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Scammon Bay District Heat Report & Concept Level Design 1991
Scammon Bay District Heat Report & Concept Level Design PREPARED FOR State of Alaska Alaska Energy Authority 701 East Tudor Road P.O. Box 190869 Anchorage, Alaska 99519-0869 March 1991 polarconsult alaska, inc. N ENGINEERS e SURVEYORS e ENERGY CONSULTANTS Wat 1503 WEST 33RD AVE.* ANCHORAGE, ALASKA 99503 polarconsult Scammon Bay District Heating Executive Summary Scammon Bay, a bush community with a population of 326, is located in Western Alaska on the Yukon-Kuskokwim Delta, one mile up the Kun River from the Bering Sea. Scammon Bay obtains its electricity from a Alaska Village Electrical Cooperative (AVEC) diesel plant. There is potential to recover heat from these diesels. This report was commissioned by the Alaska Energy Authority (AEA) to determine whether introduction of a district heating system, which would recover this heat, would save the community money. With the cost of heating fuel varying between $1.15 and $1.75 per gallon, substantial sums are expended to heat community buildings. A district heating system is not complicated. Typical baseboard-heated buildings have a boiler which transfers heat to water, and a pump to circulate the water through the baseboard heaters. At the heaters, the heat is transferred to the air which heats the building. A district heating system works in a similar manner as the engine heats the water, but it utilizes waste heat instead of burning fuel. This report discusses how this heat may be used in Scammon Bay, and what results may be expected. The water system, school, and city buildings were studied as likely candidates to be served by a district heating system in Scammon Bay. The most economical combination would be the addition of the city hall, health clinic, head-start, water plant and elementary school. This combination would utilize 100% of the heat available at the power plant during the winter months and would be the most cost effective system. Project cost, annual amount of fuel saved, and fuel cost savings for concept #3 are as follows: Project Cost $611,168* Amount of Fuel Saved per Year 19,631 Annual Savings $29,480 Straight Pay Back in Years 20.7 Total project cost includes design, supervision, inspection, administration and construction. The project includes construction of a new module at the power plant to house the district heating equipment, renovations to the AVEC power plant cooling system, construction of a hot water transmission line and renovations to the clinic, water polarconsult Scammon Bay District Heating Glossary AEA: Alaska Energy Authority, the State agency which commissioned the report. AVEC: Alaska Village Electric Cooperative, the electric utility providing electric power to the community. APUC: Alaska Public Utilities Commission, the body which regulates most utilities throughout the State of Alaska. Capital Cost: Total cost to construct the project, including actual costs as well as design, management, contractor's overhead, risk and profit. Operating Cost: Cost to keep the project operational, computed on an annual basis over the life of the project. District Heating: Concept of recovering engine waste heat which would otherwise be lost through radiators to the air. This heat is circulated in pipes as hot water, to heat buildings. Present Worth: The value of a future or past sum of money at a given time, usually the present, taking into account the time value of money, using an interest rate. Net Present Worth: The value of a project where costs and income have been converted to a common time and combined. polarconsult Scammon Bay District Heating I. Introduction A. Objective The objective of this report is to determine the feasibility of recovering and using the waste heat from the Alaska Village Electric Cooperative (AVEC) power plant generators in Scammon Bay. By considering the cost of heating oil (which varies between $1.15 and $1.75 per gallon), and the amount of heat presently being wasted to the outdoors through the engine radiators, the Alaska Energy Authority (AEA) determined that utilization of waste heat showed potential savings in heating costs. The scope of this report is to determine if a district heating system is feasible, identify optimal applications, and estimate the cost of constructing this system in Scammon Bay. B. District Heating S A district heating system takes energy that would otherwise be wasted and converts it to beneficial use as space heat. A brief description of a district heating system follows. A district heating system is not complicated. Typical baseboard-heated buildings have a boiler which burns fuel, usually oil, and transfers the heat to water, which is circulated by a pump through pipes to radiators. At the radiator the heat is transferred to the air within the building. A district heating system works similarly, with the water heated by diesel engines in the AVEC power plant instead of being heated by a boiler. The water heated by the engines is normally cooled by the radiators at the plant. In a district heating system, this heat is recovered for beneficial use and distributed in pipes to buildings instead of being rejected to the atmosphere. This report discusses how waste heat can be used in Scammon Bay, and the likely results. C. Methodology The feasibility of waste heat use in Scammon Bay has been investigated in the following manner: 1. Information Gathering: Prior to the site visit all pertinent and available Page 1 Mr. Earle Ausman May 20, 1991 Page 2 6. 10. i 12? 13. 14, List of tables, add tables that show: Estimated Distribution of Fuel Oil Use at: I Clinic 2: Head Start 3: City Hall Page 3, Part D - "Population of 350" does not correspond to "Population of 326" in paragraph 1, Executive Summary. Coordinate. Page 5, Section III.B. - was table III.A used to calculate heat rejection figures? Appendix A indicates engine manufacturers test data was used. Coordinate also, water flow for 3306 - is it only 35 gpm? Page 7, Section III.C. - according to Appendix A, building heating summary, only 249 gallons are required to heat the Butler Building annually with the LTA 10 operating. Which number was used in the waste heat utilization spread sheet, 249 gallons or 1525 gallons? Coordinate with the WHU spreadsheet. Page 10, Section IV.A.2. - straight line distance from the power plant to the Elementary School Boiler Room is at least 750; not 660 feet. Figure V-1 shows pipe run to be 600' + 220' = 820 feet. Coordinate and identify length on figure V-1. Table IV-B, page 14 - change "Building" to "Plant." Section IV.C.2. A & C - call out figures V-4 and V-5 in corresponding paragraphs. Section V, Concept Design Drawings A. figure V-1, see 10. Also, indicate where fuel lines are buried utilities run. B. Figure V-2, see 10. Page 29, last paragraph - replace "engine" with "primary." 91Q2\JD0769(2) Mr. Earle Ausman May 20, 1991 Page 3 15. Page 31, section VI, B.2.A. - Figure's V-1 & 2 indicate the arctic pipe will be mostly "2.5" not "3" inch diameter. Also, explain distance from waste heat module to "T" for clinic; distance from clinic "T" to Head Start "T"; distance from headstart "T" to Elementary School "T", and distance to water treatment plant. Also indicate distances from "T's" to user building entry's (show this information on figure's V-1 and V-2.) 16. Page 48, section VIII.D. - Table VIII-A: 1° For “City Hall", "Clinic" and "Head Start:" Why is it so expensive to provide a "stub connection only with two valves and pipe caps"? 