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Kotzebue Waste Heat Recovery Report & Concept Design 1990
KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN Prepared for Alaska Energy Authority 701 East Tudor Road Anchorage, Alaska 99519 Prepared by Fryer/Pressley Engineering, Inc. 560 East 34th Avenue, Suite 300 Anchorage, Alaska 99503 MARCH 30, 1990 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 TABLE OF CONTENTS 1.0 EXECUTIVE SUMMARY 1 2.0 = INTRODUCTION 2 3.0 DESCRIPTION OF SITE VISIT 4 40 POWER PLANT DESCRIPTION 5 5.0 POTENTIAL WASTE HEAT USER BUILDING DESCRIPTIONS 12 6.0 RIGHT-OF-WAY/EASEMENT 43 7.0 | CONCEPT DESIGN 44 8.0 ECONOMIC DATA 81 9.0 FAILURE ANALYSIS 84 10.0 CONCLUSIONS AND RECOMMENDATIONS 94 APPENDICES 1 Calculations 2. Contact Names 3. Cost Estimates 4, Raw Data LIST OF FIGURES AND TABLES Power Plant Photographs Kotzebue Power Generation - 1989 Kotzebue Historical Power Production KEA Waste Heat Loop Fuel Displaced Hospital Fuel Use Senior Center Photographs Senior Center Fuel Use A.C. Co. Store Photographs A.C. Co. Store Fuel Oil Use KIC Apartments Photographs KIC Apartments Fuel Use Public Works Photographs Public Works Fuel Use Water Treatment Photographs Water Treatment Fuel Oil Use Elementary School Photographs Elementary School Fuel Use Middle School Photographs Middle School Fuel Use High School Photographs High School Fuel Use Armory Fuel Use Recreation Center Fuel Use Figure 1 - Legend Figure 2 - System Schematic Figure 3 - Community Plan Figure 4 - Site Plan Detail Figure 5 - Power Plant Area Site Plan Figure 6 - Power Plant Floor Plan - New Plant Figure 7 - Power Plant Floor Plan - Old Plant Figure 8 - Power Plant Cooling Schematic Figure 9 - Hospital Building Floor Plan Figure 10 - Hospital Building Boiler Schematic Figure 11 - Senior Center Floor Plan Figure 12 - Senior Center Boiler Schematic Figure 13 - A.C. Co. Store Floor Plan Page iii KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN 36-37 BSSsé 51 SSEAFRELSR MARCH 30, 1990 Figure 14- A.C. Co. Store Boiler Schematic Figure 15 - KIC Apartments Floor Plan Figure 16 - KIC Apartments Boller Schematic Figure 17 - Public Works Floor Plan Figure 18 - Public Works Boller Schematic Figure 19 - Water Treatment Building Floor Plan Figure 20 - Water Treatment Building Boiler Schematic Figure 21 - Elementary School Floor Plan Figure 22 - Elementary School Boiler Schematic Figure 23 - Middle School Floor Plan Figure 24 - Middle School Boiler Schematic Figure 25 - High School Floor Plan Figure 26 - High School Boller Schematic #1 Figure 27 - High School Boller Schematic #2 Figure 28 - Trench Section Figure 29 - Expansion Loop Details Graph 1 Graph 2 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 EXECUTIVE SUMMARY A potential for waste heat recovery exists In the community of Kotzebue. Kotzebue Is lo- cated on the northwest shore of the Baldwin Peninsula in Kotzebue Sound. The com- munity Is located 560 air miles northwest of Anchorage. The heat energy could be recovered from the diesel engine-generator sets operated by Kotzebue Electric As- sociation and circulated to user buildings in the community. Twelve possible waste heat user buildings have been Identified: the major potential users include the future hospital, the water treatment plant, and the three school buildings (the elementary, middle, and high school). It appears as if the most advantageous system will provide heat to new hospital, the A.C. Co. Store, the KIC Apartments, the Public Works building, and the Water Treatment building. A summary of the construction cost estimates along with design and SIA costs is included in the Cost Estimate Appendix. If the system is installed connecting the above mentioned buildings, the following are the estimated results: Estimated Project Cost $2,101,900 Total Fuel Oil Savings 214,200 gallons Total Annual Dollar Savings $282,700 Page 1 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 2.0 INTRODUCTION 2.1 2.2 2.3 Objective The objective of the field investigation and report is to ascertain the viability of waste heat recovery and use in the community of Kotzebue. It has been estab- lished that there is a potential source and use for the heat energy, and that the community Is interested in pursuing the matter. Methodology The approach for investigation and analysis has been as follows: 1 Pre-site visit information gathering: this has consisted of contact with the community officials, owners/operators of potential user buildings, and contact with the local utility. The site visit was coordinated with the local building owners/operators. 2. Fleld Investigation: a visit was made to the community to view the site. Photographs of the potential user buildings were taken as well as of the electrical generation buildings and equipment. Sketches were made of the equipment and piping connections. The project was discussed with local interested parties. 3. Office Analysis: additional information was collected regarding weather and historical electrical energy production. This was used in a model to predict the system performance and the amount of energy recovered. 4, Report Preparation: a draft version report was prepared for the expected audience - users and agencies with an interest. Community Description Kotzebue is a community of approximately 3600 persons located on the northwest shore of the Baldwin Peninsula in Kotzebue Sound. The community is located 560 air miles northwest of Anchorage. Most of the terrain is quite flat. Nearly continuous permafrost underlies the area. See Figure 3 in Section 7 for a partial community site plan. A detail of the area expected to be of interest is shown in Figure 4, Section 7. Page 2 2.4 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Applicable Codes and Regulations The most recently State of Alaska-adopted editions (1985 for all except as noted) of the following codes and regulations have been used in the preparation of the concept design. These are listed below: Uniform Plumbing Code (UPC - 1979) Uniform Mechanical Code (UMC) Uniform Building Code (UBC) Uniform Fire Code (UFC) National Electrical Code (NEC - 1987) National Fire Protection Association (NFPA) Codes Page 3 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 3.0 DESCRIPTION OF SITE VISIT 3.1 3.2 Field Notes Contact names are included as part of the Appendix at the end of this report. They Include both fleld contacts and contacts made by phone. Field Contacts The following people were contacted in the field or prior to the field trip: Dan Coffey, Director of Maintenance - NW Arctic School Dist. Paul Weisner, Asst. Director of Maintenance - NW Arctic School Dist. Dave Foster, Maintenance Department - NW Arctic School Dist. Craig Thompson, P.E. - Thompson Engineering Glen Pomeroy, P.E. - Mechanical Engineer for KEA Brad Reeve, General Manager - KEA Chuck Vowell, Maintenance Director Alaska Commercial Co. Ken Sturdevan, Kotzebue A.C. Co. Manager Steve Weaver, Engineer - Public Health Service Caleb Pungowiyi, Asst. City Manager Bruce Kovarik, Vice President, Operations - Manilaag Corp. Paul Hanson, Senior Center Director - Manllaaq Corp. Terry Adams, Maintenance Director - Manilaaq Corp. Frank Stein, President - KIC (Kikiktagruk Inupiat Corp.) Major Lamont, Supply Officer - Kotzebue Armory Roger Patch, State of Alaska Facilities (Armory) Page 4 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 4.0 POWER PLANT DESCRIPTION 4.1 Narrative Description The electrical utility for Kotzebue is Kotzebue Electric Association (KEA). The power plant Is located in town at the comer of Lagoon Street and 5th Avenue. The KEA properties include a number of bulldings. These include the main power plant building, an old office building (now used as a job shack), a new office building, a substation, and a small warehouse. The power plant building consists of an older plant built in the 1950’s and remodeled through 1973, and a newer portion of the plant built in 1972. Across the street from the power plant building are two one million gallon fuel oil tanks. One of the tanks is heated through the use of the plant’s waste heat recovery system. KEA uses number 2 fuel oil exclusively for the engines. The fuel in one tank is heated to maintain 20 degrees F. A second heat exchanger in the power plant building heats the fuel further as it is transferred into the building. There are six engine generator sets currently in use at the power plant. Normally, 2 or 3 sets will run at any given time. The engine generator sets are listed below: Unit #3 White-Superior, 500 KW Unit #4 White-Superior, 500 KW Unit #6 EMD 20 Cylinder, 2400 KW Unit #7 Caterpillar 3516, 1000 KW Unit #8 Solar Turbine, 900 KW Unit #9 EMD 16 Cylinder, 1700 KW Unit #10 Caterpillar 3516, 1000 KW (future) The utility has a small waste heat recovery system that is used for a number of purposes in the buildings belonging to KEA. Heat is recovered through the use of shell and tube heat exchangers that are interconnected to each other on the cold side through the waste heat recovery system. This allows the heat from run- ning engines to be used to preheat standby engines. The heat recovered by the shell and tube heat exchangers is circulated to heat the power plant, the old and the new office, and the substation. Within the building, the heat is also used for fuel oil heating in the tank and fuel oil coming into the building. Page 5 4.2 43 44 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 The utility plans to make a number of changes over the next few years. These plans include addition of Unit #10 (1000 KW Caterpillar) scheduled for 1990. The second unheated fuel oll tank will be heated after installation of some additional equipment in 1990. In 1991, It Is planned that the engine headers will be con- nected to allow common use of the remote radiators. Floor Plan and Schematics See the Figures 5 through 8 for a power plant site and building plans along with a simple schematic of the system (located in Section 7). Photographs See the attached copies of the original color photographs of the proposed plant site, Available Load Information Refer to the attached Table | indicating the monthly total power production for 1989. Table 2 shows the historical yearly power production and peak load. The Table also shows the percent increase in production over the previous year. This information Is from Kotzebue Electric Association. Figures for other years are also available. Page 6 PHOTO 1: POWER PLANT BUILDING Exterior PHOTO 2: NEW OFFICE BUILDING Exterior Page 7 PHOTO 3: POWER PLANT BUILDING Unit #9 PHOTO 4: POWER PLANT BUILDING Unit #6 Heat Exchangers Page 8 TABLE 1 KOTZEBUE POWER GENERATION 1989 PRODUCTION AVG. LOAD KWH JAN 1,859,386 720 2582 FEB 1,534,012 696 2204 MAR 1,346,042 744 1809 APR 1,302,175 720 1809 MAY 1,437,727 744 1932 JUNE 1,138,857 720 1582 JULY 1,106,447 744 1487 AUG 1,440,325 744 1936 SEP 1,289,874 720 1791 OCT 1,462,201 744 1965 NOV 1,563,699 720 2172 DEC 1,500,261 744 2016 ANNUAL 16,981,006 8760 1941 Page 9 TABLE 2 KOTZEBUE HISTORICAL POWER GENERATION a Paces CCT INCREASE FRO! ae AVG. LOAD PREV. YR. 1979 10,453,600 1193 1980 10,626,900 1213 1981 11,530,600 1316 1982 12,249,300 1398 1983 13,668,415 1560 1984 14,703,000 1678 1985 15,999,200 1826 1986 16,101,400 1838 1987 16,222,861 1852 1988 16,235,071 1853 1989 16,981,006 1938 AVERAGE 1606 Page 10 TABLE 3 KEA WASTE HEAT LOOP FUEL DISPLACED EATING HEAT EST. KEA DEGABE LOAD FUEL DISPLACED DAYS BTU/HR GALLONS PB sit 11 MAR 2520 APR 2118 MAY 391 JUNE 185 JULY 121 AUG 230 SEP 1013 OCT 1854 NOV 2277 DEC 2571 19,451 Page 11 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 5.0 POTENTIAL WASTE HEAT USER BUILDING DESCRIPTIONS 5.1 5.2 General During the site visit, buildings within a reasonable distance of the power plant, and with a significant heating load were considered. The buildings were visited and information about them gathered. The information Is presented below. Photographs accompany each building description. Plans and schematics can be found in Section 7. Kotzebue Hospital General The building proposed for connection to a waste heat recovery system is not yet built. it is currently under design and is expected to be complete at the end of 1993. Work done in this building could be accomplished in 1992. The building will be a replacement for the existing hospital located near the school buildings. The existing hospital is expected to be demolished and therefore was not considered for a waste heat connection. The new hospital is expected to be an approximately 80,000 square feet single story structure. The building is to be a steel structure on piles. The building will be used for all manners of medical treatment. The building will include areas for such tasks as dining, shop repair, and laundry. Heating Energy Use Three boilers rated at 4290 MBH output will provide heating for the entire building through terminal heating units such as finned tube and unit heaters. Domestic hot water will be produced using a heat exchanger and water from the boilers. Refer to Table 4 for the estimated yearly fuel oil use for the building. The yearly figures were provided by the design engineers for the new facility. Monthly figures were estimated based on the heating degree days for the area. Page 12 JAN FEB APR MAY JUNE JULY AUG SEP OCT NOV DEC TABLE 4 BUILDING: YEARLY FUEL USE: REDUCTION FOR DHW: oO ooooooo°oeco°coe Page 13 HOSPITAL 100, es 14174 = 2,95 309 14410 11674 9808 5987 2828 1857 3530 4691 8585 10546 11909 100,000 = % B37 SM = Cys ee = 144 m BH] a> 5.3 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Senior Center General The Senior Center building Is a wood structure with a partial basement on a slab on grade foundation. The bullding has a conditioned area of 17,000 square feet which includes a new nursing addition constructed over the last 12 months. The original building was completed and occupied in 1977. It is in good condition. Heating Energy Use Two bollers provide heating for the building. The two boilers are Identical American Standard boilers with 1115 MBH rated output. Domestic hot water is produced using a heat exchanger and water from the hydronic boilers. Refer to Table 5 for the yearly fuel oil use for the building. The figures for fuel oil use were provided by the Manilaaq Corporation. Monthly figures of fuel use are based on heating degree day calculations. Page 14 PHOTO 5: SENIOR CENTER Building Exterior PHOTO 6: SENIOR CENTER Bollers Page 15 TABLE 5 BUILDING: YEARLY FUEL USE: ‘REDUCTION FOR DHW: MONTH |HEATING DEGREE DAYS/HEATING ALLO JAN FEB APR MAY JUNE JULY AUG SEP OCT NOV DEC 2313.0 2351.5 1905.0 1600.5 977.0 461.5 303.0 576.0 765.5 1401.0 1721.0 1943.3 16,318 DOM. WATER SENIOR CENTER 21,355 0% NET HEATING [TOTAL USE USE (GALLONS) (GALLONS) 0 3027 3027 0 3077 3077 0 2493 2493 0 2094 2094 0 1279 1279 0 604 604 0 397 397 0 754 754 0 1002 1002 0 1833 1833 0 2252 2252 0 2543 2543 0 21,355| 21,355 Page 16 5.4 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Alaska Commercial Company Store (A.C. Co.) General The store Is a wood building on a pile foundation being used as a retail store. The building has a conditioned space of approximately 25,000 square feet. Comple- tion date is estimated as 1983. The building is owned by KIC (also discussed later) and is rented by the A.C. Co. Heating Energy Use The store is heated through the use of two hydronic boilers which serve terminal heating units such as finned tube and unit heaters. The boilers are rated at 261 MBH output. Table 6 shows the yearly fuel consumption as provided by Alaska commercial company and the calculated monthly fuel use. Page 17 PHOTO 7: A.C. CO. STORE Building Exterior PHOTO 8: A.C. CO. STORE Building Boilers Page 18 TABLE 6 BUILDING: A.C. CO. STORE YEARLY FUEL USE: 11,886 REDUCTION FOR DHW: 5% HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS ton USE (GALLONS) |(GALLONS) 66 1638 PES 66 1665 MAR 66 1361 APR 66 1154 MAY 66 730 JUNE 66 380 JULY 66 272 AUG 66 458 SEP 66 586 OCT 66 1018 NOV 66 1236 DEC 66 1387 792 11,886 Page 19 5.5 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 KIC Apartments General The building is a wood structure with a pile foundation with thermosiphons. The building owner Is KIC (Kikiktagruk Inupiat Corporation). The building is three stories and contains 29 apartment units for rental. The building was completed in 1977 and measures 50’ by 162’ for a total area of 24,000 square feet. The building is in good condition. Heating Energy Use The building is served by two Identical Burnham hydronic boilers each rated at 457 MBH output. Domestic hot water is produced using a fuel oil-fired water heater. Fuel oil use was provided by KIC and monthly estimates were made using degree day calculations. Page 20 PHOTO 9: KIC APARTMENTS Exterior PHOTO 10: KIC APARTMENTS Existing Boiler System Page 21 TABLE 7 BUILDING: KIC APARTMENTS YEARLY FUEL USE: 17,137 REDUCTION FOR DHW: 10% NTH | HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS|HEATING USE (GALLONS) |(GALLONS) |ALLON: PB 2331 MAR 1924 APR 1647 MAY 1080 JUNE 610 JULY 466 AUG 715 SEP 887 OCT 1466 NOV 1757 DEC 1959 17,137 Page 22 5.6 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Public Works General The building is a wood and steel structure with a slab-on-grade foundation with thermosiphons. The building was completed in approximately 1980. It includes a vehicle maintenance and parking area and office space. Total current floor area Is approximately 11,000 square feet. The building Is in good condition. Heating Energy Use The building is heated by a two fuel-oil fired boilers rated at 421 MBH each. Ter- minal heating units include finned tube, and unit heaters. Domestic hot water is produced from oil-fired water heaters. The estimates of fuel oil use are based on Information provided by personnel at City Hall. Monthly use estimates are based on degree day calculations. The estimated use follows in Table 8. Page 23 PHOTO 11: PUBLIC WORKS Exterior PHOTO 12: PUBLIC WORKS Existing Boller System Page 24 TABLE 8 BUILDING: PUBLIC WORKS YEARLY FUEL USE: 18,649 REDUCTION FOR DHW: 5% HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS dept Sie USE (GALLONS) |(GALLONS) JAN 2571 FEB 2612 MAR 2136 APR 1811 MAY 1146 JUNE 596 JULY 427 AUG 718 SEP 920 OCT 1598 NOV 1939 DEC 2176 18,649 Page 25 5.7 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Water Treatment Building General The building Is a wood and steel structure with a slab-on-grade foundation. The building was completed in approximately 1971. The building’s use is for treat- ment and circulation of the community water supply. Raw water is pumped from lakes above the community and is treated in the building through the use of a packaged floculation system manufactured by Microflo. Current water treat- ment is done on the raw water at the temperature It arrives In the building. Average flow rate is 200 GPM and the normal water temperature Is 38 to 40 de- grees F, The building size Is approximately 2400 square feet. Some possible renovations to the building have been discussed but their execution date in not known. The building Is in fair condition. Heating Energy Use The building Is heated by a one fuel-oil fired boiler rated at 1600 MBH. A shell and tube heat exchanger has been installed to allow for the boilers in the ad- Jacent Public Works building to be used to heat the building In the event of boiler failure. Terminal heating units include finned tube, and unit heaters. The water to be circulated in the buried water lines Is now being heated using a water heater. This water heater was only recently Installed (in March of 1990) partially in response to the problems encountered with the freezing of water and sewer lines at various points in the systems. The estimates of fuel oil use are based on infor- mation provided by personnel at City Hall and the water heating load was added in since water had not been heated up until very recently. It Is assumed that 200 GPM of raw water is heated 10 degrees F during 7 months of the year. The estimated use follows In Table 9. Page 26 PHOTO 13: WATER TREATMENT BUILDING Exterior PHOTO 14: WATER TREATMENT BUILDING Existing Boiler System Page 27 TABLE 9 BUILDING: WATER TREAT. BLDG. YEARLY FUEL USE : 10, a eon HTG.) REDUCTION FOR DHW: HEATING | DOM. WATER] NET HEATING | TOTAL USE DEGREE DAYS HEATING USE (GALLONS) (GALLONS) j|ALLON JAN 8717 FEB 8741 MAR 8467 APR 8281 MAY 599 JUNE 283 JULY 186 AUG 353 SEP 469 OCT 8159 NOV 8355 DEC 8491 61,100 * WATER HEATING IS ADDED TO LOAD FOR THIS BUILDING. Page 28 5.8 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Elementary School General The Elementary School building is a wood structure with a slab-on-grade founda- tion. The building was completed in approximately 1955 and remodeled in 1987. It is one story in height with a low ceiling basement. Building area is ap- proximately 23,000 square feet. The building Is in good condition. Heating Energy Use The building is heated by a two fuel-oil fired boilers rated at 1419 MBH each. Ter- minal heating units include finned tube, and unit heaters. Domestic hot water is produced from a heat exchanger and water from the hydronic boilers. The es- timates of fuel oil use are based on information provided by maintenance per- sonnel with the School District. Monthly use estimates are based on degree day calculations. The estimated use follows in Table 10. Page 29 PHOTO 15: ELEMENTARY SCHOOL Exterior PHOTO 16: ELEMENTARY SCHOOL Existing Boiler System Page 30 TABLE 10 BUILDING: ELEM. SCHOOL YEARLY FUEL USE: 16, oe REDUCTION FOR DHW: HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS ee USE (GALLONS) |(GALLONS) 0 PB 0) 3306 MAR 0 1868 APR 0) 1569 MAY 0 958 JUNE 0 452 JULY 0 297 AUG 0 565 SEP 0 751 OCT 0) 1374 NOV 0) 1687 DEC 0 1905 0 16,000 Page 31 59 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Middle School General The Middle School building is a wood structure with a pile foundation. The build- ing was completed in approximately 1964 and is currently being remodeled. It is closed for this school year but is expected to reopen for the 1990-1991 school year. It is one story in height and houses a gymnasium and classrooms. After the renovation is complete, the building is expected to be used for elementary school education and the middie school program will move to the high school building. The Middle school building is connected to the elementary school building through a corridor. After the remodeling is complete, the building will likely be referred to as the North Wing of the Elementary School. Building area is 36,000 square feet. The building is in good condition. Heating Energy Use The building is heated by a two fuel-oil fired boilers rated at 2982 MBH each. Ter- minal heating units include finned tube, and unit heaters. Domestic hot water Is currently produced from a heat exchanger and water from the hydronic boilers. The estimates of fuel oil use are based on information provided by maintenance personnel with the School District. Monthly use estimates are based on degree day calculations. The estimated use follows in Table 11. Page 32 PHOTO 17; MIDDLE SCHOOL Exterior PHOTO 18: MIDDLE SCHOOL Existing Boiler System TABLE 11 BUILDING: MIDDLE SCHOOL YEARLY FUEL USE: 25, ol REDUCTION FOR DHW: HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS/HEATING USE (GALLONS) |(GALLONS) |ALLON JAN 0 FEB 0 3603 3603 MAR 0 2919 2919 APR 0 2452 2452 MAY 0 1497 1497 JUNE 0 707 707 JULY 0 464 464 AUG 0 882 882 SEP 0 1173 1173 OCT 0 2146 2146 NOV 0 2637 2637 DEC 0) 2977 2977 0 25,000 25,000 Page 34 5.10 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 High School General The High School building is a wood structure with a pile foundation. The building was completed in approximately 1981 with an addition completed in 1984. The building contains a gymnasium, classrooms, and common areas on two floors. Building area Is 52,000 square feet. The building Is in good condition. Heating Energy Use Two separate boiler rooms exist in the building which heat separate areas of the building. The boiler room referred to as Room #1 in schematics in this report is lo- cated on the first floor and heats the 1981 original area of construction. The second boiler room is located on the second floor and heats the new 1984 addi- tion (located to the east). Boller room #1 contains two fuel-oil fired boilers rated at 684 MBH each. Terminal heating units include finned tube, and unit heaters. No domestic hot water is cur- rently produced in this boiler room. Boiler room #2 contains 3 boilers each rated at 684 MBH. Domestic hot water Is produced using two oil-fired water heaters. The estimates of fuel oil use are based on information provided by maintenance personnel with the School District. Monthly use estimates are based on degree day calculations. The estimated use follows in Table 12. Page 35 A - PHOTO 19: HIGH SCHOOL Exterior PHOTO 20: HIGH SCHOOL Exterior Page 36 PHOTO 21: HIGH SCHOOL Boiler System #1 PHOTO 22: HIGH SCHOOL Boiler System #2 Page 37 TABLE 12 BUILDING: HIGH SCHOOL YEARLY FUEL USE: 44,400 REDUCTION FOR DHW: 5% HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS/HEATING USE (GALLONS) |(GALLONS) A LLO JAN 2313.0 6120 FEB 2351.5 247 6218 MAR 1905.0 247 5084 APR 1600.5 247 4311 MAY 977.0 247 2728 JUNE 461.5 247 1419 JULY 303.0 247 1016 AUG 576.0 247 1709 SEP 765.5 247 2191 OCT 1401.0 247 3804 NOV 1721.0 247 4617 DEC 1943.3 5182 16,318 44,400 Page 38 5.11 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Armory General Tne Armory building Is a steel structure with a pile foundation. The building was completed in 1987. It Is three stories in height. Building area Is approximately 25,000 square feet. The bullding Is in new condition. Heating Energy Use The building Is heated by fuel-oil fired boilers. The estimates of fuel oil use are based on information provided by State maintenance personnel. Monthly use estimates are based on degree day calculations. The estimated use follows in Table 13. Page 39 TABLE 13 BUILDING: YEARLY FUEL USE: REDUCTION FOR DHW: ARMORY 23,612 5% HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS|HEATING USE (GALLONS) |(GALLONS) ALLO JAN FEB APR MAY JUNE JULY AUG SEP OCT NOV DEC Page 40 3255 3307 2704 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 5.12 Recreation Center General The Recreation Center building is a wood structure with a slab-on-grade founda- tion. The building was completed in 1980. It is two stories in some areas. Building area is approximately 14,000 square feet. Heating Energy Use The building is heated by fuel-oil fired boilers. The fuel oil use is estimated based on building size and use. Monthly use estimates are based on degree day cal- culations. The estimated use follows in Table 14. Page 41 TABLE 14 BUILDING: REC. CENTER YEARLY FUEL USE: 10,000 REDUCTION FOR DHW: 5% MONTH |HEATING DOM. WATER |NETHEATING |TOTAL USE DEGREE DAYS)/HEATING USE (GALLONS) (GALLONS) ALLONS JAN 2313.0 56 1378 FEB 2351.5 56 1401 MAR 1905.0 56 1145 APR 1600.5 56 971 MAY 977.0 56 614 JUNE 461.5 56 320 JULY 303.0 56 229 AUG 576.0 56 385 SEP 765.5 56 493 OCT 1401.0 56 857 NOV 1721.0 56 1040 DEC 1943.3 56 1167 16,318 667 10,000 Page 42 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 6.0 RIGHT-OF-WAY/EASEMENT 6.1 Narrative Description The Issue of right-of-ways and easements were not addressed as part of this report. Page 43 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 7.0 CONCEPT DESIGN 71 System Narrative In keeping with the previous AEA recommendations, the current concept design includes one flat plate heat exchanger at the power plant connected to a com- mon header so that heat can be recovered from any running engine. The flow will be assisted through the use of a booster pump on the engine side of the sys- tem. This was at the request of the engineers for the power plant who have indi- cated that no additional pressure drop can be added to the engine mounted pump. The pump is located out of the direct header so that in the event of failure, the heat recovery loop can be bypassed. On the primary loop, a main circulation pump will be designed for the pressure drop of the furthest connected building. In addition, an air separator, and ex- pansion tank, and a glycol make-up system is required. The pump’s design flow rate will be for the connected load at a 20 degree temperature drop. See the appendix for pump sizing for the various concepts. The piping to each of the connected buildings will be through arctic pipe buried underground to protect It from damage from passage of vehicles. Two separate arctic pipes are envisioned, one for supply to the building, and one for return to the power plant. See the attached Figure 2 for the system schematic. The pipe ls expected to be run in the roads, away from existing utilities (water and sewer) that are also buried beneath the road surface. Expansion loops will be required approximately every 300 feet of trench. The loop will jog 10 feet to the side, travel 6 feet, and then job back 10 feet to the original line of the pipe. Figure 29 shows some of the proposed construction details. Balancing valves are used at the connection to existing piping for two reasons. The first is to allow balancing of the flow to the heat exchanger; the second is to provide a means of measuring the flow rate at that point in the piping. All connections to the user buildings will be using flat plate heat exchangers. This will limit problems associated with damage of distribution piping and intercon- nection of systems. Two separate heat exchangers are proposed for the water treatment building to further isolate the waste heat distribution system from the potable water. Two separate heat exchangers are also proposed for the high school connection since there are two separate boiler systems. Page 44 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 The fluid to be used In the buried distribution system is assumed to be an inhibited glycol mixture, either ethylene or propylene glycol. From the number of problems experienced with some water-based distribution systems, use of water alone is not recommended for a heat transfer fluid. Page 45 BALANCE VALVE GATE VALVE 2-WAY CONTROL VALVE 3-WAY CONTROL VALVE CHECK VALVE STRAINER UNION CIRCULATING PUMP THERMOMETER AIR SEPARATOR LOW WATER CUTOFF FLOW ARROW PIPE DOWN PIPE UP NEW RETURN LINE NEW SUPPLY LINE EXISTING RETURN LINE EXISTING SUPPLY LINE NEW EQUIPMENT/VALVES IN THIS COLOR EXISTING EQUIPMENT/VALVES IN THIS COLOR SYSTEM SCHEMATIC USES ADDITIONAL COLORS TO DEFINE SYSTEMS SYMBOL LEGEND F|P FRYER/PRESSLEY ENGINEERING ANCHORAGE SLASIEN 50603 ate (907)561-1666 3/30/90 Page 46 %¥ 1d39DNOD E) E) e) E) G G G GS Leb a Y—=14 AYOWYY ‘IOOHOS HOIH € 1d30NOO “TOOHOS FIGGIN ‘TOOHOS Z 1d30NO9 » Gg me SLNSWLYVdV Ol SYOLS ‘09 “O'V YALN30 YOINSS a S$ Ld3ONO9 Y3LN39 934 D G Da WALSAS ONITIING WALSAS NOLLNEIMLSIO WALSAS YOLVY3NS9 QN3931 Lt Ld39NO9 WLIdSOH eB INV]d Y3MOd Pd O = jaa) x] —) S Cc Zz, je) > je 3| 4 Y Wy ea me A, NN ee —&) > me kx 3 E : g ANCHORAGE, ALASKA F|P system scHematic Page 47 7.2 7.3 74 75 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Site Plan/Routing The routing will be as shown on the attached plan (Figure 4). The concept 1 Is for connection only to the proposed Hospital building. Concept 2 also continues on and connects to the Senior Center, the A.C. Co. Store, and the KIC Apartments. Concept 3 is connection also to the Public Works and Water Treatment buildings. Concept 4 includes the three school buildings (elementary, middie, and high school) and concept 5 continues on and connects to the Armory and Recrea- tion Center. Pipe sizes and lengths for each Concept are shown in the Appendix at the end of the Raw Data section. Power Plant Plans/Schematics See the attached Figures 5 through 8 for the design concept for changes to the power plant. User Building Plan/Schematics See the attached Figures 9 through 27 for proposed changes to each of the potential user buildings. No drawings were prepared for the Armory or the Recreation Center. Arctic Pipe/Utilidor Section A cross section of the anticipated trench and arctic pipe configuration is shown in the Figure 28 and 29. Page 48 YALNJO NOWW3YOSY AYOWYY 3937109 “‘WNOO ‘TOOHOS HOIH TOOHOS FIGGIN TOOHOS “W313 ONITIING 391440 WLIdSOH SHd LNSWLV3YL YSLVM SMYOM ONNd ©O®®O®OO®OOOO® 43LN3O YOINIS @ SLN3WLUVdY O14 @ 00 ¥ @® (3YNLN4) WildSOH @) 301440 180d @ HOYNHD LSudva @ aNvisuod 0 @ 73L0H @ ‘00 ONIGVYEL NOSNYVH ‘9'N @) 3SNOHSYYM NOSNYH @ QN3951 ONITIING JWHM N3GI09 @) ASNOHSYYM VIX © LNV1d Y3MO0d V3¥ © SLNAWLYVdY DIX © WN3SNW VNYN @) vv © SaNnuly vxSVWW @® JOuLYd uly TID © uly WWW @© NOLLVIAY JO ‘Ald 10d @ (907)561-1666 cb S oe fx 5] S co IF, ale | 23 ~—|4 Eln 42 = a2 S}a ONS aby |e 25 = a a | Bes CITY OF KOTZEBUE ANCHORAGR ALASKA 90603 FIP Page 49 YALN39 NOWLWSY9SY AYOWYY ‘OOHOS HOIH TOOHOS FIGGIN ‘TOOHOS “W314 ‘O01d LNSWLVSYL YALVM SNOWdIYOSSG ANM3dld YO4 LX3L 33S <> NMOHS 3YY SONIGTINE TV LON :4LON OOOO O® SMYOM INENd @® YALN3O YOINIS © SLNIWLYYdY OM @ WYOLS (09 ‘0 V © (3YNLN4) WLIdSOH @ INV1d Y3M0d Y3Y © ON3I9F1 ONIGING CITY OF KOTZEBUE SITE PLAN DETAIL F|P FRYER/PRESSLEY ENGINEERING (907)561-1666 660 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 Page 50 NEW OFFICE BLDG: OLD OFFICE BLDG. RADIATORS FUEL STORAGE 5) / (150,000 GALLONS) SWITCH GEAR 2° TRANSFORMERS BOILERS LAGOON ST. NEW SECTION OLD SECTION KEA POWER PLANT STH AVENUE KEA WAREHOUSE FUEL STORAGE a 1,000,000 1,000,000 GALLONS GALLONS POWER PLANT ona FIP area site Plan CKD BY. VW . FRYER/PRESSLEY ENGINEERING |p ANCHORAGE ALASKA 69603" ~”” (p07)501-1008 3/30/90 Page 51 LN3WdINDA MAN YO4 NOIWLV9O1 ii LNV1d M3N iil IK L YOLVIGVY c# LINN @) YOLVIGVY Ol# LINN GD MOLVIGVY Z# LINN @ YSONVHOXS LV3H ANVL Tans © | @® =——o) l= ANINVZZ3N YOLVIGVY c# t NN @ YJONVHOXZ LVIH T3N4 ININOON! @ USONVHOXS LV3H SVD OWLS OF LINN ©) YSONVHOX] LV3H SVD MOVLS 6F I g9 ® V9 SYJONVHOX] LV3H OF L YNVL AVG O# 1 nn © NN ® nn © YSONVHOX] LV3H YALVM ALIO GSNOGNVEY @) YNVL AVG 6# 1 MJONVHOXS LVSH 6H L nn © Nn ® YV3II-HOLIMS © YOLVIGVY S# 1 YOLVIGVY 6# L nn © nn © Page 52 (907)561-1666 POWER PLANT FLOOR PLAN NEW PLANT ANCHORAGE, ALASKA 99503 560 EAST 34th . FRYER/ PRESSLEY ENGINEERING FIP i PLANT UNIT #4 RADIATOR UNIT #4 HEAT EXCHANGER UNIT #3 HEAT EXCHANGER UNIT #3 RADIATOR | OFFICE NEW NG UNIT #8 \ (SEE SHEET 6) UNIT #7 by a 1 UNIT #10 | ' (FUTURE) ! L =a | POWER PLANT FLOOR PLAN FIP. op pant . ERYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 99503 (907)561-1666 3/30/90 Page 53 SNOLLVAONSY G3L03dX3 NO G3SVE SI DUVWSHOS ONidld LVHL JLON no m 4 Q nm ae m wD > a Sa a /ANIONG 1 1 ' 1 ' 1 ' ' ' ' | ' ‘ 1 ' i ' ' ' ' ' ' ' ' ! ! ' ' ' ' ‘ ' 1 ! ‘ ' ' ' 1 ' ' ' 1 ' 1 1 1 ' 1 ! 1 ' + ONIdid .8 ONILSIX4 INidid 13S YOLVYSNAD WOIIdAL WOIdAL ‘SL3S YOLVYANID YSHLO VENUE SUITE 300 99603 (907)561-1666 ANCHORAGE, ALASKA YOLOW dH SI ONIZIS “dHd OL dWNd 404 SYOLVIGVY SLONSY ONLLSIX3 +g _ “QW3H 02 Ce = @ Wd 000Z rf 80M M3N COOLING SCHEMATIC POWER PLANT 7 FRYER/ PRESSLEY ENGINEERING FIP ANVL NOISNVdX3 Y3dGqv1E E _ Page 54 SPACE FOR FUTURE EQUIPMENT 3 33 ao a ran as a. = HOSPITAL BUILDING FIP Froor pian . ERYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 99503 (907)561-1666 Page 55 ddild OWOYV OL ddild DILOYV WOU “NOLLVNYOINI NOISSG LN3YYNO NO G3SV4 SI OLLVWSHOS = -3LON dWNd 109A19 OLNV ANVL TOOATS tt. dul NINO SYNYL NOISNVdX3 “af a yagavia x31dna > SYOLVYVdaS uly X31dNG \ au nua aaaas TIGVINVA HLIM dNNd 3NOZ SINOYGAH GaLNNOW 3SV8 \VENUE SUITE 300 99603 (907)561—-1666 ANCHORAGE, ALASKA O S = [x] & SZ -— 3 oe |e - Sl x |e & |e Ooln Z2=|In CO =</h] 4 S =e a Ong eld |= EK x} a. Pp Nn O° 2 8lz 2 — <x = ld ae oS n ac Ld — S co 660 EAST 34th H EP Page 56 5———- TO ARCTIC PIPE MECHANICAL ROOM WITH SPACE FOR FUTURE EQUIPMENT. SENIOR CITIZENS’ CULTURAL CENTER FIP Fioor pian . FRYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 99603 (907)561-1666 Page 57 OLONV OL ddld OILOYVY WO YSl4IGINNH 431108 ONILSIXS Y4d1108 ONILSIX3 i SHO,¢ + YHO Lf + IU Ler yea 1109 , SHI WOON NV4 AVM-& d001 +4 ¥3LN39 aad AVM -¢ LW3H3Yd MH OL SENIOR CENTER BOILER SCHEMATIC ANCHORAGE, ALASKA 99603 . FRYER/PRESSLEY ENGINEERING FP Page 58 MEZZANINE ABOVE SPACE FOR FUTURE EQUIPMENT UP ARCTIC PIPE RUN J BUILDING MECHANICAL ROOM (FIRST FLOOR) A.C. CO. STORE FIP floor plan . ERYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 99503 (907)561-1666 I Page 59 MYOM MIN Jdild DILOYV WON ‘ adsiog ONILSIXI YJ 1108 ONILSIX3 YAONVHOXA LV3H ANVL NOISNVdX3 etal SANOZ OL [ S4INOZ OL YH 2 A.C. CO. STORE BOILER SCHEMATIC FIP FRYER/PRESSLEY ENGINEERING 560 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 Page 60 SPACE FOR FUTURE EQUIPMENT ARCTIC PIPE RUN UNDER BUILDING a MECHANICAL ROOM (FIRST FLOOR) DYN BY: KIC APARTMENTS i FIP fvoor Pian CKD BY. . FRYER/PRESSLEY ENGINEERING [oar ANCHORAGE, ALASKA 99603 (907)861-1686 3/30/90 Page 61 YOM MIN _»S et ha a a ek a i a a a a a a es a Ta a ai ad i | YSONVHOXA LV3H ud1108 dd 1108 OWLONV OL ONILSIX4 ONILSIX3 \ ' ' \ ! ' ddid g OWOYV WO ! 1 I ' ' ' ' ' ' SANOZ OLS VENUE SUITE 300 KIC APARTMENTS BOILER SCHEMATIC ANCHORAGE, ALASKA 99503 660 EAST 34th S3NOZ OL INH }>a——§_ .c/ 1-2 YNWL C-d NOISNVdX3 a C) 4 Fe > Ss me [2] fz] Z 0 a [J p> fx] al n n eal ~e A, Ss oe fz] my ~ fx, FP Page 62 SPACE FOR FUTURE EQUIPMENT 2ND FLOOR ABOVE | ee ROOM TO/FROM ARCTIC PIPE PUBLIC WORKS n FIP foor pian eT . FRYER/PRESSLEY ENGINEERING iam ANCHORAGE, ALASKA 99603 (907)561-1666 3/30/90 Page 63 Adld OILOYV OL 1 ' 1 t 1 MYOM MIN Adid DLO WON 431108 Y31108 ONILSIXI ONILSIX3 ' ' | ! 1 ' ' ' ' ' ' ' ! 1 \——_—___ ' ' 1 ' ! 1 ' ' 1 1 ' 1 1 1 YSONVHOXZ LV3H SANOZ OL ANVL NOISNVdX3 tb) S ~~ I fx] S co a ca) > je — WY WY ea m A, ~ = ~ ey z F é g PUBLIC WORKS BOILER SCHEMATIC ANCHORAGE, ALASKA F|P SANOZ OL Page 64 TO/FROM ARCTIC PIPE EXISTING BOILER ROOM LIMITED SPACE FOR FUTURE EQUIPMENT 4 EXISTING VATER TREATHEXT PLA RAW WATER LINE ENTRANCE WATER TREATMENT BUILDING FIP Fvoor pan . ERYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 99603 (907)561-1666 Page 65 Ny BALL VALVE (TYP) 2 °, WATER TREATMENT BUILDING EP BOILER SCHEMATIC FRYER/PRESSLEY ENGINEERING 660 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 (907)561-1666 Page 66 SPACE FOR FUTURE EQUIPMENT MECHANICAL ROOM IN BASEMENT———_| PIPE RUN CONCEALED IN CEILING SPACE ELEMENTARY SCHOOL F|P Foor Plan . FRYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 996503 (907)561-1666 Page 67 c-4€ 1-8 YyF1108 Yyd108 ONILSIXS ONILSIX3 Al YOM MIN NOISNVdX3 F r 7 it Bt ss 4S3INOZ OL wu \ 1 a ! Y 1 l-a “y 8! fs ! QO .y | [x] 1 ' —t— suo wt S 1 O oO i oO | USONVHOXS ' Gi 1W3H ! ig 1 @ QD | > 3 \ 3 ' ly Fy & ' 1 | x ! S o|tni 1 i a5 rak Sy ' vor AV, ' nn Ss ~e 3 ' 1 > wi ! Ha | S|SE ' | 1 =o oe i ' | 1 = 3 ! Natl | G | Sag = 4) o§a \ Zo 22 | WY S| ee A aC ' mS mS 1 Le) fx, $3 S4JNOZ OL : 3 L. 0. ' = aD t e A>ANVL \ | | © i 1 = \ ' 1 c YSONVHOXS LVSH , SALVE LOR OLSANOG OS aie Wile elie aieieie ln Page 68 aon LOCATION FOR NEW EQUIPMENT Ta Hint PIPING RUN var] UNDER BLDG. BOILER ROOM DWN BY: MIDDLE SCHOOL nN FIP ftoor pian a . FRYER/PRESSLEY ENGINEERING [y— ANCHORAGE, ALASKA 99603 (907)561-1666 Page 69 DWN BY: MIDDLE SCHOOL n FIP soer scHematic CHO, BF . FRYER/PRESSLEY ENGINEERING one ANCHORAGE, ALASKA 99603 (907)561-1666 3/30/90 Page 70 [ | MECHANICAL ROOM #1 (1ST FLOOR) | [| SPACE FOR FUTURE EQUIPMENT — MECHANICAL ROOM #2 | (2ND FLOOR) PIPING UP TO BOILER ROOMS PIPING RUN UNDER BUILDING (PILE FOUNDATION) | b--—-4 | | PY | | © ! 75 + HIGH SCHOOL FIP Foor Pian . FRYER/PRESSLEY ENGINEERING 660 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 (907)561-1666 Page 71 eS eS SS ee 7 Adld OILOYV OL MYOM MAN——™ JAdid DULOYW WON c-€ d31108 Yd1108 YSONVHOXA LV3H ONILSIX3 ONILSIX3 SHOE SHO,£ ! a: YHO Vf 4S3ANOZ OL (907)561-1666 SANOZ OL = ANVL NOISNWdX4 oO Ss [a ea & S Oo ZB E] > J | WY op) & oe Ou, Sy = me E, BOILER SCHEMATIC #1 660 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 HIGH SCHOOL FIP Page 72 AVM \ NOISN ays108 ONILSIXI yd1108 ONILSIXS SHO. t y31108 ONILSIX4 T YH r SHO,.7 YHO Wt <- E ANVL WdX4 Uh ¢ OL SHO wy —- HOR+4 ddld SILOYV OL ddid ILIV WON S3NOZ OL ANCHORAGE, ALASKA HIGH SCHOOL BOILER SCHEMATIC #2 f FRYER/ PRESSLEY ENGINEERING FIP Page 73 MARKER TAPE ROADWAY SURFACE: CONTINUOUS OVER PIPING BACKFILL W/ EXCAVATED MATERIAL COMPACT TO 90% 4 ‘o SAND BEDDING ——re COMPACT TO 95% RIGID INSULATION z = ” BACKFILL, COMPACT TO 95% oe eT KOTZEBUE FP trencu section DWN BY: OTK © 860 EAST 34th AVENUE SUITE 300 ANCHORAGE, ALASKA 99603 (907)561—1666 Page 74 FRYER/PRESSLEY ENGINEERING CKD BY: VJ DATE: 3/30/30 SHOULDER ¢ ROAD INSULATION 8] ROADWAY SURFACE HEATING PIPES KEKE vaowvenr RRC SECTION HEATING PIPES STEEL PIPE/ CULVERT SUPPORT RIGID INSULATION SECTION B-B EMBANKMENT \ SECTION A—A KOTZEBUE F|P Expansion Loop DETAILS FRYER/PRESSLEY ENGINEERING ANCHORAGE, ALASKA 60603" ” (907)s01-1000 3/30/90 Page 75 7.6 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Outline Specifications The outline specifications for the major components of the system are shown below. 15010 GENERAL CONDITIONS The system shall be balanced by the Contractor to the flow specified in the construction documents. 