2. Add to table VIII-A, a subtotal for "Construction Cost" for each building including a line item for "General Conditions". Also, show the "Project Cost" with Design, SIA, and Project Contingency separate from "Construction Cost" (use similar format to HMS Summary Sheet.) NOTE: The construction cost for a building should be constant for each scenario, any variance in freight, per diem, profit, etc. should be included in the General Conditions. 17. Appendix A, page 1, explain function of "354" in water treatment plant monthly fuel oil usage calculation. Also, replace "Building" with "Plant." 18. Appendix B.10.1 - Cummins is 1800 rpm, rather than 100 rpm. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, Steven Stassel Rural Systems Engineer SS:jd 91Q2\JD0769(3) COVENANT CHURCH |\ | PRIMARY NOT ATTACHED wot -3 44° 7 | OPEN SECQNDARY a-4 | rh | A/2- PRIMARY NOT ATTACHED pe) Primary not SS ATTACHED COVENANT CHURCH 9) | PRIMARY NOT ATTACHED PRIMARY NOT ATTACHED AT OPEN ECONDARY. —— so 2 y District Heating Scammon Ba: CLINIC SCAMMON: BAY — 4 (USER HOOK-UP) enone sei teoachaem greg tama 1 gc maybe manne ses) so bint 2 ti tr a weet I Ae ne WAISAS L3H yLsid woas ~ LOISLSIG OL reek Quandt JILYWSGHIS W3LSAS YBONVHIXS wat W31SAS_1V3H SNINLIY S— — -— — — 3NOZ saldans - — —— 4= 3NOZN xX oy ‘ 3alS yas108 30IS AlddNS *ONIdid d3uINDIY LON Or-0S ON ‘00Z $3143S “SOJONNYD SdWfd MNVL NOISNVdx3- > W3LSAS ONILYBH: | soleetan_ | LOTALSIC \ OT = .1 '31WOS NW1d doo 14 -. LN3WdINOF OL. FAIA TOMLNOD ANAL | ae UaNIVUIS | k Adld 1W3H LOWLSIQ M3N —— "= wv ONIGUNG ONILSIX3 —— eb *31VOS y3SN @ HO. MIN. —— SANTA’ XOSHO™ © dAnd W3ILSAS ONUWSH “ISIXI -—-—> = © = SAWATve> BATA 3LvS Page 23 SCAMMON BAY HEADSTART SILYWIHIS: WALSAS* Safes. v= i f “aa oe WALSAS! LV3H 2 aN P= = Loa sIa WH: pare SH HES _— TA 4 eck e de 4 Ihe lygiv3H i 1 Taina it { “WBLSAS Pai nt eee setts y doRusia O1 Sone J 3NOZ “woarodd SIHL"7A | NOILONNCNOD NI ALIS 3HL AG TIVIWLSNE | 3d OL W3LSAS ONILV3H ONIGTING A3N MO 4/€ C3073 ‘THUS 4b i © laaiv3H 14INA est 30IS ONILV3H 30IS AlddNS ONIdid VST = 41 was eo N¥1d 40014 1 m7 3ovNaN4 ao L SONILSIX3 LN3WdINOA Y3SN eO4 BIWdS 3 woos RUS ABEL aq "WALSAS = » ONILW3H EE ATTYLSIA AAWVA TOYLNOD dWal oR 3uINDAY LON Or—-OS INN ‘00Z S31N3S ‘SOJONNYD yH/N1a 000‘ YINVL-NOISNWdX3 439 YaNivals Ve ddid 1W3H LOldLSIG MAN —— ONIDING ONILSIXS —— 31NG3HOS: LN3WdINDS WALSAS* ONLLW3H MAN -——- wasn ® HO MIN —— 3AWA XOSHO 1 dnnd © SAWA va oA BATA ALY (Pd = i N FON. *s 3 3 : t SLs ottFWOS WS a Hee i LSM OILYWBHOS WSLSAS NVid SOOT digas = i a re i a jie 8 ' ; noe 1. = Be | Sees | a Sa) fe" YS9ONVHOX3 1V3H ina j i Og | 3 3) WBLSAS L3H ¢ pad 41a Cae! HLv@ ool 13s Boies ; | Feo} ee" Lora SIC KOSS 27. _ SINNDI9¥ | a eB : 3 2 eh ‘enepinspenarese a ° sr : W31SAS i¥3H ly LOTSLSIG. BLT | no a? i “ i ei ~ SNINLBY = — — — — +h! | ites INO ZL | i ; aN ES - a 4 saldgns - — << 1! ' 3NOZ a 1. =| | , | = | B39vNVH | \ | | uu —_ + a 133F0ed SIHL HLIA NOLLONACNOD NL ALIS ts | | | BHL AG CATWISNI 34 OL W3ALSAS ONILW3H M3N ee ‘¥? WRISAS = So INSWIND : ONILW3H w3SN Y04 30vdS-3 LIIaLSI€ WOOS IW3INVHIZW AN ¥H/TU8 900'DS Y3ONVHOX3 LV3H SCAMMON BAY — CITY HALL’ & =a a > | Nout 3q0lS Yy3a1I0E8 x q3073M “TAS .t 30IS AlddNsS ; S ‘ *ONIdid BATVA TOdLNOO dNaL = YaSN © HO WGN —— 2 Q3YiNOBY LON. HNVL NOISNYAX3 MANIVULS kG BAWA 403HO 1 OF-cS ONN OZ) did 1v3H Lo1WLsIa M3N- —— dand © fr = S3RGS ‘SOJONNNO Sand WALSAS ONUV3H M3N -—- 3AWA ya tad \ a ONITIING ONUSIX3 3AWA Blvd | = SS polarconsult Scammon Bay District Heating B. Water Treatment Building 1. General The water treatment building is owned and operated by the City of Scammon Bay. Technical assistance is provide by the U.S. Public Health Service. The facility includes a 2,800 gallon water contact tank, water treatment equipment and boilers to heat the water. The water is circulated throughout the community in insulated below ground water lines. 2. Location The water treatment building is located 580 feet from the power plant. (See Figure V-1.) The district heating distribution pipe from the power plant to the treatment facility will be buried "Arctic" pipe. Service to the water treatment facility will branch off the line to the elementary school. This 130 foot long branch will be buried in an easement on the south side of Hillside Street. (See Figures IV-2 & V-1.) 3. Heat Use The water treatment building's three boilers supply heat to the water treatment building, the contact water tank, and the circulating water in the distribution lines which are divided into three separate loops. Fuel records for the water treatment building were obtained from the City of Scammon Bay. Monthly fuel use was estimated by distributing this fuel consumption, using the number of heating degree days per month. (See Appendix A for sample calculation.) Page 13 polarconsult Scammon Bay District Heating Table IV-B Estimated Distribution of Fuel Oil Use at Water Treatment Building Month Net Fuel Heating Oil Use Degree Days Gal. D. January 921 1,742 February 917 1,728 March 834 1,475 April 7712 1,283 May 626 834 June 489 415 July 470 357 August 492 425 September 355 618 October 708 1,086 November 804 1,381 December 912 1712) Annual 8,500 13,056 Purchase cost / gal. $1.75 Note: Oil distribution is based on 4,250 gallons of oil being uniformly distributed over a year with the balance of 4,250 gallons being distributed in accordance with degree-days. 4. District Heating Connection The district heating pipe will enter through the wall of the building next to the district heating equipment. The heat exchanger, pumps and expansion tank will be located in the main room, and connection will be made to the boilers in the adjacent room. (See Figure IV-3.) The existing bench will be relocated. The secondary side of the heat exchanger will connect to the boiler return lines. (See Figure V-7.) Page 14 polarconsult Scammon Bay District Heating Figure [V-3 Proposed District Heating Equipment Location in Water Treatment Plant Figure IV-4 Proposed District Heating Equipment Location & Boiler Connection in Clinic polarconsult Scammon Bay District Heating C. City Building Connecti 1. General The people in Scammon Bay very much want a district heating system. They understand the difficulties inherent in cost effectively connecting buildings which are small users of heat, because the connection cost can exceed the value of the savings in energy. Because they very strongly feel they want to connect three of their community buildings which are near the power plant; they have asked that the Authority only provide the district heating connections to the city hall, clinic, and head start buildings, and they will provide the balance of the facility that will distribute the heat throughout the buildings. For small users where installation costs must be kept low and consequences of a failure are not of great significance, redundant pumps and other items can be eliminated. For some installations where piping distances are short and connections reliable, the heat exchanger can be eliminated from the system entirely. For others coil type or shell and tube exchangers would be appropriate as they are less expensive and require less maintenance than the plate type heat exchanger. 