15050 BASIC MATERIALS AND METHODS Valves: Valves for Isolation use shall be gate type rated for 150 psig. Piping: Piping inside buildings shall be type "L" copper or steel schedule 40 with dielectric unions at connection points of dissimilar metals. 15120 ARCTIC PIPE Arctic Pipe: Carrier pipe shall be schedule 40 steel. Insulation shall be foamed polyurethane with no voids. Thickness of insulation to be mini- mum of 2 Inches. Jacket pipe shall be steel or high density polyethylene. Arctic pipe system shall include kits or fittings for take-off connections to main loop that provide water-tight seal. 15250 MECHANICAL INSULATION Piping insulation: Pipe insulation shall be fiberglas with an all-service Jacket. Minimum insulation thickness shall be 1-1/2 inches. 15750 HEAT TRANSFER Heat Exchangers: Heat exchangers shall be plate and frame type with minimum 20 gage stainless steel plates, painted steel frame with head and end support, top carrying bar, and bottom guiding bar. Ports shall be international pipe thread. Capacity shall be as specified. Accept- able manufacturers are Bell & Gossett, APV, Tranter, and Alfa Laval. Page 76 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Circulation Pumps: The primary loop circulation pump shall be a base- mounted centrifugal pump. All pumps shall be compatible with a glycol heating fluid. 18900 CONTROLS Sequence of Operation: All of the pumps shall be manually switched. 16010- GENERAL This Section of the Division 16 Specifications will include the following sub- headings with appropriate explanations of the requirements covered in each. GENERAL AND SPECIAL CONDITIONS Refers the Contractor to the Project Specifications’ General and Special Conditions. DRAWINGS Explains the nature of the Drawings and how the information depicted on the Drawings should be used and interpreted when viewed in the context of the entire set of Contract Documents. DEFINITIONS Defines some of the major terms used in writing the Specifications. SUBMITTALS AND APPROVALS Defines the acceptable information considered to constitute the material submittals required for verifying the actual equipment and materials proposed for use in the Project's electrical systems. Page 77 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 PRODUCT DELIVERY, STORAGE AND HANDLING Directs caution In the storage and handling of materials to ameliorate their possible damage prior to their installation. JOB CONDITIONS Advises the Contractor to visit the site to acquaint himself with the actual conditions at this Project's location. PRODUCTS Establishes general criteria and standards of quality for the Project which apply to all of the materials proposed for the Project. This sub-section also requires all electrical materials to be labeled for their intended use and environment by UL. CLEANING The Contractor Is required to clean all surfaces of equipment and remove debris and unused materials in this sub-section. 16020- WORK INCLUDED This area of the Division 16 Specification lays out the generalized descrip- tions of the electrical systems and work required in this Project. It also covers which area of the Specifications will define the requirements for equipment or installations which must be coordinated with other building trades. 16021- WORK NOT INCLUDED This Section deals with those items which will definitely be provided within other areas of the Project's various disciplines. An example of such an item would be the motors provided on a fan unit (obviously specified in Division 15) which is specified complete with a motor starter, disconnect or other accessories normally found in Division 16. Page 78 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 16032- MANUALS AND AS-BUILT DRAWINGS Sub-paragraphs describing the required contents of the Operation and Maintenance Manuals, defining the periods of instruction for the Owner's designated personnel and the updating of information necessary to prepare record drawings of this Project’s final configuration are con- tained in this Section. 16111- CONDUIT All types of raceways and their associated appurtenances will be covered in this Section of Division 16. Galvanized rigid steel conduit, PVC-coated galvanized rigid steel conduit, intermediate metallic con- duit, electrical metallic tubing, flexible metal conduit and liquid-tight flexible conduit will be specified. Fittings, couplings, grounding and where each type of raceway may be used will be specified. 16120- WIRES AND CABLES Bullding wires and cables for the distribution, feeders and branch circuits required for this Project are defined in this Section. This Section typically covers only wire with voltage ratings below 600 V. 16131- PULL BOXES AND JUNCTION BOXES The various types of pull boxes and Junction boxes which will be allowed and/or required for installing the systems defined within Division 16 are specified In this Section. 16147- DEVICE PLATES AND COVERS Surface mounted boxes shall be galvanized steel plates. Weatherproof Installations will have gasketed metal plates. Page 79 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 16155- MOTOR STARTERS This Section will specify the motor contactors and controllers required by mechanical equipment. All controllers will be specified to have integral thermal overloads for motor overload protection. Combination starters utilizing circuit breakers or motor circuit protectors and that are UL listed for the application, will be acceptable. Combination starters utilizing fuses will not be allowed. 16161- GROUNDING This Section expands on the National Electrical Code requirements. 16164- BRANCH CIRCUIT PANELBOARDS Branch circuit breakers required to connect new equipment to existing panelboards will be specified in this Section. All circuit breakers will be bolt-on molded case circuit breakers of the rating and configuration necessary to serve general branch circuits and other defined loads. 16170- MOTOR AND CIRCUIT DISCONNECTS Unfused switches will be specified. Disconnects for motor applications will be required to be horsepower rated. Other disconnects will be specified to have ratings as necessary for the application. Enclosures will be NEMA 1 except where otherwise required. 16190- SUPPORTING DEVICES This Section will contain the requirements for hardware, anchors and fas- teners used to support raceways, equipment and any other electrical apparatus. Page 80 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 8.0 ECONOMIC DATA 8.1 8.2 Current Fuel Oil Costs Fuel oil Is delivered by Pacific Alaska Fuel (a.k.a. Arctic Lighterage) in Kotzebue. All of the buildings proposed for connection to the waste heat recovery system in this report buy their fuel from this company. This includes the proposed new hospital. The fuel oil supply company’s current rates are as follows for each delivery: Gallons Cost/galion 0-84 $1.60 85-199 $1.52 200-399 $1.46 400-799 $1.42 800-3299 $1.40 3300-4999 $1.38 5000 + $1.36 Displaced Costs Due to Heat Recovery The calculations that model the waste heat system are shown in the Appendix at the end of this report. These calculations essentially make comparisons of the waste heat available to the waste heat demand of the connected buildings. These comparisons are made for each hour of an average day of each month of the year. Since it may not be economically feasible to connect all of the potential build- Ings, the calculations were made in a logical order of building connections, that ls, the nearest bullding was modeled as being connected first. In this proposed order, connection starts at the site of the proposed Hospital and ends at the Recreation Center. Page 81 8.3 8.4 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 The results of the calculations based on the most recent fuel oil costs were as fol- lows: CONCEPT GALLONS SSAVINGS 1 100,000 $132,000 2 147,300 $194 A400 3 214,200 $282,700 4 255,052 $336,700 5 263,711 $348,100 Summary Cost Estimate The assumptions for the cost estimate was that bidding would take place in April of 1991. Prevailing local wages as defined by the Department of Labor were used. The cost estimate is presented with costs identified for the total project, but broken out separately to show the component costs for the work at the power plant, for the arctic pipe, and for each of the connected buildings. Since there can be much more energy demand than is available with the con- nected buildings, the cost estimate is organized in an progressive alternate form. Energy Authority SIA (Supervision, Inspection, and Administration) and design costs are included in the figures shown below. CONCEPT = COST $840,100 $1,502,600 $2,101,900 $3,456,100 $3,746,900 ahwnd— Estimated Component Life and Maintenance Costs The following estimates of maintenance cost were made based on the in- cremental cost of technician who Is already on-site. Assumptions were made for each of the pieces of equipment regarding frequency of inspection and repair. The total yearly maintenance cost will depend on the scope of installation. The costs for all buildings connected is shown. Page 82 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 tem Life (yrs) Maint, Cost ($/YD Heat Exchangers 20 $126 (each, 14 total Circulation pumps 15 $400 (each, 2 total) Arctic Pipe 15 $5000 (total) Interior piping 15 $70 (each location, 13 total) Interior valves 15 $140 (each location, 13 total) Expansion Tank 16 $70 (each, 2 total) Air Separator 15 $35 (each, 2 total) Glycol 15 $500 (total) TOTAL (base bid) $11,000/year Operating costs for electrical energy use are estimated in the appendix. For the two pumps at the power plant the electrical energy costs at $0.190/KWH result in costs of $20,000 for Concept 1 up to $85,000 for Concept 5. Although it was not Incorporated as part of this concept stage of design, the cost of electrical energy is such that multiple speed pumps or even variable frequency drives will be economically feasible. These issues can be addressed in subsequent design stages. Page 83 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 9.0 FAILURE ANALYSIS 91 General The purpose of this section is to analyze the reliability of the various components of the proposed waste heat recovery system. The analysis of the system will help guide the direction of the design to avoid systems with increased failure rates and repair costs and reduced waste heat recovery effectiveness. 9.2 Identification of Major Components The following components are those whose failure Is likely In the normal course of operation and whose failure could affect the operation of the generator or waste heat recovery systems. A brief description of the component follows the identification. Circulation pump(s): This is the pump (centrifugal) that will be used to cir- culate fluid from the heat exchanger in the power plant to the user buildings through the arctic pipe. This discussion also applies to booster pumps (in-line type) that can be used in the user buildings to help overcome the additional pressure drop of the waste heat recovery system heat exchanger. A pump may also be used on the generator side of the system to help overcome the added pressure drop of the heat exchanger or the case where hydronic coils have been added to an all air system. Jacket Water Heat Exchanger: This component is the device used to transfer heat from one liquid to another. In the design presented here, it Is a flat plate, or plate and frame type heat exchanger. The device consists of vertical plates separated by gaskets with the fluid of one system flowing in alternate plates heating (or cooling) the other fluid. There are no moving parts during operation. Stack Gas Heat Exchanger: This is a device similar in concept to the jacket water heat exchanger with the exception that the fluids being considered include both a liquid (the waste heat recovery transfer medium) and a gas - the exhaust gases from the engine. Although there are no moving parts, the heat exchanger surface Is subject to very high temperatures from the exhaust gases (to 1400 degrees F). Radiator(s): These devices are part of the generation system rather than the waste heat recovery portion. They are used to provide cooling for the engines by transferring heat from the engine coolant to the atmosphere. In conjunction Page 84 9.3 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 with the waste heat recovery system, they would be used only when cooling Is required beyond the cooling that has occurred through the use of waste heat by the recovery system. Control Valve(s): Control valves are used to maintain a setpoint tem- perature at a specific location in a piping system. In the case of the generation system, they often are the self-contained type as manufactured by Amot. The valve operator movement is based on the expansion of wax in the valve case. Altematives are an electrically operated valve to serve the same function. Exterior piping (arctic pipe): The arctic pipe is a pipe-within-a-pipe system used for transferring fluid between locations. The center pipe, or carrier pipe Is used for fluid transfer. The carrier pipe is insulated to reduce heat transfer. Outside the insulation Is a second pipe called the jacket. This is used to protect the insulation. Interior piping/valves: This portion of the system is found at the power plant or at the user buildings. Its purpose is to transfer and control the fluid to the com- ponents of the system. Failure Mode and Impact For each of the components identified above, the likely mode or modes of failure is discussed. These failure modes have been surmised based on conversations with equipment manufac- turers and based on engineering experience and Judgment. In addition, the Impact of failure on the generation and the waste heat recovery system Is gaged as is the environmental effects. Recommended immediate actions by the system caretaker are also noted. Circulation pump(s) Failure Mode: The pump assembly can fail by the failure of its in- dividual components. These include shaft seals, shaft bearings, motor, impeller, or casing. Impeller or casing failure is not expected to occur before the life of the com- ponent has been reached. This life is expected to be 15 years. Generator Operational Impact: Since failure of a booster pump used on the gener- ator side of the system could result in a high-temperature shut-down of the engine, its use Is not recommended. The likely reason for addition of a booster pump is to over- come additional pressure drop imposed by the system by new heat recovery equip- Page 85 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 ment. To avoid the need for the pump, the system should be designed to keep addi- tional pressure drop below the maximum rated pressure drop of the engine mounted pump. Waste Heat System Operational Impact: Where only a single circulation pump has been installed for heat transfer services, its failure could result in complete suspension of heat recovery. Shaft seal and shaft bearing failures in their early stages would have little effect on operation but could eventually reduce heat recovery to zero after complete failure. When duplex pumps have been installed, the heat recovery will be affected only until the standby pump can be put Into service which can occur minutes after the failure is noted. Environmental Impact: Minor - a shaft seal failure could result in a slow fluid leak that could reach the ground outside. Required Immediate Actions: If no significant loss of fluid has occurred (due to shaft seal failure), replacement of the pump will restore the system to service. The pump should be Isolated with the valves on either side of the pump, fluid checked and proper fluid level restored as needed, and the back-up pump (if installed) started. Jacket Water Heat Exchanger Fallure Mode: Since there are no moving parts, the failure of this component can occur from failure of the gaskets, or failure on the frame or plates. Since the plates are generally of stainless steel, failure is unlikely during the rated life of the equipment - or approximately 20 years. The frame is also unlikely to fail during the 20 year life. The only probable failure during the life would be the gaskets, probably exhibited as a slow leak that worsens with time. Generator Operational Impact: If the gaskets failed serving the generator cooling system fluid, enough fluid could leak out to cause a low water shut-down of the engine. Waste Heat System Operational Impact: Similar to the scenarios above, if fluid from the waste heat system were to leak from failed gaskets, the system could be in- capacitated. Page 86 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Environmental Impact: A mdjor loss of the fiuid, most likely an ethylene glycol mix- ture could have some environmental impacts. Ethylene glycol Is toxic. The problem could be reduced by using propylene glycol which is potable. The problem that often results when using propylene glycol is failure of operating or maintenance personnel to use compatible glycol for system make up. Required Immediate Actions: If an engine side gasket has failed, the heat ex- changer should be bypassed and manual shut-off valves used on the leaking side. If the leak occurs on the waste heat side, isolation valves should be closed and the circulation pump shut off. Stack Gas Heat Exchanger Fallure Mode: Three mechanisms can lead to this component failure. The first is through operational wear. This wear is caused by the passage of hot exhaust gases over the heat exchanger surface. The failure through this mechanism determines the life of the equipment which Is approximately 5 years. Two other forms of failure can occur: the first Is through thermal shock by passage of relatively cold fluid into the exchanger which has been heated to the exhaust gas temperature. Sudden contraction will destroy the heat exchanger. The second type of failure could occur if the heat exchanger is kept at too low of a temperature allowing sulfuric and hydrochloric acids to form from the exhaust gases. Resulting rapid corrosion would result in the heat exchanger failure. Generator Operational Impact: If the heat exchanger is located away from the generator, its failure would probably not release glycol onto the engines surface. Since the flow path of the exhaust gases would not be any more restricted after failure, no significant backpressure is expected to develop. If the stack gas heat exchanger is used to heat fluid after passing through the main jacket water heat exchanger, no loss of en- gine coolant will occur. However, to avoid pipe contamination, the generator should be shut down. If available or designed, a bypass device that allows exhaust gases to fol- low a path away from the heat exchanger would allow generator operation with a damaged or missing heat exchanger. Waste Heat System Operational Impact: The waste heat system would be disabled by a sudden stack gas heat exchanger failure. Environmental Impact: The loss of fluid to the environment could represent a problem as outlined in previous discussions. Page 87 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Required Immediate Actions: After failure of the stack gas heat exchanger, the exchanger should be isolated with valves and a bypass mechanism used for the stack gases. Fluid should be added to make up for losses, and lost fluid collected where pos- sible. Radiator(s) Failure Mode: The main component of the radiators is the heat exchanger for cooling of the liquid. The heat exchanger Is expected to last the life of the radiator or 15 years. The other modes of failure are similar to for circulation pumps: shaft bearings or motors, or controls. The controls in this case are assumed to be variable speed controls for the fan motor. Generator Operational Impact: Failure through leakage would drain the fluid and cause a low water shutdown of the generator. Failure of the fan-related hardware would result in insufficient cooling and a high-temperature shut down. Waste Heat System Operational Impact: There would be no effect on the waste heat system until generator shut down. At that time of course, no more heat would be avail- able for recovery. Environmental Impact: The only environmental impact would be if a leakage failure occurred which Is not the highest probability failure. Required Immediate Actions: The radiator should be Isolated and an alternate radiator used for cooling until repairs can be made. Control Vaive(s) Failure Mode: The valve casing is expected to last the life of the valve or 20 years. The most likely failure before the life is reached is that of leaking seals or seats, or failure of the operating mechanism. The seal or seat failure will normally result in a low-loss leak of fluid until repaired. The control mechanisms that can be used in this instance include Amot type operators which use the expansion characteristics of wax to operate the valve or electric motor driven operators. Although Amot-type operators fail less fre- quently than electric motor operators, they have the disadvantages of less control (which means less heat recovery) and do not indicate current control position. Page 88 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Generator Operational Impact: Failure of the operators will normally result in loss of control. Often time these fallures can occur at a mixing condition which may not im- mediately cause a system failure. The extreme cases would result In overheating. Waste Heat System Operational Impact: As discussed above, a failure in a mixing mode may not cause complete failure, but it is possible. Environmental Impact: Minor - only small leaks normally develop through seal and seat failures. Required Immediate Actions: The valve should be Isolated as soon as the seat or seal failure is discovered. If the failure is an electric operator, the valve could be manually positioned to an acceptable position until the operator can be replaced. When an Amot-type valve Is used, manual bypass valves can be used. Exterior piping (arctic pipe) Failure Mode: The only failure mode likely to interfere with the system operation would be a fluid leak at a joint. Generator Operational Impact: None. Waste Heat System Operational Impact: A significant leak would shut down the sys- tem. Environmental Impact: The leaking fluid could drain the entire piping system. Required Immediate Actions: The pump would be turned off, the system drained as much as possible, and the leaking line isolated as close to the leak as possible. Interior piping/valves Failure Mode: Interior piping Joints will normally last the length of the pipe life - about 20 years - unless physically damaged. The valves may suffer the same failures as men- tioned above for control valves. Generator Operational Impact: A fluid leak would generally be small but it is pos- sible that enough fluid would leak until a low water shut down occurred. Waste Heat System Operational Impact: Same as for Generation system effect. Page 89 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Environmental Impact: Minor. Required Immediate Actions: Isolate the leaking valve, shut off pump if fluid loss is significant. 9.4 Fallure Frequency and Cost Frequencies of failure have been estimated based on conversations with manufacturers and on engineering judgment. Assumptions made regarding the repair include: On-site operator's skill are that of a “caretaker.” Skilled preventive maintenance is performed 3 times yearly. A one day weather delay is included for all winter repair trips. Travel to site for repair is via jet, and then charter. Skilled mechanics are mobilized from Anchorage, Fairbanks, or Juneau as ap- propriate. Costs are based on $43/hour labor costs. Travel time is 12 hours round trip. Travel cost is $600 round trip. Subsistence costs are $100 per day. QRwONn-> 2 OND Circulation pump(s) Most common failure: Shaft seal, shaft bearings, or motor. Frequency of Occurrence: 0.1 per year Repair Cost: $1900/occurrence Estimate of Down Time: 2 days after discovery Effects of System Life on Frequency: Increase in probability only. Page 90 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Jacket Water Heat Exchanger Most common failure: Gasket failure. Frequency of Occurrence: 0.1 per year Repair Cost: $1900/occurrence Estimate of Down Time: 9 days Effects of System Life on Frequency: Increasing probability. Stack Gas Heat Exchanger Most common failure: Operator error - damage to heat exchanger Frequency of Occurrence: _1 per year Repair Cost: $6600/occurrence Estimate of Down Time: 30 days Effects of System Life on Frequency: No effect due to frequent expected replacement Radiator(s) Most common failure: Motor failure Frequency of Occurrence: 0.1 per year Repair Cost: $1800/occurrence Estimate of Down Time: 5 days Effects of System Life on Frequency: Increased probability. Page 91 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Control Valve(s) Most common failure: Electric operator (seal for Amot valve) Frequency of Occurence: 0.33/year (0.1 for Amot valve) Repair Cost: $1800/occurrence Estimate of Down Time: 3 days Effects of System Life on Frequency: Increasing likelihood due to wear Exterior piping (arctic pipe) Most common failure: Accidental damage Frequency of Occurrence: 0.1 per year Repair Cost: $1800/occurrence Estimate of Down Time: 21 days Effects of System Life on Frequency: None Interior piping/valves Most common failure: Valve seat/seal failure Frequency of Occurrence: 0.25 per year Repair Cost: $1800/occurrence Estimate of Down Time: 2 days Effects of System Life on Frequency: Increased likelinood due to wear Page 92 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 9.5 Design Decisions Impact on current concept design from the above failure analysis includes the recommenda- tion that stack gas heat exchangers not be used. The engineers responsible for the power plant systems are reluctant to put the existing stack gas heat exchangers back into service. There is not a demonstrated record of dependable service for this equipment. This recommendation is not to use stack gas heat exchangers Is also due to the sensitivity of the equipment to operator error and the delay that could be encountered in returning the system to service. Other recom- mendations include design of duplex pumps so that damaged pumps will not halt service for any length of time. This type of approach can also be extended to spare parts stock so that some failures may be attended to during the preventive maintenance visits to reduce costs. To avoid compromising the reliability of the generation system, booster pumps of the generator side should be avoided. A way to avoid the need for the pumps Is to design the heat ex- changer and piping system to be as low as possible and to be less than the maximum recom- mended external pressure drop as listed by the engine manufacturer. Although the failure rate of the electric motor operators on control valves is higher than for self- contained Amot-type valves, the additional control and heat recovery may provide incentive for their use. To keep an increased level of reliability of building heating systems, it is also recommended that any building connected the waste heat recovery system use a heat exchanger. In the event of @ distribution piping failure, the building’s heating system would continue to operate without in- terruption. Page 93 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 10.0 CONCLUSIONS AND RECOMMENDATIONS The final economics will be completed by the Alaska Energy Authority so a definitive conclusion is not made at this tine concerming the feasibility of a waste heat installation at Kotzebue. Some conclusions that can be made are that the project is technically feasible, that the people and agencies in the community seem quite enthusiastic about the project, and that if the economics prove acceptable, a waste heat system for the community can be recommended. Two graphs follow this page that illustrate the current waste heat situation in Kotzebue. The first graph entitled “Heat Available Vs. Heat Required" shows the relationship be- tween these two quantities for each month of a year. The highest line represents the heat available from the power plant in terms of equivalent gallons of fuel oil. Each of the other three lines represent a construction option: the concept 1, the concept 3, and the concept 5. The graph shows that the Concept 5 Is the only concept which comes close to using all of the energy available. The second graph Is entitled "Fuel Oll Displaced" and shows the amount of recovered energy in equivalent gallons of fuel oil for three of the construction options for the year. A similar shape as was shown in the previous graph is displayed. Page 94 G6 e6Dd KOTZEBUE WASTE HEAT RECOVERY HEAT AVAILABLE VS. HEAT REQUIRED FUEL OIL EQUIVALENT (GALLONS) 60,000 50 ONE eee ee a == 30,000 20,000 10,000 | 0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MONTH OF THE YEAR LEGEND —— HEAT AVAILABLE —+— HEAT REQ. - 1 —*— HEAT REQ. - 3 —&—_ HEAT REQ. - 5 3/30/90 96 @BDd 40,000 30,000 20,000 10,000 3/30/90 KOTZEBUE WASTE HEAT RECOVERY FUEL OIL DISPLACED FUEL OIL EQUIVALENT (GALLONS) 0 JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC MONTH OF THE YEAR LEGEND H@B concept1 WZ Concept 3 Concept 5 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 APPENDIX ls Calculations 2. Contact Names 3. Cost Estimates 4. Raw Data KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Calculations KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 WASTE HEAT RECOVERY CALCULATION METHOD Input Before the calculation of recovered waste heat can take place, the user must input in- formation about power production, fuel use, and system heat loss. The information is for each month of a year. The year Is assumed to be either an average year or a represen- tative year. The power production information must include the amount of power produced for each month of a year and the amount of heat rejected to the jacket water for each KWH of power produced. The power production Is from historical records and the heat rejection data is from the manufacturer of the engine/generators being used for power production. The fuel use data is for each of the potential waste heat user buildings. It is fuel oil use for each month of the “average” year. It is also assumed that the fuel oil use reported here Is only for heating energy that can be displaced by waste heat recovery. It would not Include fuel oll used by a separate fuel oil-fired water heater. The information ideally should be based on historical information but can also be estimated on a monthly basis for yearly fuel oil use. The system heat loss Is a number that represents the energy that Is rejected to the jacket water, but is lost or used before it can be used by the end user buildings. Examples of this system loss can include: heat loss of the generator cooling system piping, heat loss from the arctic pipe, and heat recovery in the power plant for space heating or fuel oil heating. This figure must be estimated based on available information. Assumptions The most important assumptions made in this model are the diumal variation of the heat demand, and the power production. The figures shown in the calculations represent a ‘typical’ pattem for rural environments. The heating demand follows an approximate sine curve with minimum demand at solar noon, and maximum demand at solar mid- night. The diurnal variation for power plant production is less regular. The variation as- sumed has peaks in the moming (around 8:00) and near noon and at 6:00 pm. The lowest power production occurs near midnight. KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 When calculating the energy demand for the buildings based on their fuel oil use, it is as- sumed that each gallon of fuel oll corresponds to 100,000 BTU. This represents ap- proximately a 71% efficient boiler or fumace. Actual efficiencies will vary. Calculations The heat available is calculated by dividing the monthly power production by the num- ber of days In the month - yielding the power production on an average day, then by multiplying that figure by the hourly power production variation for each hour. This is the power produced for each hour of the average day of the month. This figure is multiplied by the manufacturer's factor for heat rejected to the jacket water. The result is the gross heat available at the power plant on an hourly basis. The system heat loss is subtracted from the gross amount, leaving the amount available for building use. The heat required by the buildings is accomplished in a similar manner. The sum of all the buildings fuel use Is multiplied by 100,000 BTU/gallon and adjusted to yield the hourly heat demand for the average day of the month. The heat recovered Is just the smaller number of the heat available and the heat demand; if the heat available Is larger than the heat demand, all of the heat available will be used. If the reverse is ttue and much more heat is available, then all of the build- ing heat demand requirements will be met. The number of gallons displaced also as- sumes that each 100,000 BTU corresponds to one gallon of fuel oil. KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 1 CONCEPT 1 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: KOTZEBUE Date:March 38, 1998 Heat rate: 2458 Btu/kwh produced System loss: 263,068 Btu/hour (FOR ALL SYSTEMS CONNECTED) Total Gen.: 16,981,006 kwh/year Assumed diurnal heat Power plant monthly generation: demand variation: Gescsesessesses Monthly JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NoV DEC CHECKSUM Fraction:6.10949 6.69833 6.67926 6.67668 6.68466 6.06706 6.66515 6.68481 6.07595 8.88618 6.09208 0.08834 1 Winte Summer Hour Kwh: 1859386 1534812 1346842 1362175 1437727 1138857 1186447 1448325 1289874 1462261 1563699 1500261 16981006 Diurnal 6.0494 9.6494 1 variation 6.038 6.038 6.038 6.038 6.045 6.045 6.045 6.045 6.045 6.045 6.038 6.038 6.6477 6.6477 2 6.036 6.036 6.036 6.036 6.046 6.046 6.040 6.046 6.046 6.040 6.036 0.036 0.0468 6.0468 3 0.034 6.034 6.034 6.034 6.036 6.036 6.036 6.036 6.036 6.036 0.034 0.034 8.0443 6.0443 4 0.034 6.034 6.034 6.034 8.035 6.035 6.035 6.035 8.035 6.035 6.034 0.034 6.0428 6.0428 5 6.053 6.055 6.053 6.053 6.035 6.035 6.035 8.035 6.035 6.035 6.033 6.033 6.0414 8.0414 6 6.034 6.034 6.034 6.034 6.038 6.0358 6.038 6.058 6.058 6.038 6.034 6.034 6.0401 6.6401 7 6.038 6.038 68.038 98.038 6.638 6.038 6.038 6.038 6.038 6.038 6.038 9.038 9.0398 6.0390 8 6.042 6.042 6.042 6.042 6.040 6.040 8.040 6.040 0.040 6.040 6.042 6.042 6.0381 6.0381 9 6.042 6.042 6.042 6.042 6.045 6.045 6.045 6.045 6.045 6.045 6.042 0.042 6.0374 6.0374 16 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.647 6.0378 6.0376 af 6.048 6.048 6.048 0.048 6.040 6.040 6.040 8.040 6.040 0.040 0.048 0.048 6.0367 6.0367 12 6.047 6.047 6.047 6.047 6.048 6.048 6.048 6.048 6.048 6.048 6.047 06.047 6.0367 6.0367 13 6.045 6.045 6.045 6.045 6.056 6.058 6.056 6.056 6.056 6.050 6.045 9.045 6.0378 6.0378 14 8.047 6.047 6.047 6.047 8.052 6.052 8.052 6.052 6.052 6.052 6.047 6.047 6.0574 6.0374 15 6.048 6.048 6.048 6.048 6.050 6.050 6.050 6.050 6.050 6.050 6.048 0.048 6.0381 9.0381 16 6.048 6.048 6.048 6.048 6.056 6.050 6.050 6.050 6.050 0.050 0.048 06.048 6.0398 6.0390 17 6.049 6.049 6.049 6.049 6.045 6.045 6.045 6.045 6.045 6.045 6.049 0.049 6.0401 6.0401 18 6.046 6.046 6.046 6.046 6.047 6.047 6.047 6.047 6.047 6.047 6.046 8.046 8.0414 6.0414 19 8.043 6.043 6.043 6.043 6.058 6.050 6.050 6.050 6.050 0.050 0.043 0.043 6.0428 6.0428 28 9.038 8.038 8.038 6.038 6.045 6.045 6.045 6.045 6.045 0.045 0.038 0.038 8.0443 6.0443 21 6.038 6.058 6.058 6.058 6.041 6.041 6.041 6.041 6.041 0.041 0.038 06.038 6.0466 0.0460 22 6.041 6.041 8.041 6.041 6.041 6.041 6.041 6.041 6.041 0.041 6.041 0.041 6.0477 6.0477 23 8.045 6.045 6.045 6.045 6.041 6.041 6.041 6.041 6.041 6.041 6.045 6.045 8.0494 6.0494 24 6.040 6.040 6.040 08.040 6.043 6.043 6.043 6.043 6.043 6.043 8.040 0.040 Building use per month, gallons of fuel oil KEA HEAT RECOVERY LOOP 3068 3111 2528 2118 391 185 121 238 1613 1854 2277 2571 19,451 HOSPITAL 14174 14418-11674 9888 = 5987 = 2828 1857-3538 = 4691 8585 10546 11910 168,000 SENIOR CENTER 6 8 6 6 6 6 6 6 6 6 6 8 8 A.C. CO. STORE 6 6 8 8 8 6 6 6 6 a 8 8 4 KIC APTS 6 6 6 6 8 a a 6 8 8 6 8 a KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 2 PUBLIC WORKS WATER TREATMENT BUILDING ELEMENTARY SCHOOL MIDDLE SCHOOL HIGH SCHOOL ARMORY RECREATION CENTER TOTAL meee oe asa ee ana a Bae oan a Bees anon meBaeaae eases Be aes ao a eae eo asa See oaon Beas onan Sea so aaon SBaeeo ann Bee so aonan 14,174 14,418 11,674 9,888 5,987 2,828 1,857 3,538 4,691 8,585 10,546 11,918 Heat available per hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4930546 3926459 3447184 3378232 4884181 3834462 3727396 4919750 4247283 4735225 4152794 3910884 2 4648464 3697677 3244715 3180548 4307441 3376982 5282523 4341047 3733624 4156968 3913882 3683865 3 4366057 3467366 3641979 2982623 3846453 3611646 2926751 3878322 3323744 3696263 3674728 3456572 4 4382513 3484097 3055531 2994814 3732762 2920318 2838289 3763557 3225306 3588469 3686973 3470399 5 4248266 3376314 2959892 2899871 3734744 2921256 2838982 3764722 3230448 3597864 3572573 3362597 6 4412288 3514368 3080051 3814623 4885947 3197286 3186885 4113882 3546819 3959882 3709129 3495415 7 5824065 4821536 3524199 3442961 4885578 3198858 3107388 4114762 3551845 3967536 4222383 3989458 8 5634188 4526953 3966912 3876894 4318572 3382169 5285968 4347595 3762464 4289742 4734346 4482037 9 5643174 4536159 3974385 3876375 4898698 5841338 3731888 4928298 4284894 4804062 4741892 4489662 18 6398899 5168973 4522168 4405571 5131174 4825196 3910388 5160818 4494969 5843887 5375965 5099656 11 6553364 5289311 4634458 4513789 4321223 3383423 5286788 4349154 3769331 4222311 5585418 5224445 12 6485989 5168181 4527999 4410479 5247873 4117347 3999781 5277353 4681281 5165867 5381240 5105613 13 6186482 4921885 4311181 4280727 5479468 4300792 4178005 5509358 4888972 5481396 5129363 4863954 14 6483611 5165763 4526041 4488833 5718742 4484094 4356136 5741185 5815955 5635484 5379471 5103615 15 6548652 5284521 4630569 4510447 5478554 4300364 4177725 5508825 4806624 5397100 5501964 5220486 16 6541694 5277447 4624839 4505631 5477665 4299943 4177458 5508302 4804321 5392884 5496726 5214640 17 6682373 5391769 4725775 4604226 4897539 3840782 3731538 4927688 4281898 4798564 5615913 5327845 18 6222891 5889928 4391471 4281978 5127717 4823561 3989318 5158784 4486012 5827415 5229894 4956096 19 5768868 4626299 4055733 3958587 5473466 4297957 4176158 5585832 4793443 5372975 4842588 4582882 28 4997833 3994054 3581937 3424251 4892676 3838481 3738625 4924748 4269293 4775508 4202268 3966746 21 4981526 3978288 3489167 3413518 4427522 3470654 3372963 4459572 3848618 4295055 4196729 3953717 22 5414338 4332282 3800842 3716756 4425419 3469659 3372312 4458535 3843170 4285085 4556300 4302380 23 5996244 4809089 4228396 4124424 4423234 3468625 3371636 4457050 3837510 4274725 5047332 4771332 24 5230053 4173555 3664082 3587984 4652594 3651817 3549171 4687745 4039512 4499696 4404672 4152544 1E+88 «= 1E+88 «= SE+87«(SE+O7 «= 1E+08 «= SE+O7 «= SE+O7 «= 1E+O8 «= 1E+O8 «= TE+88 = TE+O8 = T1E+08 Heat demand by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 2382482 2340819 1896372 1593251 972552. 459391. 361658. 573427. 762625. 1394582 1713135 1934769 2 2221775 2258766 1829899 1537483 938462. 443288. 291884. 553327. 735314. 1345698 1653085 1866892 3 2142568 2178243 1764664 1482596 905006. 427485. 288787. 533601. 709108. 1297725 1594153 1800338 4 2066342 2100747 1761882 1429849 872888. 412277. 276728. 514617. 683872. 1251555 1537438 1736287 5 1994515 2627724 1642724 1388147 842469. 397946. 261310. 496729. 660181. 1268051 1483996 1675933 6 1928425 1968533 1588298 1334414 814553. 384759. 252651. 480269. 638227. 1168020 1434822 1620399 7 1869382 1988426 1539596 1293583 789588. 372963. 244985. 465545. 618668. 1132211 1398832 1570728 8 1818249 1848523 1497547 1258176 768816. 362777. 238217. 452838. 601764. 1161289 1352847 1527822 9 1776216 1885791 1462928 1229698 758261. 354391. 232710. 442362. 587853. 1875838 1321573 1492503 18 1743987 1773824 1436383 1206788 736648. 347968. 228487. 434335. 577186. 1056389 1297593 1465421 11 1722161 17508835 1418407 1191686 727429. 343606. 225628. 428908. 569963. 10843089 1281354 1447082 CONCEPT 1 Bee sansa 108 , 088 ANNUAL 3. 82E+16 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION 12 13 14 15 16 17 18 19 PERREB oryraweun — 9 16 W 12 13 4 15 16 17 18 19 26 ai 22 23 24 1711145 1739636 1711145 1739636 1722161 1758835 1743987 1773624 1776216 1885791 1818249 1848525 1869382 1966427 1928425 1960533 1994515 2627724 2066343 2188748 2142569 2178243 2221774 2258767 2382482 2340819 PAGE 3 1409335 1184063 722776. 1489335 1184863 722776. 1418487 1191686 727429. 1436384 1286788 736648. 1462928 1229898 750261. 1497548 1258176 768016. 1539596 1293583 789580. 1588298 1334414 814553. 1642724 1386147 842469. 1761882 1429849 872889. 1764664 1482596 985006. 