2. Heat Use & District Heating Connection a. City Hall: The city hall is a building with about 1,064 square feet of floor area and has six rooms. The city hall is heated by a pot type oil burner located near the north end of the hall and by localized electric heaters. Presently, heat is distributed in very non uniform manner. For this building a base board loop would be installed by the City. The loop would be connected to a thermostat and a small single circulation pump. The tap would be off the main distribution lines. A shell and tube, or a coil type heat exchanger and a small circulation pump could be added for increased reliability. It is estimated that the city hall would use approximately 1,148 gallons of fuel oil per year. (See Appendix A for Calculation.) Page 16 polarconsult b. Scammon Bay District Heating Health Clinic: The clinic is heated with a conventional boiler system, and the user equipment will be located in the existing mechanical room. A standard connection would be appropriate but with single circulation pumps and other equipment. (See Figures IV-4 & V-6.) The clinic has a floor area of 640 square feet and five rooms. It is estimated that the clinic uses approximately 751 gallons of fuel oil per year. (See Appendix A for Calculation.) Head Start: The head start building has a large central room with a floor area of 1,500 square feet, two small classroom/offices, and a cold storage area. Currently the building is heated with a single pot burner oil furnace. For this building a base board loop, or two unit heaters, would be installed by the City. The loop would be connected to a thermostat and a small single circulation pump. The tap would be off the main distribution lines. A shell and tube, or a coil type heat exchanger and a small circulation pump could be added for increased reliability. It is estimated that the head start would use approximately 1,464 gallons of fuel oil per year. (See Appendix A for Calculation.) Page 17 polarconsult Scammon Bay District Heating V. Concept Design Drawings SCAMMON BAY SITE PLAN & PROPOSED DISTRICT HEATING SYSTEM RECREATION CENTER 0 U HIGH SCHOOL ELEMENTARY SCHOOL BOILER/ GEN. BLDG. NN ° TEACHER HOUSING R TREATMENT PLANT LEGEND Z| PROPOSED WASTE HEAT USER PROPOSED WASTE HEAT LINE —-S-— EXISTING SEWER LINE 55 EASEMENT REQUIRED —---— EXST. UG POWER LINE —-— EXISTING FUEL LINE © EXISTING POWER POLE FIGURE SCALE: 1” = 150° V-l Page 18 polarconsult Scammon Bay District Heating SCAMMON BAY — PROPOSED SYSTEM SCHEMATIC ELEMENTARY SCHOOL (SEE FIG. V-8> | TO USER USER —— —, WATER TREATMENT c 7 (SEE FIG. V-7) | | oS ae | | | | CLINIC CONNECT | (SEE FIG. V-6 | To USERUSER | CONNECT | Ce = = = =| | SYSTEM HEAT r : _—_ | SYSTEM Te ln | i g | I “He ! CONNECT BURIED eS [ _ [TO USER USER Bag: _ Sieg LS | SYSTEM. HEAT pede 2 JEXCHaNgeR RIE ’ | a |. 130’ - 15'6 = — CTT TT q Ft rn a [-°- : | p38 TO USER | | SYSTEM a | | SYSTEM | | | qe 4 | HEADSTART (SEE FIG. V-5) ee a a oe ee | CITY HALL (SEE FIG. V-4> SA 600’ = 2.5°0 ‘ BURIED ARCTIC PIPE r | j Ito ENGINE | -1 5-9 | COOLING system | | | PRIMARY HEAT L J EXCHANGER BUTLER BUILDING DISTRICT HEAT MODULE (SEE FIGURE V-3) CSEE FIG. V-3) LEGEND P<] ISOLATION VALVE fNU CHECK =VALVE — — EXISTING NEW DISTRIBUTION NEW @ USER NEW @ PLANT €) USER PRIMARY DISTRIBUTION PUMPS FIGURE NTS V2 Page 19 polarconsult TO DISTRICT HEAT SYSTEM SEE FIGURE V-1 NOTE i Scammon Bay District Heating SCAMMON BAY DETAIL SHOWING REVISIONS TO POWER PLANT AND DISTRICT HEAT CONNECTION EXISTING EXISTING RADIATOR RADIATOR am, 7 I= SH + “lh i PRIMARY HEAT EXCHANGER DISTRICT HEAT MODULE (NEW) il #1 lll] AH Hl}Hj}-— | ~ ENGINE #2 ENGINE #3 UNIT HEATER EQUIPMENT SCHEDULE HEAT EXCHANGER — 300,000 BTU/HR RADIATORS YOUNG, SERIES 22 PLANT PIPING 3"_STEEL, WELDED UNIT HEATER 60,000 BTU/HR T” CU LEGEND |) BUTTERFLY VALVE S24) AMOT VALVE PNY CHECK VALVE ji] © FLEX CONNECTOR — — EXISTING NEW DISTRICT HEAT SYSTEM ——— NEW PRIMARY PIPING «]) PUMP NOTES: EXISTING POWER PLANT 1, LOCATION OF POSSIBLE BOOSTER PUMP 2. PUMPED ENGINE WARM SYSTEMS FOR ENGINES 1 AND 2, AND EXP, TANKS NOT SHOWN, 3. EXISTING SYSTEM COMPRISES TWO ENGINES WITH REMOTE MOUNTED RADIATORS AND ENGINE #3 WITH SKID MOUNTED RADIATOR. FIGURE V-3 Page 20 istrict Heating Scammon Bay polarconsult (USER HOOK-UP) SJILYWAHIS WALSAS SS9NVHOX3_1LV3H W3LSAS LV3H payne = LOINLSIq wos” W3LSAS LV3H. > 0 Loraisid C1 SNANLAS - — -e- — — 4oD<KIG 4aNnoz 3Nno2Z | | | | = Sal1ddNs - — ~—- 5 | | | | LOBCONd SIHL HLIM NOILONACNOD NI ALIO | > BHL A@ CITWLSNI 3@ OL W3LSAS ONILV3H M3NL_ Nd 4b 3d0is Yy3a1108 03073 ‘1331S «lt 3agiS AlddAS SONIdid GavINOJY LON ANVL NOISNYdx4 OF-CS OWN ‘D0Z Salas ‘SOJINNYO SaWnd 4H/NLA 900'0S Y3ONVHOX3_LW3H JINGSHOS LNAWNdINDA eee ee Nvld aco74 (| al ‘J WIS 4a313 SLNNOI39 ALIS WAISAS =~ pam Sai See aa ONILY3H aa9vNVA SL a9VvaOLS 4AN3WdIND3 Y3aSN aO4 FVdS % LOTaLSid WOOS WOIINYHI3ZW A3AN SAWA TOYLNOD dW3L YANIVYLS ddld IW3H LOIWLSId MAN WALSAS ONILW3SH M3N ONITNAG ONILSIXS ON3931 % Yy3aSn ® HO M3N AAWA MO3SHO dWnd JAWA “WE SAWA 3LY9 Scammon Bay District Heating polarconsult HEADSTART SCAMMON BAY (USER HOOK-UP) SJILVWAHIS W3ALSAS S$alddNs LOIWLSIG WOd4 pad) be T1771 | | | ya1¥3H . | | linn WALSAS WI, pal eg —4re— ae — 1 _ J 1SISLSIG O1 SNanLaa 3NOZ TT lyg.v3H |LINA | | -1L_ | | ‘LOarO8d SIHL /M | NOILINNACNOS NI ALID GHL A@ CAVIVLSNI | 3d OL W3LSAS ONILYSH SNIGTING MAN L 3dIS ONILV3H 3dgiS AlddNS “ONIdid NO ./f Q3073M ‘1331S ut SL = 1 :31WIS Nvild so014 r 7 39VNaN4 L SONILSIX3 C N3HILIN LN3WdINOS a3asn aO4 3IWdS 8 WOOY WIINVHI3SW MAN WALSAS ONILVSHE 5 LITSLSIA HAS a9vaOLs AYLN3Z d3aSNNN BAIA IOALNOD dWAL y3aSn ® HO M3N G3YINOAY LON YANVL NOISNYdx4 YANIVYLS SATA O3HO Ov-0S OWN ‘007 saldas ‘SOJONNYD SdWNd Aadid 1V3H LOIWLSIG MAN dWnd W3LSAS ONILVYSH MAN SAWA “IVa 4YH/N1a 000'09_YIONVHOXI LW3H JINGSHOS LNAWdINOS ONIDING ONILSIXS SAWA 3LYD QN3931 Scammon Bay District Heating polarconsult CLINIC SCAMMON BAY (USER HOOK-UP) JILYWAHIS WALSAS YFONVHOX3 LV3H WAISAS LY3H, pa 4 a Lordisia woas> =~ S WALSAS L3H Lawisia oe af SNASN LAY s— — -— — — 45D<KD, 3NOZ S3aI1ddNs - — << 3Nnoz nO wb 3dis ¥a10¢8 O3073M ‘1931S ul 3dls AlddNS *ONIdid dayINOIY LON MNVL NOISNVdXx4 Or-0S OWN ‘00Z Saldas ‘SOJQNNYD SdWNd YH/NLA 000'09 YIONVHOX LV3H SINGSHOS LN3AWdINGA OT = .T ‘3 1WIS N¥dd aoo14 XL a SS W3LSAS 5 LN3WdINOF ONILY3H a3asn YyO4 3dVvdS LOTaLSIC Tn SN AANWA 1OYLNOD dW3L yasn ® HO MIN Y3ANIVeLsS 3AWA YOSHO ddid 1V3H LOIWLSIG MIN dnd WALSAS ONILWSH “LSIXS SAWA “Wa ONIDIING ONILSIX3 JAWA 31V9 QN3931 Page 23 polarconsult Scammon Bay District Heating SCAMMON BAY — WATER TREATMENT BUILDING (USER HOOK-UP) ZONE EQUIPMENT SCHEDULE A suPPLies HEAT EXCHANGER 150,000 BTU/HR PUMPS GRUNDFOS, SERIES 200, UPCD65—160 EXPANSION TANK 40 GAL. PIPING: SUPPLY SIDE 1.5” STEEL, WELDED BOILER SIDE fiSy GU) HEAT SYSTEM EXPANSION TANK p qGbYCOoL FILL }<FROM DISTRICT HEAT EXCHANGER “HEAT SYSTEM AIR SEPARATOR SYSTEM SCHEMATIC DISTRICT HEATING TT SYSTEM || oo CONTACT TANK LEGEND GATE VALVE BAL. VALVE PUMP > = CHECK VALVE OIL Heater | EXISTING BUILDING NEW @ USER ay SPACE ce fool fl Fo] EXISTING tw) courpment] EJ CI CI NEW DISTRIBUTION os STRAINER TEMP CONTROL VALVE —— FLOOR PLAN ae polarconsult Scammon Bay District Heating SCAMMON BAY — ELEMENTARY SCHOOL BOILER PLANT (USER HOOK-UP) * zone A suPPLies HEAT EXCHANGER 350,000 BTU/HR PUMPS GRUNDFOS, SERIES 200, UPCD65—160 EXPANSION TANK 40 GAL. PIPING: SUPPLY SIDE 2-1/2” STEEL, WELDED BOILER SIDE 1-1/2" CU EXISTING ZONE RETURNS CAPPED OFF ce) il i HEAT SYSTEM EXPANSION TANK NEW ZONE RETURNS . gol yYCOL Ri 2 |_;FROM DISTRICT HEAT EXCHANGER HEAT SYSTEM AIR SEPARATOR SYSTEM SCHEMATIC a > SPACE rd FOR USER. | Generator EQUIPMENT L__._._J 3 rare a fl Sastarcr BAL. VALVE SYSTEM PUMP CHECK VALVE EXISTING BUILDING NEW @ USER EXISTING NEW DISTRIBUTION STRAINER TEMP CONTROL VALVE FLOOR PLAN FIGURE SCALE: 1” = 15’ V-8 ve Page 25 4; polarconsult Scammon Bay District Heating VI. Failure Analysis A. Introduction Failure analysis is the process of predicting the operational reliability of a system. It provides information on the probable type and frequency of failures, and indicates how the system should be designed and maintained for optimal reliability. Reliability (R) is defined as that portion of time a system is functional. Unreliability (UR) is defined as (1 - R). Reliability is determined using the total time of operation (Total Period), mean time between failures (MTBF), and mean time to repair (MTTR). A district heating system depends on a number of components to provide heat to the user. The total unreliability of the system is the sum of the unreliabilities of these components. For example, if a pipe had an MTBF (mean time between failure) of 8,760 hours, and an MTTR (mean time to repair) of 8.77 hours, the reliability would be 1-(8.77/8760) = 1-0.001 = 0.999. This means that the pipe will be operating 99.9% of the time. If there were a heat exchanger that could also fail, and it had the same reliability as the pipe, the reliability of the combined items would be 1 - (8.76 + 8.76) / 8760 = 1 - 0.002 = 0.998. This means that both the pipe and the heat exchanger would be operating 99.8% of the time and unable to deliver heat for 0.2% of the time. The system would then be out of service 0.002 x (8760 hours / year) = 17.52 hours per year. Equipment with moving parts, such as pumps, are generally less reliable than static equipment, such as pipes. It is typical practice to install two pumps for this reason, with the second acting as a stand-by. The following illustrates how reliability is calculated for a system with two or more components of which either can perform the task. The system must be such that more than one piece of equipment can perform the same function, and failure of each piece of equipment is independent, that is, it does not affect the performance of other equipment. Two circulating pumps, each capable of pumping all the necessary fluid, is a common situation that will be used as an example. Assume that one of these pumps will fail once per year and Page 26 polarconsult Scammon Bay District Heating will require an entire day to repair. The system will be unable to deliver heat if both units are unable to pump. Assuming both pumps fail at the same time, system reliability would average only 0.07 hours per year, as compared to a average of 24 hours per year with a single pump installed. Expressed in percentage of the year not serviceable, the value is 0.000751% for the two-pump system. The preceding example, comparing the failure rate of one versus two pumps, illustrates how important and powerful it is to provide redundant equipment for failure-prone items. This is economically feasible only where the costs of duplication are not great. All reliability analysis has limitations. The limitations of this study are as follows: First, it is based on historical data acquired from military, nuclear, and electrical industries, and is limited to the equipment used and the specific application conditions. Because the equipment and conditions will be different for this project, the outcome will be different. Second, the analysis is based on average conditions, and it is probable that for each individual system there will be a greater or lesser number of failures than predicted. Third, actual failure rates for a large number of plants will be closer to the calculated values, on average, than results from a smaller number of plants. Although the values derived by mathematical failure analysis for these systems cannot be exact for the individual installation, because the results are average values, they do provide important information. First, performing the analysis requires the designer and builder determine what causes system failures and take measures to avoid them. Second, the analysis provides the basis to determine which functions need added emphasis during maintenance programs. Third, some degree of scale is provided on how failure affects project income. B. i is of District Heati m A description of major system components, their failure modes, and impacts of failure on the system is presented below. The description starts at the power plant and works toward the served structure(s). Page 27 polarconsult Scammon Bay District Heating 1. Power Plant a. Components Engines: The engines are the source of heat; if they are not running, heat is not available to be delivered. Most AVEC plants have three engines, Scammon Bay will have three. In general, the plants are sized so that a single engine can serve the entire community. The reported down time for AVEC generation systems during 1989 was 33 hours total. This quantity was from 12 hours forced outage of generators, 3 hours power line outages caused by storms, 8 hours planned maintenance outages, and 9 hours all other outages. Based on these values, the system will not generate heat 0.377% of the time. Cooling system. The power plant cooling system associated with the district heating system requires connecting the engines to a common manifold which, in turn, connects the primary heat exchanger and two or more radiators. Two remote radiators are installed at Scammon Bay. The primary generation system failure modes are: Failure or shutdown of the engines; Failure of the radiators due to leakage; Failure of the hoses, valves and piping system; Failure of the engine block itself, and ay SG) 8S.) Failure of the primary heat exchanger, piping, pumps, and valves associated with the engine. Generation plant: Full failure of the generation plant, due to shut down, will stop heat production and disable the district heating system. AVEC reports that these occurrences average 33 hours per year, out of the 8,760 hours in a year. Radiator failure: Radiators usually fail by leaking from cracks caused by rapid and extreme temperature changes. Usually radiator failures do not result in total plant shut-down but do require isolating the leaking radiator and running the system off the standby. If a radiator or engine connection hose breaks it can drain glycol coolant at a rapid rate, Page 28 polarconsult Scammon Bay District Heating requiring plant shut-down. Controls are installed to shut down the plant in the event that coolant levels fall to a dangerous level. Alarms are installed to alert the operator prior to automatic shut-down. This allows the operator to isolate the leak, repair it, by-pass the leak, add additional glycol, or shut down the plant, as appropriate. The primary environmental problem associated with engine radiator failure is discharge of glycol onto the ground. Impacts on the environment from glycol leakage include thawing of permafrost, glycol contamination of groundwater, and glycol contamination of adjacent surface water bodies. Leaked glycol is difficult to recover because volumes are small, the terrain is usually rough, glycol mixes with water and ice, and it will disperse rapidly in water unless it is confined to a catchment basin. The above analysis applies to the existing system and the proposed district heating system upgrade. The only changes will be an increased potential volume of lost glycol, a slightly less reliable system as all equipment is connected to a single cooling system manifold, and a slight decrease in reliability caused by