1829899 1537485 938462. 1896372 1593251 972552. 341408. 341408. 343606. 347968. 354391. 362777. 372963. 384759. 397946. 412277. 427485. 443288. 459391. SE+O7 «=SE+O7 «= 4E+87 3E+O7 © 2E+87 9296515 Heat delivered by hour by month (BTU) JAN FEB MAR 2362482 2348819 1896372 2221773 2258766 1829899 2142568 2178243 1764664 APR MAY 1593251 972552. 1537403 938462. 1482596 9850806. JUN 459391. 443288. 427485. 2066342 2106747 1994515 2627724 1928425 1968533 1869362 1966426 1818249 1848523 1776216 1885791 1743987 1773624 1722161 1756835 1711145 1739636 1711145 1739636 1722161 1756835 1743987 1773624 1776216 1885791 1818249 1848525 1869382 1988427 1928425 1968533 1994515 2027724 2866343 2188748 2142569 2178243 2221774 2258767 2382482 2348819 5E+87 «= SE+87 FUEL OIL CONSUMPTION DISPLACED (GALLONS) JAN 14174 FEB 14418 1761882 1642724 1588298 1539596 1497547 1462928 1436383 1418487 1489335 1489335 1418487 1436384 1462928 1497548 1539596 1588298 1642724 1701882 1764664 1829899 1896372 4E+07 MAR APR 11674 = 9888 MAY 1429849 872868. 1386147 842469. 1334414 814553. 1293583 789588. 1258176 768616. 1229898 758261. 1266788 736648. 1191686 727429. 1184863 722776. 1184863 722776. 1191686 727429. 1286788 736648. 1229898 758261. 1258176 768616. 1293583 789588. 1334414 814553. 1388147 842469. 1429849 872889. 1482596 985886. 1537483 938462. 1593251 972552. 3E+O7 «© 2E+87 9296515 6104536 5987 412277. 397946. 384759. 372963. 362777. 354391. 347968. 343606. 341408. 341468. 343606. 347968. 354391. 362777. 372963. 384759. 397946. 412277. 427485. 443288. 459391. JUN 2828 224184. 224184. 225628. 228487. 232718. 238217. 244985. 252651. 261318. 276728. 288767. 291884. 381658. 6184536 JUL 381658. 291884. 286787. 276728. 261318. 252651. 244965. 238217. 232716. 228487. 225628. 224184. 224184. 225628. 228487. 232716. 238217. 244905. 252651. 261318. 276728. 286787. 291684. 301658. JUL 1857 426156. 426156. 428900. 434335. 442362. 452830. 465545. 488269. 496729. 514617. 533601. 553327. 573427. 1E+87 AUG 573427. 553327. 533601. 514617. 496729. 480269. 465545. 452830. 442362. 434335. 428900. 426156. 426156. 428908. 434335. 442362. 452838. 465545. 488269. 496729. 514617. 533681. 553327. 573427. 1E+87 AUG 3530 566317. 566317. 569963. 577186. 587853. 601764. 618668. 638227. 660101. 683872. 769186. 735314. 762025. 2E+07 SEP 762825. 735314. 769168. 683872. 660101. 638227. 618668. 601764. 587853. 577186. 569963. 566317. 566317. 569963. 577186. 587853. 601764. 618668. 638227. 660101. 683872. 769108. 735314. 762825. 2E+87 SEP 4691 1036417 1036417 1043889 1856369 1875838 1101289 1132211 1168821 1208051 1251556 1297725 1345698 1394582 3E+O7 oct 1394582 1345698 1297725 1251555 1268051 1168828 1132211 1181289 1875838 1656389 1043089 1036417 1836417 1843089 1056369 1875838 1161289 1132211 1168821 1268851 1251556 1297725 1345698 1394582 3E+87 ocT 8585 1273158 1273158 1281354 1297593 1321573 1352847 1396832 1434822 1483996 1537438 1594153 1653085 1713135 3E+O7 NOV 1713135 1653685 1594153 1537438 1483996 1434822 1398832 1352847 1321573 1297593 1281354 1273158 1273158 1281354 1297593 1321573 1352847 1396832 1434822 1483996 1537438 1594153 1653685 1713135 3E+67 10546 1437826 1437826 1447682 1465421 1492503 1527822 1570728 1628399 1675933 1736287 1860338 1866892 1934789 4E+07 DEC 1934769 1866892 1880338 1736287 1675933 1628399 1576728 1527822 1492503 1465421 1447082 1437826 1437826 1447682 1465421 1492563 1527822 1578728 1628399 1675933 1736287 1808338 1866892 1934769 4E+07 DEC 11918 CONCEPT 1 ANNUAL 1.O0E+16 ANNUAL. 1.O0E+18 ANNUAL, 108 , 008 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 1 7 CONCEPT 2 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: KOTZEBUE Date:March 38, 1998 Heat rate: 24508 Btu/kwh produced System loss: 347,008 Btu/hour (FOR ALL SYSTEMS CONNECTED) Total Gen.: 16,981,086 kwh/year Assumed diurnal heat Power plant monthly generation: demand variation: a Monthly JAN FEB MAR APR MAY JUN JUL AUG SEP oct Nov DEC CHECKSUM Fraction:8. 18949 8.89833 6.67926 6.87668 0.08466 0.06706 8.06515 0.08481 0.07595 6.08610 8.99208 6.08834 1 Winte Summer Hour Kwh: 1859386 1534812 1346842 1382175 1437727 1138857 1186447 1440325 1289874 1462201 1563699 1568261 16981006 Diurnal 8.0494 6.0494 1 variation 8.638 6.038 6.058 8.058 6.045 6.045 6.045 6.045 6.045 6.045 6.038 0.038 6.6477 6.8477 2 6.056 8.036 6.056 6.036 6.046 6.046 6.046 6.046 6.040 0.048 6.036 9.036 6.0460 6.0460 3 6.054 6.034 6.034 8.034 6.056 6.036 6.036 6.036 0.036 6.036 8.034 0.034 8.0443 6.0443 4 6.034 6.034 6.054 6.054 6.035 6.035 6.035 8.035 6.035 6.035 6.034 0.034 8.0428 6.0428 5 6.053 8.033 6.055 6.033 6.035 8.035 8.035 6.035 6.035 8.035 0.033 9.033 6.0414 6.0414 6 6.054 6.034 6.034 6.034 6.038 6.038 6.038 6.038 6.038 8.038 6.034 9.034 8.0401 6.0401 @ 6.038 6.038 6.038 6.038 6.038 6.038 6.038 6.038 8.038 6.038 6.038 9.038 8.0398 6.0398 8 6.042 6.042 6.042 6.042 6.040 6.040 0.040 6.040 6.048 0.040 0.042 8.042 6.0381 6.0381 9 6.042 6.042 6.042 6.042 6.045 6.045 0.045 6.045 6.045 0.045 68.042 6.042 8.0374 6.0374 16 6.047 8.047 6.047 6.047 6.047 6.047 0.047 6.047 6.047 6.047 0.047 8.047 8.0378 6.0378 "1 6.048 8.048 6.048 6.048 6.040 8.040 0.040 6.040 6.040 0.040 0.048 0.048 6.0367 6.0367 12 6.047 8.047 6.047 6.047 6.048 6.048 0.048 6.048 8.048 0.048 6.047 0.047 6.0367 8.0367 13 8.045 8.045 6.045 6.045 6.050 06.050 0.050 6.050 9.058 8.050 0.045 0.045 9.0378 6.0378 14 8.047 8.047 6.047 6.047 6.052 6.052 8.052 6.052 8.052 6.052 6.047 9.047 8.0374 6.0374 15 6.048 6.048 6.048 6.048 6.058 6.058 6.056 6.050 8.058 6.050 6.048 6.048 8.0381 6.0381 16 6.048 6.048 6.048 6.048 6.058 6.050 0.058 6.050 8.058 6.050 0.048 0.048 6.0598 6.0598 17 6.049 6.049 6.049 6.049 6.045 6.045 0.045 6.045 8.045 6.045 0.049 0.049 6.0401 6.0461 18 6.046 6.046 6.046 6.046 6.047 6.047 6.047 6.047 6.047 6.047 0.046 6.046 6.0414 6.0414 19 6.045 0.043 6.645 6.043 6.050 6.058 6.050 6.050 0.058 6.050 0.043 0.043 6.0428 6.0428 26 6.038 8.038 6.038 6.038 6.045 6.045 0.045 6.045 0.045 0.045 0.038 0.038 9.0445 6.0445 21 6.038 8.058 6.038 6.058 0.041 6.041 0.041 6.041 6.041 0.041 0.038 9.038 6.0468 6.0468 22 6.041 6.041 6.041 6.041 6.041 6.041 6.041 6.641 6.041 6.041 0.041 0.041 8.0477 6.0477 23 6.045 8.045 6.045 6.045 6.041 6.041 6.041 6.041 6.041 0.041 6.045 8.045 8.0494 6.0494 24 0.048 0.048 6.040 8.040 6.043 6.043 0.043 6.043 0.043 6.043 0.040 0.040 Building use per month, gallons of fuel oil KEA HEAT RECOVERY LOOP 30683111 2528 2118 391 185 121 238 1613 1854 2277 2571 19,451 HOSPITAL 14174 14418-11674 9888 5987 2828 1857 3538 4691 8585 10546 11918 100,008 SENIOR CENTER 362738772493 28941279 604 397 754 = 1882, 1833-2252, 2543 21,355 A.C. CO. STORE 1572 1599 1295 1888 664 314 206 392 528 952 1178132111, 893 KIC APTS 2105 2148 1734 1457 889 420 276 524 697 1275 1566 1769 14,852 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 2 PUBLIC WORKS WATER TREATMENT BUILDING ELEMENTARY SCHOOL MIDDLE SCHOOL HIGH SCHOOL ARMORY RECREATION CENTER TOTAL Been aon Beason ans Bee aeana Ses aeaanes See aanans Beso a sas Bese aananns Bee a oan Beoeaaans Besa ans Sens aon ®ABESEAESBS 20,878 21,226 17,196 14,447 8,819 4,166 2,736 5,208 6,918 12,645 15,534 17,543 Heat available per hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4846546 3842459 3363184 3294232 4800181 3750462 3643396 4835750 4163283 4651225 4068794 3826884 2 4564464 3613877 3168715 3896548 4223441 3292982 3198523 4257047 3649624 4872968 3829882 3599865 3 4282057 3383366 2957979 2898623 3762453 2927046 2842751 3794322 3239744 3612263 3590728 3372572 4 4298513 3406897 2971531 2910814 3648762 2836318 2754289 3679557 3141386 3504469 3602973 3386399 5 4164266 3292314 2875892 2815871 3650744 2837256 2754982 3688722 3146448 3513864 3488573 3278597 6 4328288 3430368 2996051 2930623 3999947 3113286 3022803 4029882 3462819 3875882 3625129 3411415 7 4948065 3937536 3448199 3358961 4081578 3114058 3823308 4030762 3467045 3883536 4138383 3905458 8 5558108 4442933 3882912 3786894 4234572 5298169 3201968 4263595 3678464 4125742 4650348 4398037 9 5559174 4452159 3890385 3792375 4814698 3757336 3647888 4844298 4200894 4720062 4657092 4405662 1B 6314899 5876973 4438168 4321571 5847174 3941196 3826388 5876818 4410969 4959887 5291965 5015656 11 6469364 5285311 4558458 4429789 4237223 3299423 3202788 4265154 3685331 4138311 5421418 5140445 12 6321989 5884181 4443999 4526479 5163873 4833347 3915781 5193353 4517281 5881867 5297248 5021613 13 6822482 4837685 4227181 4116727 5395468 4216792 4894085 5425358 4724972 5317396 5045363 4779954 14 6319611 5881763 4442841 4324833 5626742 4400894 4272136 5657185 4931955 5551484 5295471 5019615 15 6464652 5288521 4546569 4426447 5394554 4216364 4893725 5424825 4722624 53131008 5417984 5136486 16 6457694 5193447 4540839 4421631 5393665 4215943 4093458 5424382 4720321 5308884 5412726 5130640 17 6598373 5387769 4641775 4528226 4813539 3756782 3647538 4843608 4197898 4714564 5531913 5243845 18 6138891 4925928 4387471 4197978 5843717 3939561 3825318 5074784 4462012 4943415 5145894 4872096 19 5676868 4542299 3971733 3874587 5389466 4213957 4892150 5421832 4789443 5288975 4758580 4498882 28 4913833 3918054 3417937 3340251 4808676 3754481 3646025 4840748 4185293 4691588 4118268 3882746 21 4897526 3894288 3405167 3329518 4343522 3386654 3288963 4375572 3764618 4211055 4186729 3869717 22 5330338 4248282 3716842 3632756 4341419 3385659 3288312 4374335 3759178 4201085 4472300 4218380 23 5912244 4725089 4136396 4040424 4339234 3384625 3287636 4373058 3753518 4198725 4963332 4687332 24 5146853 4089555 3580082 3503984 4568594 3567817 3465171 4603745 3955512 4415696 4320672 4068544 1E+O8 = 1E+88 «= SE+O7 «= SE+O7 «= 1E+08 «= SE+07 «= SE+O7 «= TE+O8 = TE+@8 = TE+O8 = 1E+O8 = 1E+08 Heat demand by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 3391587 3448038 2793388 2346829 1432594 676742. 444447. 844769. 1122488 2054105 2523406 2849756 2 3272625 3327174 2695472 2264566 1382377 653028. 428867. 815099. 1083142 1982103 2434953 2749864 3 3155958 3268562 2599388 2183836 1333096 629748. 413578. 786041. 1044528 1911442 2348149 2651833 4 3043678 3094411 2506982 2106141 1285669 607336. 398865. 758076. 1087367 1843439 2264609 2557489 5 2937878 2986848 2419768 2032931 1248978 586224. 385008. 731725. 972358. 1779368 2185889 2468589 6 2840529 2887875 2339579 1965567 1199857 566799. 372242. 787479. 948131. 1728398 2113458 2386789 7 2753442 2799338 2267851 1985306 1163871 549422. 360830. 685789. 911388. 1667654 2048662 2313614 8 2678242 2722884 2205913 1853278 1131386 534417. 350975. 667059. 886419. 1622188 1992711 2256426 9 2616329 2659938 2154918 1818427 1185154 522862. 342862. 651638. 865927. 1584669 1946645 2198403 18 2568855 2611674 2115817 1777577 1885181 512589. 336640. 639814. 858215. 1555857 1911323 2158513 11 2536787 2578989 2889338 1755331 1071521 586175. 332427. 631867. 839574. 1536385 1887483 2131499 CONCEPT 2 147,308 ANNUAL 3.75E+18 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 3 CONCEPT 2 12 2520481 2562493 2875974 1744103 1864667 562937. 330301. 627766. 834204. 1526558 1875330 2117866 13 2528481 2562493 2675974 1744183 1864667 582937. 330301. 627766. 834284. 1526558 1875338 2117866 14 2536767 2578989 2089338 1755331 1071521 506175. 332427. 631887. 839574. 1536385 1887483 2131499 15 2568856 2611674 2115818 1777577 1685101 512590. 336640. 639814. 858215. 1555857 1911323 2158513 16 2616329 2659939 2154919 1810427 1105154 522062. 342862. 651638. 865927. 1584609 1946645 2198403 17 2678242 2722884 2205913 1853276 1131386 534417. 358975. 667059. 886419. 1622188 1992711 2250426 18 2753443 2799338 2267851 1985386 1163071 549422. 360830. 685789. 911308. 1667654 2048662 2313614 19 2848529 2887875 2339579 1965567 1199857 566799. 372242. 707479. 940131. 1728399 2113458 2386790 28 2937879 2986848 2419768 2032931 1240978 586224. 385008. 731725. 972351. 1779360 2185898 2468589 21 3843679 3894412 2506982 2186142 1285669 687336. 398865. 758877. 1807367 1843439 2264609 2557489 22 3155958 3208563 2599388 2183836 1333897 629748. 413579. 786042. 1844528 1911442 2348149 2651833 23 3272626 3327175 2695472 2264566 1382378 653028. 428867. 815099. 1883142 1982103 2434954 2749864 24 3391507 3448038 2793388 2346829 1432594 676742. 444447. 844789. 1122488 2054105 2523486 2849756 = ANNUAL 7E+O87 «= 7E+87 «= GE+87 «= SE+87 = SE+87 «= 1E+07 8994082 9 2E+07 «= 2E+O7 «= 4E+O7 «= SE+O7 «= GE+O7 «1. 47E+108 Heat delivered by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 3391587 3448038 2793388 2346829 1432594 676742. 444447. 844709. 1122488 2054105 2523406 2849756 2 3272625 3327174 2695472 2264566 1382377 653628. 428867. 815099. 1083142 1982103 2434953 2749864 3 3155958 3288562 2599388 2183836 1333096 629748. 413578. 786041. 1844528 1911442 2348149 2651833 4 3843678 5694411 2566982 2186141 1285669 687336. 598865. 758876. 1867367 1843439 2264689 2557489 5 2937878 2986848 2419768 2852931 1248978 586224. 385608. 731725. 972358. 1779368 2185889 2468589 6 2848529 2887875 2339579 1965567 1199857 566799. 372242. 787479. 948131. 1728398 2113458 2386789 7 2753442 2799338 2267851 1985386 1163871 549422. 360838. 685789. 911308. 1667654 2048662 2313614 8 2678242 2722884 2205913 1853278 1131386 534417. 350975. 667059. 886419. 1622188 1992711 2250426 9 2616329 2659938 2154918 1818427 1185154 522862. 342862. 651638. 865927. 1584609 1946645 2198403 18 2568855 2611674 2115817 1777577 1685181 512589. 336648. 639814. 858215. 1555857 1911323 2158513 11 2536787 2578989 2889338 1755331 1871521 586175. 332427. 631807. 839574. 1536385 1887403 2131499 12 2528481 2562493 2875974 1744103 1664667 582937. 330301. 627766. 834204. 1526558 1875330 2117866 13 2528481 2562493 2075974 1744103 1064667 502937. 330301. 627766. 834204. 1526558 1875330 2117866 14 2536787 2578989 2089338 1755331 1671521 506175. 332427. 631887. 839574. 1536385 1887403 2131499 15 2568856 2611674 2115818 1777577 1685181 512598. 336648. 639814. 850215. 1555857 1911323 2158513 16 2616329 2659939 2154919 1818427 1105154 522062. 342862. 651638. 865927. 1584609 1946645 2198403 17 2678242 2722884 2205913 1853278 1131386 534417. 350975. 667059. 886419. 1622188 1992711 2250426 18 2753443 2799338 2267851 1985306 1163871 549422. 368830. 685789. 911308. 1667654 2048662 2313614 19 2848529 2887875 2339579 1965567 1199857 566799. 372242. 767479. 948131. 1728399 2113458 2386790 26 2937879 2986848 2419768 2052931 1248978 586224. 385868. 731725. 972351. 1779368 2185898 2468589 21 3843679 3894412 2586982 2186142 1285669 607536. 398865. 758877. 1007367 1843439 2264609 2557489 22 3155958 3288563 2599388 2183836 1333097 629748. 413579. 786042. 1044528 1911442 2348149 2651833 23 3272626 3327175 2695472 2264566 1382378 653020. 428867. 815899. 1083142 1982103 2434954 2749864 24 3391587 3448038 2793388 2346829 1432594 676742. 444447. 844789. 1122488 2054105 2523406 2849756 ANNUAL 7E+87 «= 7E+87 —« GE+07 «= SE+O7 «= SE+O7 = 1E+07 8994082 2E+07 «= 2E+07 «= 4E+07 «= SE+O7 «= GE+O7 1.4 7E+10 FUEL OIL CONSUMPTION DISPLACED (GALLONS) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC ANNUAL 20878 = 21226 «1719614447, 8819 4166 «= 2736 «= 5288 = 6918) 12645 1553417543 147,308 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 1 CONCEPT 3 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: KOTZEBUE Date:March 38, 1998 Heat rate: 2458 Btu/kwh produced System loss: 416,008 Btu/hour (FOR ALL SYSTEMS CONNECTED) Total Gen.: 16,981,086 kwh/year Assumed diurnal heat Power plant monthly generation: demand variation: MWh Monthly JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC CHECKSUM Fraction:8.18949 6.69833 6.87926 6.07668 6.08466 6.66706 0.06515 0.08481 0.87595 6.08610 8.69208 8.08834 t Winte Summer Hour Kwh: 1859386 1534812 1346642 1382175 1437727 1138857 1186447 1448325 1289874 1462281 1563699 1508261 16981006 Diurnal 6.0494 6.0494 1 variation 6.038 6.038 6.038 6.038 6.045 6.045 6.045 6.045 6.045 6.045 6.038 6.038 6.6477 6.8477 2 6.036 6.036 6.036 6.036 6.040 6.040 6.040 6.040 6.040 6.046 6.036 06.036 6.0460 6.0460 3 6.054 6.054 6.054 6.034 6.036 6.036 6.036 6.036 8.056 0.036 06.034 6.034 6.0443 0.0443 4 6.034 8.034 6.034 6.034 6.055 6.035 8.035 6.035 6.055 8.035 0.034 8.034 6.6428 6.0428 5 6.033 6.033 6.033 8.033 8.035 8.035 8.035 8.035 8.035 6.035 8.033 0.033 6.0414 6.0414 6 6.054 6.054 6.034 6.054 6.038 6.038 08.038 08.038 8.038 6.038 0.034 06.034 6.6481 8.0401 7 8.038 6.038 6.038 6.038 6.038 8.038 08.038 0.038 8.038 6.038 6.038 9.038 6.0396 6.0398 8 6.042 6.642 6.042 6.042 6.040 6.040 6.040 6.040 6.040 6.040 6.042 06.042 6.0381 6.0381 9 6.042 6.042 6.042 6.042 6.045 6.045 6.045 6.045 6.045 6.045 06.042 06.042 6.0374 6.0374 16 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 0.047 0.047 6.0378 6.0378 " 6.048 6.048 6.048 6.048 6.040 6.040 0.040 0.040 0.040 6.040 6.048 0.048 6.0367 6.0367 12 6.047 6.047 6.047 6.047 6.048 6.048 6.048 6.048 8.048 6.048 06.047 0.047 6.0367 6.0367 13 8.045 8.045 6.045 8.045 6.058 0.050 8.050 0.050 6.058 9.056 8.045 0.045 6.0376 6.0370 14 6.047 6.647 6.047 6.047 6.052 6.052 6.052 6.052 8.052 6.052 06.047 06.047 6.0374 8.8374 15 6.048 6.048 6.048 6.048 6.050 6.050 6.050 6.058 6.050 6.056 6.048 0.948 9.0381 9.0381 16 6.048 6.648 6.048 6.048 6.058 6.050 6.050 6.050 6.050 6.050 06.048 0.048 6.0598 6.0396 17 8.049 6.049 8.649 6.049 6.045 8.045 6.045 6.045 6.045 6.045 6.049 0.049 6.0401 6.0481 18 8.046 6.046 6.046 6.046 6.047 6.047 6.047 6.047 6.047 6.047 6.046 0.046 6.0414 6.0414 19 6.045 6.043 6.043 6.043 6.058 0.050 0.050 0.058 6.058 6.058 6.043 0.043 6.0428 6.0428 26 6.038 6.038 6.038 6.038 6.045 0.045 0.045 0.045 6.045 6.045 6.038 0.038 6.0443 6.0443 21 8.058 6.058 6.058 6.038 6.041 6.041 6.041 6.041 6.041 0.041 6.038 0.038 6.0460 6.0460 22 6.041 8.041 6.041 6.041 6.041 0.041 0.041 6.041 6.041 6.041 6.041 0.041 6.0477 6.0477 23 6.045 6.045 6.045 6.045 6.041 6.041 6.041 6.041 6.041 0.041 0.045 0.045 6.0494 6.0494 24 6.040 6.040 6.040 6.040 6.043 6.043 0.043 0.043 6.043 6.043 6.040 0.040 Building use per month, gallons of fuel oil KEA HEAT RECOVERY LOOP 30683111 25282118 391 185 121 238 1613 1854 2277 2571 19,451 HOSPITAL 14174 14418-11674 9888 865987 = 2828 1857 3538 = 4691 8585 10546 11918 108,008 SENIOR CENTER 3027-3877, 2493 2894 1279 604 397 754 1662 1833-2252 2543 21,355 A.C. CO. STORE 1572 1599 1295 1088 664 314 206 392 528 952 1178 1321 11,093 KIC APTS 2105 = 214817341457 889 428 276 524 697 1275 = 1566 = «1769S: 14,852 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 2 PUBLIC WORKS WATER TREATMENT BUILDING ELEMENTARY SCHOOL MIDDLE SCHOOL HIGH SCHOOL ARMORY RECREATION CENTER TOTAL 2467 «2508 =—.2832 1787 1842 492 323 614 817 1494 1836 =. 2073 87178741 8467 = 8281 599 283 186 353 469 8159 = 8355 8491 32,062 32,475 27,695 24,435 18,460 4,941 3,245 6,167 8,196 22,298 25,725 28,107 Heat available per hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4777546 3773459 3294184 3225232 4731181 3681462 3574396 4766758 4894283 4582225 3999794 3757884 2 4495464 3544077 3891715 3627548 4154441 3223982 3129523 4188047 3580624 4005960 3760882 3530865 3 4213057 3314366 2888979 2829623 3693453 2858846 2773751 3725322 3178744 3543263 3521728 3303572 4 4229513 3331697 2962531 2841814 3579762 2767318 2685289 3610557 3872306 3435469 3533975 3317399 5 4095266 3223314 2886892 2746871 3581744 2768256 2685982 3611722 3877448 3444864 3419573 3209597 6 4259288 3361368 2927051 2861623 3930947 3644286 2953803 3968802 3393819 3806882 3556129 3342415 7 4871865 3868536 3371199 3289961 3932578 3845058 2954388 3961762 3398045 3814536 4069383 3836458 8 5481108 4373933 3813912 3717894 4165572 3229169 3132968 4194595 3689464 4056742 4581348 4329037 9 5490174 4383159 3821385 3723375 4745698 3688338 3578888 4775298 4131894 4651862 4588092 4336662 18 6245899 5887973 4369168 4252571 4978174 3872196 3757388 5887818 4341969 4898887 5222965 4946656 11 6408364 5136311 4481458 4368789 4168223 3230423 3133788 4196154 3616331 4069311 5352418 5871445 12 6252989 5815181 4374999 4257479 5894873 3964347 3846781 5124353 4448281 5012867 5228248 4952613 13 5953482 4768885 4158181 4047727 5326460 4147792 4825005 5356358 4655972 5248396 4976363 4710954 14 6258611 5812763 4373641 4255833 5557742 4331694 4203136 5588185 4862955 5482484 5226471 4950615 15 6395652 5131521 4477569 4357447 5325554 4147364 4024725 5355825 4653624 5244108 5348904 5067486 16 6388694 5124447 4471839 4352631 5324665 4146943 4824450 5355382 4651321 5239884 5343726 5061640 17 6529373 5238769 4572775 4451226 4744539 3687782 3578538 4774608 4128898 4645564 5462913 5174845 18 6869891 4856928 4238471 4128978 4974717 3870561 3756318 5805784 4333812 4874415 5876894 4803096 19 5687868 4473299 3962733 3805587 5328466 4144957 4823150 5352832 4648443 5219975 4689588 4429882 28 4844853 3841054 3348937 3271251 4739676 3685481 3577825 4771748 4116293 4622508 4049268 3813746 21 4828526 3825288 3336167 3260518 4274522 3317654 3219963 4306572 3695618 4142855 4037729 3806717 22 5261338 4179282 3647842 3563756 4272419 3316659 3219312 4385335 3690178 4132085 4403300 4149380 23 5843244 4656009 4067396 3971424 4278234 3315625 3218636 4304058 3684518 4121725 4894332 4618332 24 5877853 4820555 3511882 3434984 4499594 3498817 3396171 4534745 3886512 4346696 4251672 3999544 1E+O8 «= 1E+08 = SE+O7 = SE+O7 = 1E+88 = SE+O7 «= SE+O7 = 1E+O8 = SE+O7—TE+OS = TE+OS = TE +8 Heat demand by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 5288282 5275371 4498888 3969321 1699165 882636. 527131. 1881792 1331391 3622178 4178874 4565815 2 5825717 5696455 4341198 3838185 1639664 774581. 588653. 966677. 1284722 3495218 4832392 4405771 3 4846553 4988983 4186429 3693641 1581153 746891. 498528. 952215. 1238923 3370608 3888640 4248707 4 4674127 4734336 4037488 3562232 1524988 728318. 473069. 899058. 1194845 3258692 3750294 4897551 5 4511652 4569768 3897143 3438407 1471894 695288. 456625. 867798. 1153312 3137696 3619951 3955118 6 4362153 4418343 3768007 3324472 1423121 672241. 441494. 839843. 1115896 3833725 3499981 3824061 7 4228416 4282884 3652485 3222548 1379498 651631. 427958. 813319. 1688988 2948716 3392677 3706821 8 4112933 4165913 3552731 3134536 1341815 633834. 416278. 791186. 1051387 2860401 3300018 3605583 9 4017853 4069688 3470682 3062875 1318796 619182. 406647. 772818. 1627882 2794276 3223731 3522232 18 3944949 3995765 3407628 3006513 1287611 687946. 399268. 758795. 1088446 2743574 3165237 3458321 11 3895579 3945759 3364982 2968887 1278985 600338. 394272. 749299. 995825. 2789239 3125624 3415041 17,405 61,101 eBeaa ts 225, 806 ANNUAL 3.68E+10 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 3 CONCEPT 3 12 3878661 3928521 3343458 2949897 1262775 596498. 391758. 744506. 989456. 2691918 3105632 3393197 13 3878661 3920521 3343458 2949897 1262775 596498. 391758. 744506. 989456. 2691918 3105632 3393197 14 3895579 3945759 3364982 2968887 1278985 660338. 394272. 749299. 995825. 2769239 3125624 3415041 15 3944949 3995765 3407628 3606513 1287811 607947. 399268. 758795. 1608446 2743574 3165237 3458321 16 4817853 4869689 3478662 3862675 1318796 619182. 406647. 772818. 1827882 2794276 3223731 3522232 17 4112933 4165913 3552731 3134537 1341815 633834. 416278. 791186. 1851387 2860481 3300019 3605583 18 4228417 4282884 3652486 3222549 1379491 651631. 427958. 813319. 1888989 2940716 3392677 3706821 19 4362153 4418344 3768087 3324472 1423121 672241. 441494. 839043. 1115096 3033725 3499981 3824061 28 4511652 4569768 3897143 3438487 1471894 695288. 456625. 867798. 1153312 3137696 3619932 3955118 21 4674127 4734336 4037489 3562233 1524981 720318. 473069. 899058. 1194846 3250692 3750294 4097552 22 4846553 4988983 4186429 3693641 1581153 746891. 498528. 932215. 1238923 3376608 3888640 4248708 23 5825717 5898455 4341198 3838185 1639604 774581. 588653. 966677. 1284722 3495211 4032393 4405771 24 5208282 5275372 4498889 3969321 1699165 882636. 527131. 1081792 1331391 3622178 4178874 4565816 ANNUAL 1E+O8 =1E+08 «= 9SE+O7 «= SE+O7 «= SE+O7 «= 2E+07 = 1E+O7 «= 2E+07 «= SE+O7 «= 7E+O7 «= SE+O7 «=: SE+O7 «2. 26E+10 Heat delivered by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4777546 3773459 3294184 3225232 1699165 882636. 527131. 1081792 1331391 3622178 3999794 3757884 2 4495464 3544077 3091715 3627548 1639684 774501. 508653. 966677. 1284722 3495218 3760882 3530865 3 4213057 3314366 2888979 2829623 1581153 746891. 498528. 932215. 1238923 3376688 3521728 3303572 4 4229513 3331897 2982531 2841814 1524988 720318. 473069. 899058. 1194845 3250692 3533973 3317399 5 4895266 3223314 2806892 2746871 1471894 695280. 456625. 867798. 1153312 3137696 3419573 3209597 6 4259288 3361368 2927051 2861623 1423121 672241. 441494. 839643. 1115896 3033725 3499981 3342415 7 4228416 3868536 3371199 3222548 1379498 651631. 427958. 813319. 1088968 2948716 3392677 3706821 8 4112933 4165913 3552731 3134536 1341815 633834. 416278. 791106. 1051387 2860401 3300018 3605583 9 4817853 4869688 3478662 3862875 1316796 619182. 406647. 772818. 1627882 2794276 3223731 3522232 18 3944949 3995765 3487628 3006515 1287611 687946. 399268. 758795. 1008446 2743574 3165237 3458321 11 3895579 3945759 3364982 2968887 1278985 600338. 394272. 749299. 995825. 2709239 3125624 3415041 12 3876661 3928521 3343458 2949897 1262775 596498. 391758. 744506. 989456. 2691918 3185632 3393197 13 3878661 3928521 3343458 2949897 1262775 596498. 391758. 744506. 989456. 2691918 3185632 3393197 14 3895579 3945759 3364982 2968887 1270905 600338. 394272. 749299. 995825. 2789239 3125624 3415041 15 3944949 3995765 3407628 3006513 1287811 607947. 399268. 758795. 1088446 2743574 3165237 3458321 16 4817853 4069689 3478682 3062075 1318796 619182. 406647. 772818. 1627882 2794276 3223731 3522232 17 4112933 4165913 3552731 3134537 1341815 633834. 416278. 791186. 1051387 2860401 3300019 3605583 18 4228417 4282884 3652486 3222549 1379491 651631. 427958. 813319. 1686989 2948716 3392677 3706821 19 4362153 4418344 3768087 3324472 1423121 672241. 441494. 839043. 1115896 3033725 3499981 3824061 26 4511652 3841854 3348937 3271251 1471894 695288. 456625. 867798. 1153312 3137696 3619932 3813746 21 4674127 3825288 3336167 3260518 1524981 720318. 473069. 899050. 1194846 3250692 3750294 3800717 22 4846553 4179282 3647842 3563756 1581153 746891. 498520. 932215. 1238923 3370608 3888640 4149380 23 5825717 4656009 4067396 3830185 1639604 774581. 588653. 966677. 1284722 3495211 4032393 4405771 24 5877853 4020555 3511882 3434984 1699165 882636. 527131. 1081792 1331391 3622178 4178874 3999544 ANNUAL 1E+88 = 9E+87 = SE+7— 7E+O7 «= SE+O7 «= 2E+O7 = TE+O7 «= 2E+07 «= SE+O7 «= EHO? «= SEO? «= SEVO7«-2.14E+10 FUEL OIL CONSUMPTION DISPLACED (GALLONS) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC ANNUAL 31244 28545 24688 22786 10466 4941 3245 6167 = 8196». 22298 «= 25358 = 26361 214,208 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 1 CONCEPT 4 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: KOTZEBUE Date:March 38, 1998 Heat rate: 2458 Btu/kwh produced System loss: 532,408 Btu/hour (FOR ALL SYSTEMS CONNECTED) Total Gen.: 16,981,066 kwh/year Assumed diurnal heat Power plant monthly generation: demand variation: ase w eens Monthly JAN FEB MAR APR MAY JUN JUL AUG SEP oct Nov DEC CHECKSUM Fraction:8.18949 8.09033 8.07926 6.07668 6.08466 6.06706 6.06515 0.08481 0.07595 6.08610 6.09208 0.08834 1 Winte Summer Hour Kwh: 1859386 1534812 1346042 1382175 1437727 1138857 1166447 1440325 1289874 1462201 1563699 1500261 16981006 Diurnal 8.0494 6.0494 1 variation 8.038 6.038 08.038 6.038 6.045 6.045 6.045 6.045 6.045 8.045 0.038 06.038 6.0477 6.0477 2 6.036 6.036 6.036 6.036 6.040 6.040 6.040 6.040 6.040 0.040 0.036 06.036 8.0460 6.0460 3 8.034 0.034 6.034 6.034 6.036 8.036 8.036 8.036 0.036 0.036 0.034 0.034 8.0443 6.0443 4 8.034 6.034 6.034 6.034 6.035 6.035 6.035 6.035 6.035 6.035 6.034 6.034 6.0428 6.0428 5 8.033 6.033 6.033 6.033 6.035 6.035 6.035 6.035 6.035 8.035 8.033 0.033 6.0414 6.0414 6 9.034 6.034 6.034 6.034 6.038 6.038 6.038 6.038 6.038 6.038 6.034 6.034 6.0481 6.0401 ti 6.038 6.038 98.058 6.038 6.058 6.058 6.038 6.038 6.038 6.038 6.038 6.038 6.0398 08.0398 8 6.042 6.042 6.042 6.042 6.040 6.040 6.040 6.040 6.040 6.040 6.042 6.042 6.0381 9.0381 9 6.042 6.042 6.042 6.042 6.045 6.045 6.045 6.045 8.045 0.045 0.042 6.042 6.0374 6.0374 10 6.047 6.047 6.047 6.047 6.047 8.047 6.047 6.047 8.047 0.047 6.047 6.047 6.0378 6.0378 " 6.048 6.048 6.048 6.048 6.040 0.040 6.040 0.040 6.040 0.040 0.048 0.048 6.0367 6.0367 12 6.047 8.047 8.047 6.047 6.048 6.048 6.048 6.048 6.048 6.048 6.047 0.047 0.0367 6.0367 13 0.045 8.045 0.045 8.045 6.058 6.050 8.050 9.050 8.050 8.050 0.045 0.045 6.0378 6.0370 14 6.047 6.047 6.047 6.047 6.052 6.052 6.052 6.052 6.052 6.052 0.047 0.047 6.0374 6.0374 15 6.048 6.048 6.048 6.048 6.056 6.056 6.050 6.050 6.056 8.056 8.048 06.048 6.0381 8.0381 16 8.048 6.048 6.048 6.048 6.056 6.050 6.050 6.050 6.058 6.050 8.048 08.048 6.0398 6.0398 17 8.049 8.049 6.049 6.049 6.045 0.045 0.045 0.045 6.045 6.045 8.049 0.049 6.0481 6.8461 18 8.046 6.046 6.046 6.046 6.047 6.047 6.047 6.047 6.047 6.047 6.046 0.046 6.0414 6.0414 19 8.043 8.043 6.043 6.043 6.050 6.056 8.050 8.058 6.050 8.050 8.043 0.043 6.0428 6.0428 26 8.038 8.038 6.058 6.038 6.045 6.045 6.045 6.045 8.045 0.045 0.038 0.038 6.0443 6.0443 21 6.038 6.038 6.038 6.038 6.041 6.041 6.041 6.041 6.041 6.041 6.038 6.038 6.0460 6.0460 22 8.041 6.041 6.041 6.041 6.041 6.041 6.041 6.041 6.041 6.041 6.041 8.041 6.8477 6.0477 23 8.045 6.045 6.045 6.045 6.041 6.041 6.041 6.041 6.041 6.041 6.045 08.045 6.0494 8.0494 24 6.040 6.040 6.040 6.040 6.043 6.043 6.043 6.043 6.043 6.043 6.046 0.040 Building use per month, gallons of fuel oil KEA HEAT RECOVERY LOOP 3068 3111 2528 2118 391 185 121 238 1013 1854 2277 2571 19,451 HOSPITAL 14174 14418-11674 9808 5987 2828 1857 3538 4691 8585 10546 11918 108,000 SENIOR CENTER 3027 3877 2493 2094 1279 604 397 754 1682 1833 2252 2543 21,355 A.C. CO. STORE 1572 1599 1295 1688 664 314 206 392 528 952 1178 1321 11,093 KIC APTS 2105 = 21481734 1457 889 420 276 524 697 1275 = 1566 1769 14,852 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 2 PUBLIC WORKS WATER TREATMENT BUILDING ELEMENTARY SCHOOL MIDDLE SCHOOL HIGH SCHOOL ARMORY RECREATION CENTER TOTAL 2467 «2588 = 2832) 1787S 1842 492 323 614 817 1494 1836-2873 8717 8741 «8467 8281 599 283 186 353 469 8159 8355 8491 2268 «= 2386 = 1868 = 1569 958 452 297 565 751 1374 1687 =—-1985 3544 3683) «2919 2452—S:(1497 767 464 882.1173) 2146 = 2637-2977 5874 5972 4838 4064 2481 1172 769 «1463 1944 3558 = 4378 4935 43,748 44,356 37,328 32,528 15,396 7,272 4,775 9,077 12,064 29,376 34,419 37,924 Heat available per hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4661146 3657859 3177784 3168832 4614781 3565062 3457996 4658358 3977883 4465825 3883394 3641484 2 4379864 3427677 2975315 2911148 4038041 3187582 3613123 4671647 3464224 3887568 3644482 3414465 3 4096657 3197966 2772579 2713223 3577853 2741646 2657351 5608922 3054344 3426863 3485328 3187172 4 4113113 3214697 2786131 2724614 3463362 2650918 2568889 3494157 2955906 3319869 3417573 3200999 5 3978866 3186914 2698492 2630471 3465344 2651856 2569582 3495322 2961048 3328464 3303173 3093197 6 4142888 3244968 2810651 2745223 3814547 2927886 2837483 3844482 3277419 3690482 3439729 3226015 7 4754665 3752136 3254799 3173561 3816178 2928658 2837988 3845362 3281645 3698136 3952983 3720058 8 5364788 4257533 3697512 3600694 4049172 3112769 3816568 4878195 3493064 3940342 4464948 4212637 9 5373774 4266759 3704985 3606975 4629298 3571938 3462488 4658898 4815494 4534662 4471692 4228262 18 6129499 4891573 4252768 4136171 4861774 3755796 3648988 4891418 4225569 4774487 5186565 4838256 11 6283964 5819911 4365058 4244369 4051823 3114823 3817388 4079754 3499931 3952911 5236018 4955045 12 6136589 4898781 4258599 4141879 4978475 3847947 3730381 5007955 4331881 4896467 5111848 4836213 13 5837682 4651685 4041781 3931327 5216868 4031392 3988685 5239958 4539572 5131996 4859963 4594554 14 6134211 4896363 4256641 4139433 5441342 4214694 4086736 5471785 4746555 5366084 5118871 4834215 15 6279252 5815121 4361169 4241847 5209154 4038964 3988325 5239425 4537224 51277088 5232504 4951086 16 6272294 5888847 4355439 4236231 5288265 4050543 3988058 5238902 4534921 5123484 5227326 4945240 17 6412973 5122369 4456375 4334826 4628139 3571382 3462138 4658288 4012498 4529164 5346513 5058445 18 5952691 4740528 4122871 4812578 4858317 3754161 3639918 4889384 4216612 4758815 4960494 4686696 19 5498668 4356899 5786333 3689187 5204866 4828557 3986758 5236432 4524043 5103575 4573180 4313482 28 4727633 3724654 3232537 3154851 4623276 3569881 3460625 4655348 3999893 4506188 3932868 3697346 21 4712126 3788888 3219767 5144118 4158122 3261254 3185563 4198172 3579218 4825655 3921329 3684317 22 5144938 4062882 3531442 3447356 4156819 3288259 3182912 4188935 3573778 4015685 4286988 4032988 23 5726844 4539689 3958996 3855824 4153834 3199225 3182236 4187658 3568118 4005325 4777932 4501932 24 4960653 3984155 3394602 3318584 4383194 3381617 3279771 4418345 3778112 4236296 4135272 3883144 1E+88 1E+88 9 9E+87 «SEO? = 1E+@8 = SE+O7 «= SE+O7 = 1E+@8 = SE+O7 «= TE+O8 = TE+O8 = TE +08 Heat demand by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 7186683 7285369 6862413 5282681 2568989 1181293 775678. 1474584 1959725 4771957 5591162 6160529 2 6857497 6952881 5849988 5897508 2413322 1139885 748481. 1422819 1891831 4684686 5395177 5944585 3 6613031 6784937 5641362 4915785 2327288 1699249 721798. 1372896 1823617 4440532 5282841 5732664 4 6377759 6466396 5448659 4748896 2244498 1068141 696118. 1323281 1758738 4282551 5817748 55287135 5 6156065 6241628 5251539 4576108 2166471 1823298 671921. 1277283 1697603 4133687 4843320 5336532 6 5952677 6034797 5877523 4424466 2094682 989382. 649656. 1234959 1641351 3996713 4682832 5159708 7 5769595 5849788 4921855 4288819 2038463 959849. 629738. 1197897 1591838 3874188 4539263 5801512 8 5612626 5696814 4787432 4171685 1975088 932856. 612539. 1164403 1547577 3768371 4415298 4864914 9 5482286 5558477 4676768 4875248 1929351 911291. 598379. 1137485 1511881 3681257 4313221 4752458 16 5382818 5457619 4591988 4001382 1894343 894756. 587522. 1116845 1484378 3614468 4234958 4666217 11 5315445 5389317 4534433 3951226 1878636 883558. 580169. 1182868 1465793 3569226 4181958 4667820 CONCEPT 4 17,405 61,181 16,088 25,001 41,448 308,247 ANNUAL 3.58E+18 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 3 CONCEPT 4 12 5281445 5354846 4505438 3925953 1858671 877906. 576458. 1895814 1456417 3546396 4155209 4578347 13 5281445 5354846 4505430 3925953 1858671 877906. 576458. 1895814 1456417 3546396 4155209 4578347 14 5315445 5389318 4534433 3951226 1870636 883558. 580169. 1182868 1465793 3569226 4181958 4607820 15 5382818 5457619 4591988 4001302 1894343 894756. 587522. 1116845 1484378 3614460 4234958 4666217 16 5482286 5558478 4676768 4675248 1929351 911291. 598379. 1137485 1511861 3681257 4313221 4752451 17 5612828 5696615 4787432 4171685 1975888 932856. 612539. 1164483 1547577 3768371 4415298 4864914 18 5769596 5849788 4921855 4288819 2850463 959849. 629739. 1197897 1591838 3874188 4539264 5001512 19 5952877 6834798 5877524 4424466 2894682 989382. 649656. 1234959 1641351 3996713 4682832 5159708 28 6156865 6241621 5251539 4576188 2166471 1623298 671921. 1277283 1697683 4133687 4843321 5336532 21 6377768 6466396 5440668 4748897 2244491 1868141 696118. 1323281 1758738 4282552 5817748 5528714 22 6613832 6784938 5641363 4915785 2327289 1699249 721798. 1372696 1823617 4440532 5262842 5732664 23 6857498 6952882 5849989 5897589 2415322 1139885 748481. 1422819 1891831 4604687 5395177 5944586 24 7186604 7285378 6862413 5282682 2588989 1181295 775678. 1474585 1959725 4771957 5591163 6160530 ANNUAL 1E+88 = =1E+88 «= 1E+88 «= 1E+8 «= SE+O7 «=. 2E+07 «= 2E+07 «= SE+O7 «= 4E+O7 = 1E+88 «= TE+O8 = 1E+O8 «3. O8E+10 Heat delivered by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4661146 3657059 3177784 3188832 2500989 1181293 775670. 1474504 1959725 4465825 3883394 3641484 2 4379864 3427677 2975315 2911148 2413322 1139885 748481. 1422819 1891831 3887568 3644482 3414465 3 4896657 3197966 2772579 2713223 2327288 1899249 721798. 1372896 1823617 3426863 3405328 3187172 4 4113113 3214697 2786131 2724614 2244498 1060141 696118. 1323281 1758738 3319869 3417573 3200999 5 3978866 3106914 2690492 2630471 2166471 1623298 671921. 1277283 1697683 3328464 3303173 3093197 6 4142888 3244968 2810651 2745223 2094682 989382. 649656. 1234959 1641351 3698482 3439729 3226015 7 4754665 3752136 3254799 3173561 2038463 959849. 629738. 1197897 1591838 3698136 3952983 3720058 8 5364788 4257533: 3697512 3600694 1975868 952856. 612539. 1164403 1547577 3768371 4415298 4212637 9 5373774 4266759 3764985 3606975 1929351 911291. 598379. 1137485 1511881 3681257 4313221 4228262 16 5382818 4891573 4252768 48613082 1894343 894756. 587522. 1116845 1484376 3614468 4234958 4666217 11 5315445 5619911 4365058 3951226 1878636 883558. 580169. 1102868 1465793 3569226 4181958 4607820 12 5281445 4898781 4258599 3925953 1858671 877986. 576458. 1695814 1456417 3546396 4155209 4578347 13 5281445 4651685 4041781 3925953 1858671 877906. 576458. 1695814 1456417 3546396 4155209 4578347 14 5315445 4896363 4256641 3951226 1870636 883558. 580169. 1102868 1465793 3569226 4181958 4607820 15 5382818 5615121 4361169 4001302 1894343 894756. 587522. 1116845 1484370 3614460 4234958 4666217 16 5482286 5688047 4355439 4875248 1929351 911291. 598379. 1137485 1511881 3681257 4313221 4752451 17 5612628 5122369 4456375 4171685 1975088 932856. 612539. 1164483 1547577 3768371 4415290 4864914 18 5769596 4748528 4122871 4612578 2030463 959049. 629739. 1197097 1591038 3874188 4539264 4686696 19 5498668 4356899 3786333 3689187 2894682 989382. 649656. 1234959 1641351 3996713 4573180 4313482 28 4727633 3724654 3232537 3154851 2166471 1623298 671921. 1277283 1697683 4133687 3932868 3697346 21 4712126 3788888 3219767 3144118 2244491 1068141 696118. 1323281 1758738 4825655 3921329 3684317 22 5144938 4862882 3531442 3447356 2327289 1099249 721798. 1372896 1823617 4015685 4286900 4032980 23 5726844 4539609 3950996 3855824 2413322 1139885 748481. 1422819 1891831 4605325 4777932 4581932 24 4968653 3984155 3394602 3318584 2500989 1181293 775670. 1474505 1959725 4238296 4135272 3883144 | ANNUAL 1E+68 = 1E+08 = 9E+O7 = SE+87 «0 SE+07 «= 2E+07 «0 2E+07) SE+07 «= 4E+07 «= SE+O7 «= 1E+O8 = 1E+O8 «2. 55E+10 FUEL OIL CONSUMPTION DISPLACED (GALLONS) JAN FEB MAR APR MAY JUN JUL AUG SEP oct NOV DEC ANNUAL, 36641 38623 26604 25504 15396 987272 «= 4775 = 9877 12864 = 27517 «29755 «29823 = 255,052 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 1 CONCEPT 5 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: KOTZEBUE Date:March 38, 1998 Heat rate: 2458 Btu/kwh produced System loss: 586,468 Btu/hour (FOR ALL SYSTEMS CONNECTED) Total Gen.: 16,981,086 kwh/year Assumed diurnal heat Power plant monthly generation: demand variation: SEV Monthly JAN FEB) oMAR = APR)sMAY. = JUN JUL-Ss«AUG-=SsSEP = OCT.