the addition of a heat exchanger. Primary heat exchanger. This component is composed of a series of formed stainless steel plates which are separated and sealed by rubber gaskets. The plates are bolted together within a steel frame to compress the gaskets and hold the plates together. The heat exchanger is used to transfer heat from the engine cooling fluid to the fluid circulated in the distribution pipes supplying the user's heat exchanger. The engine heat exchanger thus serves to isolate the power plant from the distribution system. This isolation means that failures in the distribution piping or at the user facility will not affect the power generation system. Failure modes of the engine heat exchanger are: 1. Blown or leaking gaskets; 2. Broken frame; Page 29 polarconsult Scammon Bay District Heating Valve failure and stem leaks; Cracking or corrosion of plates; Connecting piping system failure; Fouling; IAAP YH Freezing while generation system is down, if water is used as coolant instead of glycol, and 8. Structural damage to exchanger supports due to fire or other events. Generation plant operational impact: 1. A large, sudden loss of coolant on the engine, or primary, side of the heat exchanger will shut down the engines. A slower leak on the primary side can shut down the plant as a result of low coolant levels in the engines. If found in time, the failed exchanger can be isolated with valves. It is unlikely that valves will not work during a heat exchanger failure. District heating system operational impact: 1. Small leak: Operation of system will continue. According to maintenance procedures the bolts will need to be tightened, valve packings tightened, new glycol added to the coolant system, and spilled glycol recovered. Large leak: If on the primary side and if too much fluid is lost before the shut-off valves can be closed, the engines will shut down under low water level control. If on the secondary side: Without fluid, the district heating system will be out of operation until repaired. Pipeline will be drained of fluid and operator will notify main maintenance office. Environmental Impact: Glycol spilled on the ground is the environmental impact of an exchanger failure. Glycol can escape into the ground, thawing permafrost and weakening structural supports, and enter groundwater Page 30 polarconsult Scammon Bay District Heating and surface water bodies. Required immediate actions: Determine cause of failure, isolate heat exchanger at valves or add additional glycol as required by procedures. Catch dripping glycol in pans and recover spilled glycol. Call maintenance office if extra help is required. 2. Distribution System a. c. Components: Transmission pipe will be mostly 3 inch diameter insulated pipe. Each pipe will be made up of a steel carrier pipe 3.500 inches in diameter with a 0.126 inch thick wall. The carrier pipe will be covered with high density urethane foam. Encapsulated in the foam will be two tin plated copper wires. These wires will provide a method to determine if water or glycol has leaked into the insulation. Covering the insulation will be a high molecular weight polyethylene jacket with an outside diameter of 7.87 inches. The pipe will run from the district heating module, which houses only the heat exchanger, 100 feet to the water plant and then 700 feet to the junior high school, and so on. The pipe will be buried about 2 feet deep in the ground. Failure modes of the district heating transmission system are: 1. External or internal corrosion of the carrier pipe; 2. Mechanical damage to the pipe from equipment or digging into the pipe; 3. Failure of the pipe; 4. Failure of pipe welds; and 5. Mechanical failure caused by frost heave or thaw settlement. Generation plant operational impact: None d. District heating operational impact: 1. No operational impact from minor leaks in jacket or pipe which are detected and corrected by the maintenance crew during routine Page 31 polarconsult Scammon Bay District Heating inspections. 2. Larger leaks which cause a measurable loss of glycol will require shutdown of the line with isolation valves, and pipe repair to put system back on line. Environmental impact: Glycol spilled on the ground is the environmental impact of a pipeline failure. Glycol can escape into the ground, thawing permafrost and weakening building supports, and also enter groundwater and drain into surface water bodies. Required immediate actions: Determine cause of failure, isolate pipeline at valves or add additional glycol as required by procedures. Catch dripping glycol in pans and recover spilled glycol. Call maintenance office if extra help is required. 3. User Connections a. Components: Each system is composed of a heat exchanger similar to the one at the power plant, two circulation pumps, an expansion tank, provisions for adding glycol coolant, a btu meter, piping, and valves. Failure modes of the heat exchanger are: Blown or leaking gaskets; Broken frame; Valve failure and stem leaks; Cracking or corrosion of the plates; Connecting piping system failure; Fouling; SS Ne Freezing while generation system is down, if water is used as coolant instead of glycol; and 8. Structural damage to the exchanger supports due to fire or other events. Page 32 polarconsult Scammon Bay District Heating Failure modes of the pumps are: Pump body failure; and 1. Failure of electrical circuit; 2. Seal failure; 3. Motor failure; 4. Impeller cavitation; 5; 6. Connection leakage. Failure modes of the expansion tank are: 1. Water logging or bladder failure; 2. Corrosion; and 3. Broken sight glass. Failure modes of the piping system are: 1. Leakage of valve stems; 2. Failure of valves to open or close; 3. Failures due to corrosion; and 4. Failures due to materials or installation defects. Failure modes of each of the school connections are: 1. Failure of the school system to hold fluid; and 2. Failure of the school's circulation pumps. c. Generator operational impact: Failure of the above items will not affect the generation plant. d. District heating system operational impact: Heat exchanger: As described for the power plant, minor leaks from the heat exchanger will be corrected by catching and returning leaking glycol, tightening bolts, and scheduling the unit for gasket replacement. Major leaks of the heat exchanger will require the system to be isolated with the valves until it is repaired. Pumps: If a pump fails the system will be off until the failure is detected and the standby pump is put into service. If two pumps fail the system will be down until one can be repaired. Page 33 polarconsult Scammon Bay District Heating Expansion tank: An expansion tank failure could be caused by the sight gage breaking, which will require system shut down until it is repaired. Corrosion is not a likely form of failure for an ASME 125 psi rated tank. Piping: Failure of the piping will generally occur at valve stems and where there are gaskets or joints. Slow leaks from these causes and from corrosion will not require shutting the system down. Shut-down of the system could be caused by a valve stem being twisted off or by a broken casting; repairs will be required before the system is returned to operation. Environmental Impact: The environmental impact will relate to glycol spillage. A large, rapid leak might enter the ground, where it could lead to thawing and structural failure. There is potential for groundwater and surface contamination. Small leaks are likely to stay in