-—«SsNOV. CDEC. CHECKSUM Fraction:8.16949 6.69833 6.07926 6.67668 6.08466 0.66706 6.86515 6.68481 6.87595 6.68618 6.69288 6.08834 1 Winte Summer Hour Kwh: 1859386 1534812 1346842 1362175 1437727 1138857 1186447 1448325 1289874 1462281 1563699 1520261 16981206 Diurnal 6.0494 6.0494 1 variation 6.638 6.838 6.038 6.038 6.045 6.045 6.045 6.045 6.045 6.045 6.038 6.038 6.0477 6.6477 2 6.056 6.036 6.036 6.056 6.040 6.046 6.046 6.040 6.040 6.048 6.036 6.036 6.0466 6.0460 » 6.034 6.034 6.034 6.034 6.036 6.036 8.036 8.036 08.036 6.036 6.034 6.034 6.0443 6.0443 4 6.034 6.034 6.034 6.034 6.035 6.035 6.035 6.035 6.035 6.035 6.034 6.034 6.0428 6.6428 5 6.033 6.033 6.033 6.033 6.035 6.035 6.055 6.035 6.035 8.035 6.033 6.033 6.0414 6.0414 6 6.034 6.054 6.054 6.034 6.038 6.058 8.038 6.038 6.058 6.038 8.034 6.034 6.0461 6.6401 7 6.038 6.058 6.058 6.058 6.058 6.058 6.058 6.038 6.038 6.038 6.038 6.038 6.0398 6.0398 8 6.042 6.042 6.042 6.042 6.046 6.046 6.040 6.046 6.046 6.040 6.042 06.042 6.0381 6.0381 9 6.642 6.042 6.042 6.042 6.045 6.045 6.045 6.045 6.045 6.045 6.042 06.042 6.0374 6.0374 16 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 6.047 0.047 6.0376 6.6378 af] 6.048 6.048 6.048 6.048 6.046 6.046 6.046 6.046 6.040 6.040 06.048 0.048 6.0367 6.0367 12 6.047 6.047 6.047 6.047 6.048 6.048 6.048 6.048 6.048 6.048 6.047 6.047 6.0367 6.0367 13 6.045 6.045 6.045 6.045 6.056 6.056 8.058 6.058 6.056 6.050 6.045 6.045 6.0378 8.0378 14 6.647 6.047 6.647 6.047 6.052 6.052 6.052 6.052 6.052 6.052 6.047 6.047 6.8374 6.8374 15 6.048 6.048 6.048 6.048 6.058 6.050 6.056 6.058 6.050 6.050 6.048 6.048 6.0381 6.6381 16 6.048 6.048 6.048 6.048 6.058 6.050 8.050 8.058 6.050 6.050 6.048 0.048 6.03968 8.0398 17 6.049 6.049 6.049 6.049 8.045 6.045 6.045 6.045 6.045 6.045 6.049 6.049 6.6401 6.0401 18 6.046 6.046 6.046 6.046 6.047 6.047 6.647 6.047 6.047 6.047 6.046 8.046 6.0414 6.0414 19 6.0435 6.043 6.043 6.043 6.056 6.056 6.056 6.056 6.056 6.050 6.043 9.043 6.0428 6.6428 28 6.658 68.838 6.038 6.058 6.045 6.645 6.645 6.645 6.045 6.045 6.038 9.038 6.0443 6.0443 21 6.038 6.058 6.038 68.058 6.041 6.041 6.641 6.041 6.041 6.041 6.038 9.938 6.0468 6.0468 22 6.041 6.041 6.041 6.041 6.041 6.041 6.041 6.641 6.641 6.041 6.041 6.041 6.0477 6.0477 23 6.045 6.045 6.045 6.045 6.041 6.041 6.041 6.041 6.041 6.041 6.045 8.045 6.0494 6.0494 24 6.040 6.040 6.046 6.046 6.045 6.045 6.043 6.043 6.043 6.043 6.040 06.048 Building use per month, gallons of fuel oil KEA HEAT RECOVERY LOOP 3066 3111 2526 2118 391 185 121 238 1613 1854 2277 2571 19,451 HOSPITAL 14174 14418-11674 9888 = 5987 2828 1857 3538 4691 8585 10546 11918 108,000 SENIOR CENTER 3627 38677 = 2493 2894 1279 604 397 754 1662 1833 2252 2543 21,355 A.C. CO. STORE 1572 1599 1295 1688 664 314 206 392 526 952 1176 1321 11,093 KIC APTS 2105 2148 1734 1457 889 428 276 524 697 1275 1566 1769 14,852 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 2 PUBLIC WORKS WATER TREATMENT BUILDING ELEMENTARY SCHOOL MIDDLE SCHOOL HIGH SCHOOL ARMORY RECREATION CENTER TOTAL 2467 «2588 = 2832) «1787S 1842 492 323 614 817 1494 1836 = 2873 8717 8741 8467 8.281 599 283 186 353 469 8159 8355 8491 2268 «89-2386 «= 1868 =: 1569 958 452 297 565 751 1374 1687) 1985 3544 368329192452 1497 767 464 882.0 «1173 2146-2637) 2977 5874 5972 4838 49 4864 2481 1172 769 «1463 = 1944 3558 = 4378) 4935 3124 «31762575 2161 1319 623 409 778 «= 1834-1892 2324 = 2624 132313450 1098 915 559 264 173 329 438 801 9841111 48,195 48,877 46,963 35,596 17,274 8,159 5,357 16,184 13,536 32,069 37,727 41,659 Heat available per hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4613146 3689059 3129784 3868832 4566781 3517862 3489996 4682358 3929883 4417825 3835394 3593484 2 4331864 3379677 2927315 2863148 3996841 3059582 2965123 4623647 3416224 3839568 3596482 3366465 3 4048657 3149966 2724579 2665223 3529053 2693646 2609351 3560922 3806344 3378863 3357328 3139172 4 4065113 3166697 2738131 2676614 3415362 2602918 2520889 3446157 2987986 3271869 3369573 3152999 5 3938866 3058914 2642492 2582471 3417344 2603856 2521582 3447322 2913848 3280464 3255173 3045197 6 4894888 3196968 2762651 2697223 3766547 2879886 2789403 3796482 3229419 3642482 3391729 3178015 7 4706665 3764136 3206799 3125561 3768178 2888658 2789988 3797362 3233645 3650136 3964983 3672058 8 5316786 4269533 3649512 3552694 4061172 3864769 2968568 4038195 3445064 3892342 4416948 4164637 9 5325774 4218759 3656985 3558975 4581298 3523938 3414488 46108898 3967494 4486662 4425692 4172262 18 6881499 4843573 4204766 4088171 4813774 3787796 3592988 4843418 4177569 4726407 5858565 4782256 11 6235964 4971911 4317058 4196389 4003823 3066023 2969388 4831754 3451931 3984911 5188810 4987045 12 6888589 4858781 4218599 4093879 4930473 3799947 3682381 4959953 4283801 4848467 5863848 4788213 13 5789682 4603685 3993781 3883327 5162068 5983392 5860685 5191958 4491572 5883996 4811963 4546554 14 6886211 4848363 4288641 4891433 5393342 4166694 4038736 5423785 4698555 5318884 5862871 4786215 15 6231252 4967121 4313169 4193847 5161154 3982964 3868325 5191425 4489224 5879708 5184504 4903086 16 6224294 4960647 4367439 4188231 5168265 3982543 3860058 5198982 4486921 5875484 5179326 4897240 17 6364973 5674369 4488375 4286826 4588139 3523382 3414138 4618288 3964498 4481164 5298513 5010445 18 5984691 4692528 4874871 3964578 4816317 3706161 3591918 4841384 4168612 4718815 4912494 4638696 19 5442668 4388899 3738333 3641187 5156066 5980557 3858758 5188432 4476043 5855575 4525188 4265482 26 4679633 3676654 3184537 3106851 4575276 3521881 3412625 4607548 3951895 4458108 3884868 3649346 21 4664126 3668888 3171767 3096118 4118122 3153254 3855563 4142172 3531218 3977655 3873329 3636317 22 5896938 4614882 3483442 3399356 4188819 3152259 3054912 4148935 3525776 3967685 4238908 3984980 23 5678844 4491689 3962996 3807624 4185854 3151225 3054236 4139658 3528118 3957325 4729932 4453932 24 4912653 3856155 3346682 3270584 4335194 3333617 3231771 4370345 3722112 4182296 4887272 3835144 1E+88 1E+68 9E+O7 S8E+O7 1E+88 B8E+O7 S8E+O7 1E+08 SE+O7 1E+#8 1E+#8 1E+08 Heat demand by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 7828992 7939779 6657445 5782359 2886859 1325381 878212. 1654338 2198843 5289419 6128527 6767258 2 7554564 7661467 6424883 5579671 2787698 1278922 839789. 1596341 2121767 5826814 5913785 6530046 3 7285248 7388348 6195068 5380759 2611178 1233338 889774. 1539432 2046127 4847611 5762885 6297254 4 7626861 7125486 5974666 5189328 2518275 1189451 788965. 1484664 1973332 4675148 5499994 6873216 5 6781831 6877799 5766983 5688944 2438736 1148185 753818. 1433056 1984738 4512637 5388811 5862108 6 6557187 6649896 5575888 4842967 2350191 1110862 728839. 1385570 1841622 4363185 5132897 5667868 7 6356877 6446821 5404946 4694489 2278138 1876829 706494. 1343891 1785161 4229339 4975531 5494093 8 6182484 6269971 5257324 4566276 2215919 1846641 687199. 1386409 1736406 4113831 4839642 5344042 9 6039562 6125827 5135789 4468717 2164695 1822446 671313. 1276289 1696265 4818738 4727763 5220502 18 5929974 6813888 5842608 4379777 2125415 1883895 659132. 1253852 1665486 3945818 4641978 5125776 11 5855761 5938625 4979493 4324965 2098815 991338. 658883. 1237378 1644643 3896429 4583884 5861628 CONCEPT 5 17,405 61,101 16,608 25,081 41,448 22,037 9,332 339,616 ANNUAL 3.54E+10 KOTZEBUE WASTE HEAT RECOVERY ESTIMATION PAGE 3 CONCEPT 5 12 5818386 5968646 4947643 4297381 2685391 984989. 646719. 1229456 1634123 3871586 4554564 5829252 13 5818386 5986646 4947643 4297301 2685391 984989. 646719. 1229456 1634123 3871586 4554564 5629252 14 5855762 5938626 4979493 4324965 2898815 991338. 650885. 1237378 1644643 3896429 4583884 5061628 15 5929974 6813889 5842681 4379777 2125415 1883893 659132. 1253052 1665486 3945811 4641978 5125777 16 6839562 6125827 5135798 4468717 2164693 1622446 671313. 1276289 1696265 4018731 4727764 5220583 17 6182484 6269972 5257324 4566277 2215919 1846641 687199. 1386489 1736406 4113831 4839643 5344042 18 6356877 6446821 5464941 4694489 2278138 1876629 766494. 1343891 1785161 4229348 4975531 5494093 19 6557168 6649897 5575889 4842967 2358191 1110662 728839. 1385578 1841622 4363106 5132898 5667861 28 6781831 6877808 5766984 5008944 2430756 1148105 753818. 1433056 1984738 4512637 5308811 5862108 21 7626861 7125486 5974667 5189328 2518273 1189452 788965. 1484664 1973332 4675148 5499994 6073217 22 7285249 7388341 6195669 5388759 2611171 1233338 889774. 1539433 2846127 4847611 5762886 6297254 23 7554565 7661468 6424884 5579672 2767699 1278923 839789. 1596341 2121767 5826815 5913766 6530047 24 7828993 7939788 6657446 5782368 2886059 1325381 878213. 1654338 2198843 5209419 6128528 6767258 ANNUAL 2E+68 4 2E+08 1E+O8 1E+08 6E+O7 SE+O7 2E+07 3E+O7 9 4E+07 «= 1E+#8 «= IE+@8 = 1E+08 3. 40E+108 Heat delivered by hour by month (BTU) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC 1 4613146 3689859 3129784 3866832 2866059 1325381 876212. 1654338 2198843 4417825 3835394 3593484 2 4331864 3379677 2927315 2863148 2787698 1278922 839789. 1596341 2121767 3839568 3596482 3366465 3 4848657 3149966 2724579 2665223 2611176 1233338 869774. 1539432 2646127 3378863 3357328 3139172 4 4865113 3166697 2738131 2676614 2518273 1189451 788965. 1484664 1973332 3271869 3369573 3152999 5 3938866 3058914 2642492 2582471 2438736 1148105 753818. 1433056 1984738 3288464 3255173 3045197 6 4894888 3196968 2762651 2697223 2356191 1118862 728839. 1385576 1841622 3642462 3391729 3178015 7 4786665 3764136 3266799 3125561 2278138 1676829 766494. 1343891 1785161 3658136 3964983 3672058 8 5316786 4289533 3649512 3552694 2215919 1846641 687199. 1386489 1736486 3892342 4416948 4164637 9 5325774 4218759 3656985 3558975 2164693 1622446 671313. 1276289 1696265 4618738 4423692 4172262 18 5929974 4843573 4264768 4888171 2125415 1683893 659132. 1253052 1665486 3945818 4641978 4782256 11 5855761 4971911 4317058 4196389 2698815 991338. 650883. 1237378 1644643 3896429 4583884 4907045 12 5818386 4858781 4218599 4093879 2685391 984989. 646719. 1229456 1634123 3871506 4554564 4788213 13 5789682 4683685 3993781 3883327 2885391 984989. 646719. 1229456 1634123 3871506 4554564 4546554 14 5855762 4848363 4288641 4891433 2898815 991338. 650883. 1237378 1644643 3896429 4583884 4786215 15 5929974 4967121 4313169 4193847 2125415 1883893 659132. 1253052 1665486 3945811 4641978 4903086 16 6839562 4968847 4387439 4188231 2164693 1822446 671313. 1276289 1696265 4818731 4727764 4897240 17 6182484 5874369 4488375 4286826 2215919 1046641 687199. 1306409 1736406 4113831 4839643 5010445 18 5984691 4692528 4874071 3964576 2278138 1676829 706494. 1343891 1785161 4229348 4912494 4638696 19 5442668 4388899 3738333 3641187 2556191 1118862 728839. 1385578 1841622 4363186 4525188 4265482 26 4679633 3676654 3184537 3186851 2438736 1148185 753818. 1433856 1984738 4458108 3884868 3649346 21 4664126 3668888 3171767 3696118 2518273 1189452 788965. 1484664 1973332 3977655 3873329 3636317 22 5896958 4014882 3483442 3399356 2611171 1233338 889774. 1539433 2046127 3967685 4238908 3984980 23 5678844 4491689 3982996 3887624 2767699 1278923 839789. 1596341 2121767 3957325 4729932 4453932 24 4912653 3856155 3346682 3270584 2806059 1325381 876213. 1654338 2198843 4182296 4087272 3835144 ANNUAL 1E+88 = 1E+88 «= SE+87 = BE+O7 «= GE+O7 «= SE+O7 «= 2E+87 «= SE+O7 «= 4E+O7 «= (SE+O7 «= 1E+O8 «= 1E+O8 «2.64E+10 FUEL OIL CONSUMPTION DISPLACED (GALLONS) JAN FEB MAR APR MAY JUN JUL AUG SEP ocT NOV DEC ANNUAL 37786 «= 38272 «= 26254 «25588 «17274 «= 8159) 45357 18184 = 13536 §=— 28621 38783 «= 29985) -263,711 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Contact Names The following people were contacted in the field: Dan Coffey, Director of Maintenance - NW Arctic School Dist. (442-3476) Paul Weisner, Asst. Director of Maintenance - NW Arctic School Dist. (442-3476) Dave Foster, Maintenance Department - NW Arctic School Dist. (442-3476) Craig Thompson, P.E. - Thompson Engineering (694-9339) Glen Pomeroy, P.E. - Mechanical Engineer for KEA (265-8430) Brad Reeve, General Manager - KEA (442-3491) Chuck Vowell, Maintenance Director Alaska Commercial Co. (276-2226) Ken Sturdevan, Kotzebue A.C. Co. Manager (442-3285) Steve Weaver, Engineer - Public Health Service (27 1-4700) Caleb Pungowiyi, Asst. City Manager (442-3401) Bruce Kovarik, Vice President, Operations - Manilaaq Corp. (442-3311) Paul Hanson, Senior Center Director - Manilaaq Corp. (442-3311) Terry Adams, Maintenace Director - Manilaaq Corp. (442-2529) Frank Stein, President - KIC (Kikiktagruk Inupiat Corp.) (442-3165) Major Lamont, Supply Officer - Kotzebue Armory (442-3447) Roger Patch, State of Alaska Facilities (Armory) (428-1828) KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Cost Estimates SIMPLE ECONOMIC SUMMARY COST SUMMARY CONCEPT 1 $661,491 $0 $178,603 $840,094 CONCEPT 2 $1,183,115 $0 $319,441 | $1,502,556 CONCEPT 3 $1,655,070 $0 $446,869} $2,101,939 CONCEPT 4 $2,721,348 $0 $734,764 | $3,456,112 CONCEPT 5 $2,950,288 $0 $796,578 | $3,746,866 FUEL OIL SAVINGS SUMMARY CONCEPT $1.320 $1.000 $1.000 |$ SAVINGS CONCEPT 1 100,000 0 0 $132,000 CONCEPT 2 147,300 0 0) $194,436 CONCEPT 3 214,200 0 0 $282,744 CONCEPT 4 255,052 0 0 $336,669 CONCEPT 5 263,711 0 0 $348,099 SIMPLE PAYBACK SUMMARY i COST SAVINGS SAVINGS PAYBACK CONCEPT 1 $840,094 100,000 $132,000 6.4 CONCEPT 2 $1,502,556 147,300 $194,436 7.7 CONCEPT 3 $2,101,939 214,200 $282,744 7.4 CONCEPT 4 $3,456,112 255,052 $336,669 10.3 CONCEPT 5 $3,746,866 263,711 $348,099 10.8 NOTE: to simplify the cost savings calculations, all buildings were assumed to use $1.32/gallon fuel oil. This will be slightly conservative. Payback does not include operating or maintenance costs. “ims S029 CONSTRUCTION COST STUDY WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA Cost Consultant Engineer HMS, Inc. FPE Consulting Engineers 4103 Minnesota Drive 560 East 34th Avenue Anchorage, Alaska 99503 Anchorage, Alaska 99503 (907) 561-1653 March 29, 1990 (907) 562-0420 FAX WASTE HEAT RECOVERY SYSTEM PAGE 1 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 NOTES REGARDING THE PREPARATION OF THIS COST ESTIMATE This study has been prepared from twenty-nine (29) 8 1/2"x11" sketches and narratives linking thirteen (13) buildings. There are five (5) concepts for this study. The estimate is priced using A.S. Title 36 prevailing labor rates and current materials and equipment prices to reflect a competitively bid date of Spring 1991. This is a statement of probable construction cost only and excludes the following costs. 1. A/E fees 2. Administrative costs 3. Cost for any other remodel work 4. Cost of asbestos abatement, if found in existing pipes/equipment WASTE HEAT RECOVERY SYSTEM PAGE 2 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 GENERAL COST SUMMARY CONCEPT y “HA or #2 or #3 or #4 or #5 oe (Bldg 1-3) (Bldg 1-6) (Bldg 1-8) (Bldg 1-11) (Bldg 1-13) 1. Arctic Pipes and Loops ay 333,819 \.N\.643;,85% 917,638 1,545,685 1,675,710 2. Power Plant Modifications he i 897385. 91,285 \.._ 92,185 95 bs 5 100,185 3. Hospital Modifications Pf 21585 N2585 oN 217585 24,50 21,585 4. Senior Center Modifications’ - ue 0 197440 \19,440 19,440 19,440 5. ASC, Co. Store Modifications o 0 8,076 “@,076 8,076 8,076 6. KIC Apartment Modifications Y LP ON: 11,289. 117289 11,289 11,289 7. Public Works Modifications ‘ Cece Oey, Os, 1277189 12,789 12,789 8. Water Treatment Modifications a Ou er. 29,874 29,874 29,874 9. Elementary School Modifications 0/7 O° Tak 28,894 28,894 10. Middle School Modifications 0 0 Te 0 24,040 24,040 11. High School #1 Modifications 0 0 we 0 33,040 33,040 12. Armory Modifications Ou O77 0 0 10,789 13. Recreation Center Modifications 0 es Oo” 0 0 8,076 SUBTOTAL - ~~ \ 444,789" 795 532 °47112,876 17829847. 1,983,787 14. General Conditions, Overhead , of: and Profit (30%) 133,437 “ 238,660 333,863 548,954 595,136 15. Contingencies (10%) 57,823 103,419 144,674 237,880 257,892 16. Escalation to April 1991 Bid Date (4%) 25,442 45,504 63,657 104,667 4:1:35,.473 ANTICIPATED CONSTRUCTION COST: 661,491 1,183,115 1,655,070 2,721,348 2,950,288 WASTE HEAT RECOVERY SYSTEM PAGE 3 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 13290 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 1 (BUILDING 1 and 3) Supply and return arctic pipe and expansion loops comprising: 12" steel carrier pipe, 2" insulation surround and 16" PVC jacket pipe (2) oa LF 128.50 0 Ditto 10" SCP, 2" insulation and 14" PVC JP (2) = LF 97.00 0 Ditto 8" SCP, 2" insulation and 12" Pvc JP (2) —— LF 79 .80 0 Ditto 6" SCP, 2" insulation and 10" PVC JP (2) 4,112 LF 61.50 252,888 Ditto 5" SCP, 2" insulation and 9" PVC JP (2) -- LF 57.00 0 Ditto 4" SCP, 2" insulation and 8" PVC JP (2) ae LF 48.50 0 WASTE HEAT RECOVERY SYSTEM PAGE 4 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 1 (BUILDING 1 and 3) Supply and return arctic pipe and expansion loops comprising: (Continued) 3" steel carrier pipe, 2" insulation Surround and 7" PVC jacket pipe (2) -- LF 41.00 0 2 1/2" SCP, 2" insulation and 6 1/2" PVC JP (2) a LF 38.50 0 16" arctic pipe bend/tee for 12" pipe and loop -- EA 985.00 0 14" ditto for 10" ditto -- EA 870.00 0 12" ditto for 8" ditto ae EA 740.00 0 10" ditto for 6" ditto 52 EA 520.00 27,040 9" ditto for 5" ditto ~— EA 435.00 0 WASTE HEAT RECOVERY SYSTEM PAGE 5 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 1 (BUILDING 1 and 3) 8" arctic pipe bend/tee for 4" pipe and loop - EA 340.00 0 7" ditto for 3" ditto — EA 285.00 0 6 1/2" ditto for 2 1/2" ditto -- EA 225.00 0 Connect arctic pipes to buildings 4 EA 165.00 660 Excavate, backfill and dispose for arctic pipe trench (1) 1,900 LF 1Sia25) 28,975 Ditto expansion loop at 300'0" o/c (6) 156 LF 15225 2,379 48" wide x 4" thick rigid insulation under pipes 7,600 SF 2.10 15,960 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT ONIT RATE PAGE 6 MARCH 29, 1990 ESTIMATED COST CONCEPT NO. 1 (BUILDING 1 and 3) 48" wide x 4" thick rigid insulation at loops 42" diameter half CMP steel culvert at 16" arctic pipe mounted on steel pipe frame at loops ( ) 36" ditto for 14" and 12" arctic pipe () 30" ditto for 10" and 18" arctic pipe (6) 24" ditto for 7" and 6 1/2" arctic pipe ( 604 SF LF LF LF LF 2.10 35 .00 32.50 29.80 22.50 1,268 4,649 WASTE HEAT RECOVERY SYSTEM PAGE 7 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 (BUILDING 1-3, 4, 5 and 6) Supply and return arctic pipe and expansion loops comprising: 12" steel carrier pipe, 2" insulation surround and 16" PVC jacket pipe (2) -- LF 128.50 0 Ditto 10" SCP, 2" insulation and 14" Pvc JP (2) -- LF 97.00 0 Ditto 8" SCP, 2" insulation and 12" PVC JP (2) 3,712 LF 79 .80 296,218 Ditto 6" SCP, 2" insulation and 10" PVC JP (2) 1,404 LF 61.50 86,346 Ditto 5" SCP, 2" insulation and 9" Pvc JP (2) 1,184 LF 57.00 67 ,488 Ditto 4" SCP, 2" insulation and 8" Pvc Jp (2) 632 LF 48 .50 30,652 WASTE HEAT RECOVERY SYSTEM PAGE 8 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 (BUILDING 1-3, 4, 5 and 6) Supply and return arctic pipe and expansion loops comprising: (Continued) 3" steel carrier pipe, 2" insulation surround and 7" PVC jacket pipe (2) 240 LF 41.00 9,840 2 1/2" SCP, 2" insulation and 6 1/2" PVC JP (2) = LF 38.50 0 16" arctic pipe bend/tee for 12" pipe and loop -- EA 985.00 0 14" ditto tor 10" ditto te EA 870.00 0 12" ditto for 8" ditto 48 EA 740.00 35,520 10" ditto for 6" ditto 20 EA 520.00 10,400 9" ditto for 5" ditto 28 EA 435.00 12,180 WASTE HEAT RECOVERY SYSTEM PAGE 9 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 (BUILDING 1-3, 4, 5 and 6) 8" arctic pipe bend/tee for 4" pipe and loop - EA 340.00 0 7" ditto for 3" ditto i EA 285.00 0 6 1/2" ditto for 2 1/2" ditto -- EA 225.00 0 Connect arctic pipes to buildings 10 EA 165.00 1,650 Excavate, backfill and dispose for arctic pipe trench (1) 3,300 LF 15.25 50,325 Ditto expansion loop at 300'0" o/c (11) 286 LF 15.25 4,362 48" wide x 4" thick rigid insulation under pipes 13,200 SF 2.10 27,720 TOTAL ESTIMATED COST: WASTE HEAT RECOVERY SYSTEM PAGE 1U KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 (BUILDING 1-3, 4, 5 and 6) 48" wide x 4" thick rigid insulation at loops 1,144 SF 2.10 2,402 42" diameter half CMP steel culvert at 16" arctic pipe mounted on steel pipe frame at loops ( ) -- LF 35.00 0 36" ditto for 14" and 12" arctic pipe (6) 156 LF 32-50 5,070 30" ditto for 10" and 18" arctic pipe (4) 104 LF 29 .80 3,099 24" ditto for 7" and 6 1/2" arctic pipe Ci} 26 LF 22.50 585 TOTAL ESTIMATED COST: 643,857 WASTE HEAT RECOVERY SYSTEM PAGE 11 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 (BUILDING 1-6, 7 and 8) Supply and return arctic pipe and expansion loops comprising: 12" steel carrier pipe, 2" insulation surround and 16" PVC jacket pipe (2) -- LF 128.50 0 Ditto 10" SCP, 2" insulation and 14" PVC JP (2) 3,556 LF 97.00 344,932 Ditto 8" SCP, 2" insulation and 12" PVC JP (2) 952 LF 79 .80 75,970 Ditto 6" SCP, 2" insulation and 10" Pvc JP (2) 3,836 LF 61.50 235,914 Ditto 5" SCP, 2" insulation and 9" Pvc JP (2) =< LF 57.00 0 Ditto 4" SCP, 2" insulation and 8" PVC JP (2) 706 LF 48.50 34,241 WASTE HEAT RECOVERY SYSTEM PAGE 12 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 (BUILDING 1-6, 7 and 8) Supply and return arctic pipe and expansion loops comprising: (Continued) 3" steel carrier pipe, 2" insulation surround and 7" PVC jacket pipe (2) 240 LF 41.00 9,840 2 1/2" SCP, 2" insulation and 6 1/2" PVC JP (2) a LF 38.50 0 16" arctic pipe bend/tee for 12" pipe and loop -- EA 985.00 0 14" ditto for 10" ditto 50 EA 870.00 43,500 12" ditto for 8" ditto 18 EA 740.00 13,320 10" ditto for 6" ditto 50 EA 520.00 26,000 9" ditto for 5" ditto 12 EA 435 .00 5,220 WASTE HEAT RECOVERY SYSTEM PAGE 13 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 (BUILDING 1-6, 7 and 8) 8" arctic pipe bend/tee for 4" pipe and loop -- EA 340.00 0 7" ditto for 3" ditto -- EA 285.00 0 6 1/2" ditto for 2 1/2" ditto —— EA 225.00 0 Connect arctic pipes to buildings 14 EA 165.00 2,310 Excavate, backfill and dispose for arctic pipe trench (1) 4,450 LF 15.25 67,863 Ditto expansion loop at 300'0" o/c (15) 390 LF 1S325 5,948 48" wide x 4" thick rigid insulation under pipes 17,800 SF 2.10 37,380 WASTE HEAT RECOVERY SYSTEM PAGE 14 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COsT CONCEPT NO. 3 (BUILDING 1-6, 7 and 8) 48" wide x 4" thick rigid insulation at loops 1,560 SF 2.10 31,276 42" diameter half CMP steel culvert at 16" arctic pipe mounted on steel pipe frame at loops ( ) -- LF 35 .00 0 36" ditto for 14" and 12" arctic pipe (7) 182 LF 32.50 5,915 30" ditto ror 10" and 18" arctic pipe (7) 182 LF 29.80 5,424 24" ditto for 7" and 6 1/2" arctic pipe (1) 26 LF 22.50 585 WASTE HEAT RECOVERY SYSTEM PAGE 15 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 (BUILDING 1-8, 9, 10 and 11) Supply and return arctic pipe and expansion loops comprising: 12" steel carrier’pipe, 2" insulation surround and 16" PVC jacket pipe (2) 4,482 LF 128.50 5/5793 Ditto 10" SCP, 2" insulation and 14" PVC JP (2) 3,190 LF 97.00 309,430 Ditto 8" SCP, 2" insulation and 12" Pvc JP (2) 686 LF 79.80 54,743 Ditto 6" SCP, 2" insulation and 10" Pvc JP (2) 2,870 LF 61.50 176,505 Ditto 5" SCP, 2" insulation and 9" PVC JP (2) 1,152 LF 57.00 65,664 Ditto 4" SCP, 2" insulation and 8" PVC JP (2) 706 LF 48 .50 34,241 WASTE HEAT RECOVERY SYSTEM PAGE 16 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 (BUILDING 1-8, 9, 10 and 11) Supply and return arctic pipe and expansion loops comprising: (Continued) 3" steel carrier pipe, 2" insulation surround and 7" PVC jacket pipe (2) 240 LF 41.00 9,840 2 1/2" SCP, 2" insulation and 6 1/2" Pvc JP (2) a LF 38.50 0 16" arctic pipe bend/tee for 12" pipe and loop 62 EA 985.00 61,070 14" ditto for 10" ditto 40 EA 870.00 34,800 12" ditto for 8” ditto 8 EA 740.00 5,920 10" ditto tor 6" ditto 44 EA 520.00 22,880 9" ditto for 5" ditto 16 EA 435.00 6,960 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT PAGE 17 MARCH 29, 1990 CONCEPT NO. 4 (BUILDING 1-8, 9, 10 and 11) 8" arctic pipe bend/tee for 4" pipe and loop 7" ditto for 3" ditto 6 1/2" ditto for 2 1/2" ditto Connect arctic pipes to buildings Excavate, backfill and dispose for arctic pipe trench (1) Ditto expansion loop at 300'0" o/c (21) 48" wide x 4" thick rigid insulation under pipes 20 6,390 546 25,560 EA EA EA EA LF LF SF UNIT RATE ESTIMATED COST 340.00 2,720 285.00 0 225.00 0 165.00 3,300 15\.:25 97,448 Sine 8,327 2.10 53,676 Continued WASTE HEAT RECOVERY SYSTEM PAGE 18 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 (BUILDING 1-8, 9, 10 and 11) 48" wide x 4" thick rigid insulation at loops 2,184 SF 2.10 4,586 42" diameter half CMP steel culvert at 16" arctic pipe mounted on steel pipe frame at loops (7) 182 LF 35.00 6,370 36" ditto for 14" and 12" arctic pipe (6) 156 LF 32550 5,070 30" ditto for 10" and 18" arctic pipe (8) 208 LF 29 .80 6,198 24" ditto for 7" and 6 1/2" arctic pipe ( ) —— LF 22.50 0 WASTE HEAT RECOVERY SYSTEM PAGE 19 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 (BUILDING 1-11, 12 and 13) Supply and return arctic pipe and expansion loops comprising: 12" steel carrier pipe, 2" insulation ‘Surround and 16" PVC jacket pipe (2) 4,482 LF 128.50 575) 7937 Ditto 10" SCP, :2" insulation jand 14° PVC JP (2) 3,190 LF 97.00 309,430 Ditto 8° SCP, 2" insulation ahd 12” PVC JP (2) 1,472 LF 79.80 117,466 Ditto 6" SCP, 2" insulation and 10" BVGiH PZ) 2,058 LF 61.50 126,567 Ditto 5" SCP, 2" insulation and 9" Pvc JP (2) lS2 LF 57.00 65,664 Ditto 4" SCP; 2” insulation and 8” PVC JP (2) 1,192 LF 48.50 57,812 WASTE HEAT RECOVERY SYSTEM PAGE 20 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 (BUILDING 1-11, 12 and 13) Supply and return arctic pipe and expansion loops comprising: (Continued) 3" steel carrier pipe, 2" insulation surround and 7" PVC jacket pipe (2) 1,458 LF 41.00 59,778 2 1/2" SCP, 2" insulation and 6 1/2" PVC JP (2) =- LF 38.50 0 16" arctic pipe bend/tee for 12" pipe and loop 62 EA 985.00 61,070 14" ditto for 10" ditto 40 EA 870.00 34,800 12" ditto for 8" ditto 34 EA 740.00 25,160 10" ditto for 6" ditto 28 EA 520.00 14,560 9" ditto for 5" ditto 16 EA 435.00 6,960 WASTE HEAT RECOVERY SYSTEM PAGE 21 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 (BUILDING 1-11, 12 and 13) 8" arctic pipe bend/tee for 4" pipe and loop 16 EA 340.00 5,440 7" ditto for 3" ditto 24 EA 285.00 6,840 6 1/2" ditto for 2 1/2" ditto -- EA 225.00 0 Connect arctic pipes to buildings 24 EA 165.00 3,960 Excavate, backfill and dispose for arctic pipe trench (1) 7,190 LF 15-25 109,648 Ditto expansion loop at 300'0" o/c (24) 624 LF 15'.25 9,516 48" wide x 4" thick rigid insulation under pipes 28,760 SF 2.10 60,396 WASTE HEAT RECOVERY SYSTEM PAGE 22 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 1. SUPPLY AND RETURN ARCTIC PIPES AND EXPANSION LOOPS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 (BUILDING 1-11, 12 and 13) 48" wide x 4" thick rigid insulation at loops 2,496 SF 2.10 5,242 42" diameter half CMP steel culvert at 16" arctic pipe mounted on steel pipe frame at loops (7) 182 LF 35.00 6,370 36" ditto for 14" and 12" arctic pipe (7) 182 LF 32.50 5,915 30" ditto for 10" and 18" arctic pipe ( 182 LF 29.80 5,424 24" ditto for 7" and 6 1/2" arctic pipe (3) 78 LF 22.50 Teis5 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 2. POWER PLANT MODIFICATIONS CONCEPT NO. 1 Cut existing 10" to 12" pipes for new equipment 2000 GPM, 14,000 MBH, 20 gauge stainless steel plate heat exchanger 2000 GPM, 20' head, 15 HP circulation pump 400 200 Air 12" 10" GPM, 10 HP circulation pump gallon bladder type expansion tank separator insulated schedule 40 steel header ditto 4" ditto at expansion tank 12" gate valves QUANTITY UNIT UNIT RATE EA 28500 .00 EA EA EA EA LF LF 3875 .00 2950.00 2550.00 1370.00 115.00 87.50 42.00 2950.00 PAGE 23 MARCH 29, 1990 ESTIMATED COST WASTE HEAT RECOVERY SYSTEM PAGE 24 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 2. POWER PLANT MODIFICATIONS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 1 10" gate valves 3 EA 2240.00 6,720 12" check valve 1 EA 3100.00 3,100 10" ditto 1 EA 2500.00 2,500 10" balance valve 1 EA 875.00 875 12" tees and elbows 4 EA 565.00 2,260 10" ditto 8 EA 420.00 3,360 4" ditto 2 EA 125.00 250 Connections to equipment and existing pipes 16 EA 225.00 3,600 Electrical conduit, wiring and connections to pumps 2 LOTS 1500.00 3,000 TOTAL ESTIMATED COST: 89,385 WASTE HEAT RECOVERY SYSTEM PAGE 25 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 2. POWER PLANT MODIFICATIONS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 All as Concept 1 1 LOT 89,385 Omit 400 GPM, 10 HP pump 1 EA (2,950) Add 705 GPM, 20 HP pump 1 EA 4,850 WASTE HEAT RECOVERY SYSTEM PAGE 26 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 2. POWER PLANT MODIFICATIONS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 All as Concept 1 1 LOT 89,385 Omit 400 GPM, 10 HP pump 1 EA (2,950) Add 945 GPM, 30 HP pump 1 EA 5,750 WASTE HEAT RECOVERY SYSTEM PAGE 27 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 2. POWER PLANT MODIFICATIONS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 All as Concept 1 1 LOT 89,385 Omit 400 GPM, 10 HP pump 1 EA (2,950) Add 1,865 GPM, 60 HP pump 1 EA 8,700 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 2. POWER PLANT MODIFICATIONS CONCEPT NO. 5 All as Concept 1 Omit 400 GPM, 10 HP pump Add 1,975 GPM, 75 HP pump QUANTITY PAGE 28 MARCH 29, 1990 UNIT UNIT RATE ESTIMATED COST 89,385 (2,950) 13,750 WASTE HEAT RECOVERY SYSTEM PAGE 29 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 3. MODIFICATIONS TO HOSPITAL QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 1 - 5 Cut existing 4" pipes for new equipment 2 EA 95.00 190 400 GPM, 3,600 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 13250.00 13,250 5" insulated schedule 40 steel header 80 LF 48.50 3,880 5" gate valves a EA 485.00 1,455 5" balance valves 2 EA 285.00 570 5" tees and elbows 8 EA 150.00 1,200 Connections to equipment and existing pipes 8 EA 130.00 1,040 WASTE HEAT RECOVERY SYSTEM PAGE 30 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 4. MODIFICATIONS TO SENIOR CENTER QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 - 5 Cut existing 4" pipes for new equipment 2 EA 95.00 190 165 GPM, 1,485 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 8950.00 8,950 5" insulated schedule 40 steel header 40 LF 48.50 1,940 4" ditto 40 LF 42.00 1,680 5" gate valves 2 EA 485.00 970 4" ditto 1 EA 390.00 390 4" balance valves 2 EA 250.00 500 4" tees and elbows 8 EA 120.00 960 Connections to equipment and existing pipes 8 EA 125.00 1,000 New electrical panel 1 EA 1350.00 1,350 WASTE HEAT RECOVERY SYSTEM PAGE 31 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 4. MODIFICATIONS TO SENIOR CENTER QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 - 5 Conduit and wiring 100 LF 12.50 1,250 Connections 2 LOTS 130.00 260 WASTE HEAT RECOVERY SYSTEM PAGE 32 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 5. MODIFICATIONS TO A.C. CO. STORE QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 2 - 5 Cut existing 2" pipes for new equipment 2 EA 50.00 100 40 GPM, 360 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 2975.00 27915) 3" insulated schedule 40 steel header 60 LF 30.50 1,830 2==a7 ECO 40 LF 23275 950 3" gate valves 2 EA 225.00 450 2" ditto 1 EA 185.00 185 2" balance valves 2 EA 150.00 300 3" tees and elbows 2 EA 98.00 196 2" ditto 6 EA 75.00 450 Connections to equipment and existing pipes 8 EA 80.00 640 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 6. MODIFICATIONS TO KIC APARTMENTS QUANTITY UNIT UNIT RATE PAGE 33 MARCH 29, 1990 ESTIMATED COST CONCEPT NO. 2 - 5 Cut existing 3" pipes for new equipment 2 100 GPM, 900 MBH, 20 gauge stainless steel plate heat exchanger 1 3" insulated schedule 40 steel header 80 3" gate valves 3 3" balance valves 2 3" tees and elbows 8 Connections to equipment and existing pipes 8 EA LF EA EA EA EA 65.00 6250.00 30.50 225.00 185.00 98 .00 80.00 6,250 2,440 675 370 784 640 WASTE HEAT RECOVERY SYSTEM PAGE 34 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 7. MODIFICATIONS TO PUBLIC WORKS QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 - 5 Cut existing 3" pipes for new equipment 2 EA 65.00 130 120 GPM, 1,080 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 7750.00 7,750 3" insulated schedule 40 steel header 80 LF 30.50 2,440 3" gate valves 3 EA 225.00 675) 3" balance valves 2 EA 185.00 370 3" tees and elbows 8 EA 98.00 784 Connections to equipment and existing pipes 8 EA 80.00 640 WASTE HEAT RECOVERY SYSTEM PAGE 35 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 8. MODIFICATIONS TO WATER TREATMENT PLANT (SPACE AND WASTE HEAT) QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 - 5 Cut existing 6" pipes for new equipment 4 EA 110.00 440 100 GPM, 900 MBH, 20 gauge stainless steel Plate heat exchanger 1 EA 6250.00 6,250 20 GPM, 180 MBH ditto 1 EA 2150.00 2,150 6" insulated schedule 40 steel header 40 LF 62.50 2,500 4" ditto 200 LF 42.00 8,400 3" ditto 80 LF 30.50 2,440 6" gate valves 3 EA 590.00 1,770 4" ditto 2 EA 390.00 780 3" ditto 3 EA 285.00 855 3" balance valves 2 EA 185 .00 370 6" tees and elbows 4 EA 185.00 740 4" ditto 4 EA 120.00 480 TOTAL ESTIMATED COST: WASTE HEAT RECOVERY SYSTEM PAGE 36 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 8. MODIFICATIONS TO WATER TREATMENT PLANT (SPACE AND WASTE HEAT) QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 3 - 5 3" tees and elbows 14 EA 98.50 1,379 Connections to equipment and existing pipes 12 EA 110.00 1,320 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY PAGE 37 MARCH 29, 1990 9. MODIFICATIONS TO ELEMENTARY SCHOOL QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 - 5 Cut existing 4" pipes for new equipment 2 EA 95.00 190 220 GPM, 1,980 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 9750.00 9,750 4" insulated schedule 40 steel header 80 LF 42.00 3,360 3° ditto 60 LF 30.50 1,830 4" gate valves 2 EA 390.00 780 3" ditto 1 EA 370.00 370 3" balance valve 1 EA 185.00 185 4" tees and elbows 4 EA 120.00 480 3" ditto 4 EA 98.50 394 Connections to equipment and existing pipes 8 EA 80.00 640 TOTAL ESTIMATED COST: ——=—S=~C—s~=‘“‘™S™*””S””””~”~”~”~”~”CnttnR WASTE HEAT RECOVERY SYSTEM PAGE 38 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 9. MODIFICATIONS TO ELEMENTARY SCHOOL QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 - 5 Remove existing ceilings and install afterwards 300 SF 3.85 1,155 New 4" insulated piping in ceiling 200 LF 42.00 8,400 Fittings 10 EA 120.00 1,200 Connection to existing 2 EA 80.00 160 TOTAL ESTIMATED COST: WASTE HEAT RECOVERY SYSTEM PAGE 39 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 10. MODIFICATIONS TO MIDDLE SCHOOL QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 4 & 5 Cut existing 6" pipes for new equipment 2 EA 110.00 220 300 GPM, 2,700 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 12700.00 12,700 6" insulated schedule 40 steel header 100 LF 62.50 6,250 6" gate valves 3 EA 590.00 1,770 6" balance valves 2 EA 370.00 740 6" tees and elbows 8 EA 185 .00 1,480 Connections to equipment and existing pipes 8 EA 110.00 880 WASTE HEAT RECOVERY SYSTEM KOTZEBUE, ALASKA CONSTRUCTION COST STUDY 11. MODIFICATIONS TO HIGH SCHOOL (BOILER 1 & 2) QUANTITY UNIT UNIT RATE PAGE 40 MARCH 29, 1990 ESTIMATED COST CONCEPT NO. 4 & 5 Cut existing 4" pipes for new equipment 4 200 GPM, 1,800 MBH, 20 gauge stainless steel plate heat exchanger 2 4" insulated schedule 40 steel header 200 4" gate valves 6 4" balance valves 4 4" tees and elbows 16 Connections to equipment and existing pipes 16 EA LF EA EA EA EA 95 .00 8870.00 42.00 390.00 185.00 120.00 95.00 17,740 8,400 2,340 740 1,920 1,520 WASTE HEAT RECOVERY SYSTEM PAGE 41 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 12. MODIFICATIONS TO ARMORY QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 ONLY Cut existing 3" pipes for new equipment 2 EA 65.00 130 70 GPM, 630 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 5750.00 5,750 3" insulated schedule 40 steel header 80 LF 30.50 2,440 3" gate valves 3 EA 225.00 675 3" balance valves 2 EA 185.00 370 3" tees and elbows 8 EA 98.00 784 Connections to equipment and existing pipes 8 EA 80.00 640 TOTAL ESTIMATED COST: WASTE HEAT RECOVERY SYSTEM PAGE 42 KOTZEBUE, ALASKA CONSTRUCTION COST STUDY MARCH 29, 1990 13. MODIFICATIONS TO RECREATION CENTER QUANTITY UNIT UNIT RATE ESTIMATED COST CONCEPT NO. 5 ONLY Cut existing 2" pipes for new equipment 2 EA 50.00 100 40 GPM, 360 MBH, 20 gauge stainless steel plate heat exchanger 1 EA 2975.00 2,975 3" insulated schedule 40 steel header 60 LF 30.50 1,830 2" “ditto 40 LF 23.75 950 3" gate valves 2 EA 225.00 450 2" ditto 1 EA 185 .00 185 2" balance valves 2 EA 150.00 300 3" tees and elbows 2 EA 98.00 196 2" ditto 6 EA 75.00 450 Connections to equipment and existing pipes 8 EA 80.00 640 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 Raw Data POWER PLANT Generators: See main text. Radiators: O&M Model 11605 ESH 200 415 and 11860 002 ESH 200 415 Operating Conditions during site visit: Not recorded, avall. from KEA Min. Return Temp to Generator: Will be changed to 185 degree F Engine Design Flow and Max External Pressure: Available from KEA engineers USER BUILDINGS Hospital Boiler: 2 ea. @ 4290 MBH Boiler Supply Setpoint Temp.: 175 Actual Boiler Return/Supply Temp.: N/A Circ Pump(s): Total flow = 900 GPM (design) Circ Pump(s) Pressure: Not available. Senior Center Boilers): American Standard PFA-508, 1115 MBH Boiler Supply Setpoint Temp.: 160-180 Actual Boiler Return/Supply Temp.: 160 Circ Pump(s): CP-1 Grundfos UPS 50-160 Circ Pump(s) Pressure: Not available. A.C. Co. Store Boiler: Boiler Supply Setpoint Temp.: KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN MARCH 30, 1990 2 ea. Burnham PF-34, 261 MBH 160-200 Actual Boiler Return/Supply Temp.: 190 Cire Pump(s): Circ Pump(s) Pressure: KIC Apartments Boiler: Boiler Supply Setpoint Temp.: Grundfos UMS 80-80 Not available. 2 ea. Burnham PF-37, 457 MBH Not available. Actual Boiler Return/Supply Temp.: 175 Cire Pump(s): Circ Pump(s) Pressure: Public Works Boiler: Boiler Supply Setpoint Temp.: 3 ea. Grundfos UMS 80-80 Not available. 2 ea. H.B. Smith, 421 MBH Not available. Actual Boiler Return/Supply Temp.: 195 Cire Pump(s): Circ Pump(s) Pressure: 2 ea. Grundfos UMS 80-80 Not available. KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN Water Treatment Building Boller: 1 ea. Cleaver Brooks M4W-2000, 1600 MBH Boiler Supply Setpoint Temp..: 170-190 Actual Boiler Return/Supply Temp.: 180 Circ Pump(s): Grundfos UPS 50-160 Circ Pump(s) Pressure: Not available. Elementary School Boller: 2 ea. Weil Mclain BL788SW, 1419 MBH Boiler Supply Setpoint Temp.: Actual Boiler Return/Supply Temp.: 175-180 Circ Pump(s): 2 ea. Grundfos UPS 80-160 Circ Pump(s) Pressure: Not available. Middle School Boller: 2 ea. Burnham PF 521, 2983 MBH Boiler Supply Setpoint Temp.: 160-180 Actual Boiler Return/Supply Temp.: 145 Circ Pumps): 2 ea. Grundfos CR60U Circ Pump(s) Pressure: Not available. MARCH 30, 1990 KOTZEBUE WASTE HEAT RECOVERY REPORT AND CONCEPT DESIGN High School #1 Boller: 2 ea. Burnham PF 505, 684 MBH Boiler Supply Setpoint Temp.: 160-180 Actual Boiler Return/Supply Temp.: 165 Cire Pump(s): 2 ea. Grundfos UMS 65-160 Circ Pump(s) Pressure: Not available. High School #2 Boiler: 2 ea. Burnham PF 505, 684 MBH Boiler Supply Setpoint Temp.: 160-180 Actual Boiler Return/Supply Temp.: 165 Circ Pump(s): 3 ea. Grundfos UMS 65-40 Circ Pump(s) Pressure: Not available. No information Is available for the Armory or the Recreation Center. MARCH 30, 1990 PIPING LENGTH ESTIMATION SIZE FOR CONCEPT NO. [PIPENO.|LENGTH| 1] 23S 1 3400 6 8 10 12 12 Z 900 - 6 8 12 12 3 740 - 5 6 6 6 4 340 - 5 6 10 10 5 320 - 4 6 10 10 6 1640 - - 6 10 10 7 760 - - - 10 10 8 760 - - - 6 8 9 140 - - - - 4 10 1140 - : - - 3 11 400 6 6 6 6 6 12 240 - 3 3 3 3 13 260 - 4 4 4 4 14 240 - - 6 6 6 15 100 - - 4 4 4 16 320 - - 4 4 4 17 660 - . : 8 8 18 600 - - - 6 6 19 400 - - - 5 5 20 700 - - - 5 5 21 320 - - - - 4 SUMMARY PIPE TOTAL LENGTHS FOR CONCEPTS sve | it 23S 12 0 0 0 4300 4300 10 0 0 3400 3060 3060 8 0 3400 900 660 1420 6 3800 1300 3680 2740 1980 5 0 1080 0 1100 1100 4 0 580 680 680 1140 3 0 240 240 240 1380 2-1/2 0 0 0 0 0 TOTAL 3,800 6,600 8,900 12,780 14,380 HEAT EXCHANGER SCHEDULE fo alee amen Ee oem MBH Fatatatal POWER PLANT MAIN HX 14000 X X X X X HOSPITAL SPACE HT. 3,600 X X X X X SENIOR CENTER SPACE HT. 165 1,485 X X KX X A.C. CO. STORE SPACE HT. 40 360 xX X XK X KIC APTS SPACE HT. 100 900 xX X X X PUBLIC WORKS ALL HEAT 120 1,080 xX X X WATER TREATMENT SPACE HT. 20 180 xX X X WATER TREATMENT WATER HT. 100 900 xX X X ELEM. SCHOOL SPACE HT. 220 1,980 xX X MIDDLE SCHOOL SPACE HT. 300 2,700 xX X HIGH SCHOOL #1 200 1,800 xX X HIGH SCHOOL #2 200 1,800 xX X ARMORY SPACE HT. 70 630 Xx REC. CENTER SPACE HT. 40 360 Xx ee MAIN [PRESSURE DROP|PUMP SIZE OPERATING CONNECTED | FLOW | BASE BHP| HP COST 1 2only 400 25 38 «6.4 10 $7,850 2 23,45 705 25 52 137 20 $16,911 3 2 through 7 945 25 72 232 30 $28,556 4 2through 11 1865 25 88 53.2 60 $65,652 5 2 through 13 1975 25 94 59.4 75 $73,216 Operating cost assumes $0.19/KHW. EFI CONSULTING ENGINEERS 560 E. 34th Avenue, Suite 300 SHEET NO: t or__t Anchorage, Alaska 99503 - Ph. (907) 561-1666 CALCULATED BY. Tw) DATE z/e1 Js FAX (907) 561-7028 CHECKED BY DATE scate_KOTZEGUE WASTE HEAT Lostes Begnaning, C Awct valves on.engines, there is assummd to be a constant) heat. loss fedycing the. avoilable waste hao _ Yhese. losocs fal\ into the Followinn, | categorres : i 1, Twoide powerplant - loses not assisting vy] space healing 2. AY ponte plank - epace Motiny,, Fue). Keating, eke 3, Distribudion eystem - avehe pipe bo fesume heat loss pot asotsteng in space heaton ts egvivulent to 00’ of oninsvlated Jo” pipe, 100'oF vninsulaed . 6" pipe, - and 50,000 Bh/ke Le the jow Floo kept. goiny Heel the exterior remote radiators, a _ a | From ASHRAE fandamertols (489) Mo bt et b° ste) » 387 Bl/he tt 2 134 me | lo” eel 2 Wor Br|lv/f} 2 Comet _ Radtasor = | BO MB = SUBTOTAL 144 mnBtt PART Z.- AT POWER PLANT __ these loses are accouled for ia the recovery pnodel PART 3-. DISTRIBUTION SXSTeM. —— eS Resume a lose of 30 ety]ft for each fod af pipe laid. pe PRODUCT 2041 (AEBS) Inc. Groton, Mass. 01471 FF PE CONSULTING ENGINEERS a 560 E. 34th Avenue, Suite 300. SHEETING: oF A OE a eee eee CALCULATED BY Tx pate__3/: zof 40 FAX (907) 561-7028 CHECKED BY DATE scac_ KEW WASTE HEAT LOOP cALcS From. EA enaincers, KE eecke) fea dead alt UA et eee 16. $19,000. Blu|he... 500,000 blo) he (4ppcox.) tsused. for feel dk | Nothing: Since Se fuel te ad heads durin he | summer. months thoy load wit \pe. subhrackd Lr se vse Glevlebion, ST seseyn for Kheebve = UF - (37°F) = 102°C Metis =. Uo Fc (Ore ee eee Breasured > 719,000 Brofhr — (onaker) ‘ DT desten : pe LOZ = Y sense J ymeosnied Cee) = Prensured rd as ) 2 fp bese (winter) = bo met J design [suramer) = 200 MBH (Asume May — Avs.) Max. Flos coentnn Aycol @ 16° aT a ie? Segoe jae = 4501S” W055 24. 4PM : es (¢ >) 24 trary DD i (W5)(24) dasiyn (Dd) i _ uo KV ATueya. (4) [agee0 Beal Crezy : <b a dest a DD ; Sie 8 = WS 4510 [design a) 2 a ; 650 000 JOB snail FPE _ consuttinc ENGINEERS 560 £. 34th Avenue, Suite 300 ‘attain ! ith eer eenisaee CALCULATED BY Tu) DATE _. 3) 2) l 4 os FAX (907) 561-7028 CHECKED BY DATE ses SCALE ENERGY ESTIMATION. FOR WATER HEATING _ Assume : set runt Water Temp in... =... 36°F A nN Waker evap eat = 44°F. (average basis) ‘ Flow rule = 200 GPm Heahing ecason = All months except May - Sept. (F months) g = MCp DT = (500) 200 GPrn (10° AT) = 1000 MBH Enersy ue Tracath - (1,020, 50 Bele) 24 He] day oad avg. doys /mordh) = F530 x0" Bh)month C= .F300_gallom/mondh, eee EE ER lulet Borde aAnd le MRA eBid lawns oeM dE SaMRe eA palates Hh ny PROQUCT 206-1 (WEBS) tne. Groton, Mass 01471