the building, but will require immediate and complete cleanup. Required Immediate Actions: For a slow leak, pans will be placed to catch leaking glycol, packings and joints will be tightened if appropriate, and fluid replaced. For a large leak, isolation valves will be closed to reduce loss of fluid. Repairs and replacements will be made, or maintenance crew notified, as required by procedures. For a pump failure, the failed pump's valves will be closed, the standby pump's valves opened, and the motor energized. If both pumps fail, one or both will require repairs. If an expansion tank fails, the tank will require recharging or repairs. For extensive repairs or replacement the maintenance crew must be notified. C. Failure Frequency and Cost The most common modes of failure are listed below, along with the associated frequency of occurrence, repair cost per occurrence, amount of down time, and a description of the effects on system life. Failure rates are calculated using the method shown in the Introduction. It should be noted that maintenance of certain Page 34 polarconsult Scammon Bay District Heating items will require that the system be removed from service. This maintenance can be scheduled during a period when the power plant is out of service or when the user building does not require heat. For a school this would be in the summer. Therefore, the potential effects of loss of energy sales during routine maintenance are not included in the calculations. AVEC generation: The most common form of failure is engine failure. Frequency is variable but outage time is estimated at less than 33 hours per year as four generators will be available. Repair cost to system is $0 as it is not related to district heating system. Heat exchanger at power plant. The most common form of failure is failure of seals. Frequency of occurrence is 10.6 years. Down time is 72 hours, repair cost is $2,000. There will be no measurable effects on system life from repairs. District heating pipe. The most common form of failure is from poor installation. Frequency of occurrence is 5.18 years. Down time is 48 hours, repair cost is $2,000. There are no measurable effects on system life from repairs. User connections at school. The most common form of failure is the heat exchanger. Frequency of system failure for each system is estimated to be 4.3 years. The combined school system frequency of failure of one of the units is once each 1.4 years. Down time ranges from 24 to 72 hours depending on which item fails. Repair cost is $2,000. There will be no measurable effects on system life from repairs. User connection at water plant. The most common form of failure is the heat exchanger. Frequency of system failure for each system is estimated to be 4.3 years. Down time ranges from 24 to 72 hours depending on which item fails. Repair cost is $2,000. There will be no measurable effects on system life from repairs. Connections at city buildings: The connections at the city buildings are planned to be constructed and operated by the city. The probable down times for the city hall, clinic and the head start building will be variable based on how soon they are repaired and whether a spare pump or parts are available. The cost Page 35 polarconsult Scammon Bay District Heating of repairs to the city will be much lower then that projected for larger facilities because there will not be the expenses of transportation, and per diem. Further the high wage scale of specialists is not paid to local people. Total system: Failure frequency of the total district heating recovery system is summarized in the following table. Figure VI-A System Component Failure Rates Item Failure Rate Heat recovery, power plant 0.000507 Transmission pipe 0.00159 City Hall 0.000747 Clinic 0.000747 Head Start 0.000747 Water heating assembly 0.000747 Elem. school heat assemb. __0.000747 Total 0.005832 To make the above figures of value the subsequent table has been prepared which shows the effect of outages on the production or sale of heat. Figure VI-B Annual Hours System Components Off Line Item Failure Oil used Oil Lost Hours/ % total . hrs/ Heat Recovery Power Plant 4.4 100.0 4.44 Transmission Pipe 14.0 100.0 14.00 City hall 6.5 4.1 0.27 Clinic 6.5 21 0.18 Head Start 6.5 3 0.35 Water Treatment 6.5 30.2 1.96 Elementary School 6.5 57.4 3373 Sum (Equiv. Hours/yr) 56.2 24.93 Page 36 polarconsult Scammon Bay District Heating The weighted value can be derived by multiplying the systems savings of 19,631 gallons of oil per year x 24.93 / 8,760 which is 56 gallons of oil based on equivalent heat which is not delivered because of failures. The number of maintenance outages which are paid for by AEA will be 0.88 per year at 2,000 each for a total cost of $1,770 per year. *Note: Outage of one of the users means that only that unit's fraction of the heat is lost. This assumes that the isolation valves function. In a case where only a small amount of heat is being lost, maintenance may be performed on a scheduled basis rather than on an emergency basis. In that case the repair costs are considerably reduced. A portion of the annual 33 hours of generation plant outage should be added to the total waste heat recovery system outage time. The proper number should be 25 hours per year (33 total hours minus the 8 hours of scheduled outage which occur during the summer.) The 25 hours would be distributed randomly. The total time the system would be unable to deliver heat based on outage of the engines, heat exchanger and the transmission pipe, would be about 53 hours per year, which is 0.61% of the time. The time that the two user facilities are out would be approximately 6 hours per year of total equivalent outage. In terms of the delivery of salable heat, the total system outage time would be about 55 hours per year. D. Design Decisions Made to Minimize Failure R iI Some of the design decisions that will be made to assure long life and reliability are the selection of corrosion resistant materials, the use of duplex pumps, and the use of isolation valves so a failure on one leg will not necessarily shut down the entire project. Where possible, flanges will be used for valves and all interior plant pipe will be welded to improve system reliability. Items which the reliability analysis shows are of critical importance will be duplicated if economically feasible. All connections to the district heating system are separated from the power plant Page 37 polarconsult Scammon Bay District Heating by isolation valves and a heat exchanger to minimize the consequences of a failure. User building heat will not be interrupted by a failure of the main district heating system, or by the failure of another user's system. The design includes the use of "Arctic" pipe which includes a steel carrier pipe butt-welded together and from 1 to 2 inches of insulation covered with a non- corrosive jacket. Two tin-plated copper wires are carried in the insulation to indicate the presence of moisture as an alarm. These alarm wires are read by a $1,500 alarm device which can connect to as many as four individual pipe loops. These devices allow for failures to be detected before they have time to become a major problem. They also minimize the time required to locate the failure and reduce excavation costs. At this time we know of no failures of this piping system in Alaska. Page 38 polarconsult Scammon Bay District Heating VII. Project Specifications A. Codes and Regulations The listed versions of the following codes and regulations were used in the preparation of this report: Uniform Building Code (1988) Uniform Mechanical Code (1988) Uniform Plumbing Code (1988) Uniform Fire Code (1988) National Electric Safety Code (1987) ooolmUodllUl8 B. DIVISION 01 - General Requirements This is a general information section covering the coordination of work, description of the work required for this project, regulatory requirements, definitions, payment procedure, submittals, quality control, materials and equipment, starting, testing, contract closeout and maintenance. C. DIVISION 02 - Sitework A. Support for the District Heating Module will consist of a cantilever in the back of the Butler building connected to the building floor joists. B. Module floor will be of wood frame construction insulated with fiberglass batt insulation, and covered with plywood on the top and bottom. SECTION 02700 - PIPED UTILITIES A. This section covers specific requirements, products and methods of execution relating to the water distribution system for the project. The interior piping is specified elsewhere. B. Distribution will be buried "Arctic" pipe with a steel carrier pipe, Page 39 polarconsult Scammon Bay District Heating polyurethane insulation and a high density polyethylene jacket. The pipe shall be I.C. Moller Plus pipe, or equal and approved. D. DIVISION 13 - Special Construction SECTION 13120 - Pre-Engineered Structures A. This section includes specific requirements, products and methods of construction relating to the district heating module for the project. The foundation is specified elsewhere. B. District Heating Module will be of wood frame construction insulated with fiberglass batt insulation, metal siding on exterior and plywood on the interior. Page 40 polarconsult Scammon Bay District Heating E. DIVISION 15 - Mechanical Outline Specificati SECTION 15010 - GENERAL PROVISIONS This is a general information section correlating mechanical work to other divisions of the specifications, defining terms, referencing codes and standards, itemizing submittal requirements, and defining submittals and information required for operation and maintenance manuals. SECTION 15050 - BASIC MATERIALS AND METHODS A. This section includes a description of specific requirements, products, and methods of execution which are typical throughout the mechanical work for this project. Additional requirements for the specific systems will be found in the sections specifying those systems, and supersede other requirements. B. Piping inside the buildings shall be type L hard copper or black sch. 40. Steel piping shall be welded and flanged. Valves shall be 150 psig. butterfly or gate for isolation, plug type for balancing. SECTION 15160 - NOISE AND VIBRATION CONTROL A. This section lists specific requirements, products, and methods of execution which relate to the isolation of all mechanical systems for limitation of transmission of vibration and sound to acceptable levels. B. All connections to engines and radiators, and between the power plant and the district heating module, shall be stainless steel flexible type. SECTION 15180 - INSULATION A. This section describes specific requirements, products, and methods of execution which relate to the insulation of ducts, pipes, and other surfaces of the mechanical installation. Page 41 polarconsult B. Scammon Bay District Heating Insulation is provided for the following purposes: Energy conservation; Control of condensation; and Safety of operating personnel. Piping inside the power plant shall be uninsulated. Piping inside the district heating module and user buildings shall be insulated 1" thick rigid F/G, with all-service jacket. Piping outside and between the Butler building and/or the engine-modules which connects to the heat exchanger will consist of i.c. Moller or equal "Arctic" insulated steel pipe. SECTION 15191 - OUTSIDE TRENCH EXCAVATION, BACKFILL, COMPACTION This section describes general requirements, products, and methods of execution relating to excavation, backfill, and compaction of utility trenches outside of buildings. SECTION 15600 - HEAT GENERATION A. This is a description of specific requirements, products, and methods of execution for interrelated systems, necessary for the generation of heat which will be distributed to the locations shown. The method of distribution of this heat is specified elsewhere. Heat generation (transfer) will be accomplished with stainless steel plate heat exchangers, as manufactured by Tranter, or equal and approved. Primary heat exchangers will be located in the district heating module and will interface with the power plant. Secondary heat exchangers will be located in the user facility and will interface with the user's heating system. SECTION 15650 - COOLING SYSTEMS Page 42 polarconsult Scammon Bay District Heating A. This section describes specific requirements, products, and methods of execution relating to the cooling systems for the project. The work of this section includes provision of systems and equipment for removal and transfer of excess heat from the locations shown, including the furnishing of interface apparatus and controls and the connection at interfaces with other mechanical systems. B. Generator cooling systems will consist of existing Young horizontal radiators, controlled by Volkman variable speed controllers. SECTION 15850 - BALANCING AND TESTING This section covers general requirements and methods of execution relating to the testing and balancing of the mechanical systems provided on this project. SECTION 15900 - CONTROLS AND INSTRUMENTATION This section describes specific requirements, products, and methods of execution relating to the system of temperature controls and instrumentation for the project. Page 43 polarconsult Scammon Bay District Heating F. DIVISION 16 - Electrical Outline Specificati SECTION 16010 - GENERAL PROVISIONS This is a general information section correlating electrical work with other divisions of the specifications, defining terms and indexing the various Division 16 sections, referencing codes and differences from Division 01 requirements, and defining submittals and information required for operation and maintenance manuals. SECTION 16031 - DEMONSTRATION OF ELECTRICAL SYSTEMS This section includes procedures to be used during final inspection, instruction of operating personnel, and a certificate of completion for the convenience of the Contractor and Owner to determine whether each item has been completed. SECTION 16040 - IDENTIFICATION This section covers labels and name plates for equipment, branch circuit panel board directories, and other identification needed for electrical equipment. SECTION 16050 - BASIC MATERIALS AND METHODS A. A major part of the electrical specification, this section covers the workmanship, coordination, and standards necessary for the electrical work. The products covered include raceways, conductors, and connectors. Installation techniques to cover various construction methods are noted so that fireproofing is maintained, water penetration and moisture migration through raceway systems are prevented, and the proper connectors are used for various conductor terminations and splices. B. Only copper wires and cables shall be used. Raceways shall be rigid galvanized, sherardized steel conduit or electrical metallic tubing with compression or set screw type fittings, for all conduits concealed in the walls, above the ceilings or exposed in work areas. Page 44 polarconsult Scammon Bay District Heating SECTION 16130 - BOXES, CABINETS, AND PANEL BOARDS A. This is a general section that outlines various standards to follow in the construction of these items, with specific notation on certain types of cabinets to suit various systems. Mounting heights for outlets and cabinets are covered in this section. B. Panel boards shall have copper busing with bolt-on type circuit breakers. SECTION 16140 - WIRING DEVICES A. Receptacles, switches, device plates, and special purpose outlets are covered in this section. B. All outlet devices shall be specification grade or better. SECTION 16150 - MOTORS AND CONNECTIONS Motor specifications regarding voltage, phase, and temperature rise are covered in this section. Distinctions between which motors and control items are included in Divisions 15 vs. contract or responsibilities are also shown. Appliance and miscellaneous equipment connections, whether owner- furnished or contractor-furnished, are covered to provide suitable connection techniques. SECTION 16160 - MOTOR STARTERS AND DISCONNECTS Specific requirements for overload and phase failure protection to be included in motor starters are covered. Also included is a listing of various devices suitable for use as equipment disconnects. SECTION 16180 - OVERCURRENT PROTECTIVE DEVICES This section contains a general listing of various devices suitable for overcurrent protection, such as circuit breakers, fuses, and current limiters. Page 45 polarconsult Scammon Bay District Heating SECTION 16190 - SUPPORTING DEVICES This section covers, in a general way, the various supporting, fastening, hanging, and securing techniques approved for use by the contractor in the installation of the electrical work. SECTION 16450 - GROUNDING This section itemizes complete grounding requirements and techniques for connections. SECTION 16480 - BRANCH AND FEEDER CIRCUITS This section clarifies drawing preparation technique as being diagrammatic rather than "as-built" and gives the contractor flexibility in conduit routing and circuiting, as may be determined by job site conditions. SECTION 16500 - LIGHTING A. Light fixture construction for both interior and exterior fixtures, lamps, and ballasts are covered in this section. B. Interior light fixtures shall be fluorescent, of industrial design. Exterior fixtures shall be high pressure sodium wall packs controlled by photocell. Page 46 polarconsult Scammon Bay District Heating VII. Project Cost Estimate A. Power Plant Heat Recovery System The first cost component is construction of the building to house the district heating system. This includes the mechanical and electrical equipment inside the module and the connection to the modified AVEC power plant as shown in Figure V-3 on page 20. The second cost component is the modification of the existing power plant system. This includes the connections of Unit #1, Unit #3, and Unit #4 to a common manifold and to the heat exchanger as shown in Figure V-3 on page 20. B, District Heating Distribution § The connection of the school complex to the district heating system includes installation of piping from the face of the district heating module to the school generator building, and all equipment and connections within the schools mechanical room, as shown in Figures V-8 on page 25. The connection of the water treatment building to the district heating system includes installation of the piping teeing off from the main line to the school to the water treatment building, and all equipment and connections within the mechanical room as shown in Figure V-7 on page 24. The connection of the three city buildings to the district heating system includes installation of the piping teeing off from the main line to the school to the buildings, and all equipment and connections within the buildings as shown in Figures V-4, V-5, & V-6 on pages 21, 22, & 23. C. Operation and Maintenance Costs Annual operation and maintenance costs are determined by the regular system maintenance required as well as the number of failures. Regular maintenance will be performed three times per year by a skilled maintenance crew. Day to day operation will be by a local person who will monitor the system and notify the maintenance department of any failures or problems. Repair of these failures will Page 47 polarconsult Scammon Bay District Heating result in an additional 0.88 trips per year to Scammon Bay by a skilled repairman. With a cost of $2,000 per incident the result is an average cost of $1,770 per year to repair failures. Cost of the three annual maintenance trips must be added to this failure repair cost to arrive at the total annual operation and maintenance cost. D. Project Cost Summary Total project costs for the three alternative concepts are shown below. Table VIII-A Summary of Alternative Project Costs Concept 2 3 a Water 3 City Bldgs. 3 City Bldgs. & Elem. Water & Elem. & Elem. Module Construction $62,628 $75,860 $76,878 Plant Piping Revisions $12,671 $13,282 $15,356 City Hall* <== $65,932 $58,666 Clinic os $66,784 $65,162 Head Start* aa $68,543 $70,715 Water Treatment Conn. $199,847 $134,936 o--- Elem School Conn. $234,978 $185,831 $206,728 Total Project Cost $510,124 $611,168 $493,505 *Note: Stub connections only with two valves and pipe caps. Total project cost includes design, supervision, inspection, administration and construction. The complete cost estimate is included in Appendix C of this report. Page 48 polarconsult Scammon Bay District Heating IX. Conclusions A. Heat Availability & Fuel C ; There are presently over 28,100 gallons of equivalent fuel oil per year available as waste heat at the Scammon Bay power plant. The district heating system can displace the following amounts of the proposed user heat requirements: Table IX-A Annual Heating Fuel Displacement & Pipeline Heat Losses Concept a 3 7 Water, City Bldgs City Bldgs, &Elem. Water, & Elem. & Elem. Heat off Engines 28,170 28,170 28,170 Annual Heat Loss in Dist. Pipes 4,210 4,210 3,699 Heat Available to User 23,960 23,960 24,471 Bldg. Heating Fuel Required 23,499 26,499 17,999 Amount of Fuel Displaced by District Heating System 18,972 19,631 16,510 Percent of Available Heat Used _ 79.2% 81.9% 67.5% During the winter months the five buildings connected would use all of the heat available, as can be seen in Figure IX-1 on the next page. Heat lost from an additional distribution pipe, to the recreation center, for example, would reduce the total available useful heat. This would make the recreation center a net loss to the system in the winter, if included, as the distribution line would remain heated but would provide no heat to the building during the winter. Page 49 polarconsult Scammon Bay District Heating Yb y YY Y : ) Zi. DSO SA x ORS LEEKS PIR Ronee FRR eee LLL ll Heat (Gallons of Oil) N SS 0 Sea “ a OOO Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Month BRS city Office ZZ Clinic DA Rec Center a Water Plant Elem School ~a- Available Heat Figure IX-1 Heat Available vs Heat Required <> oS 6 LY SS cones xx . | <e ron. | XS Ys Od = oS XS Q ee ee oS KS KX O25 eee ee SS x % a 6 % ee £3 6 xs 2 LQ , QO QO > ON xxS X22 8 es x Equivelent Gallons of Fuel % < oS eee 3 Re bese ROOSOSI oS EXXON OT KD os q RRR KOK Ey <Xxx PE ROORKEE RRR RRR ra oo IKI II RSS RK RRR RRR I FHI HH CR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Month Concept 1, 3 City Bldgs KS Concept 2, Water & Elem Concept 3, 3 City Bldgs, Water & Elem -a- Available © o 2 o, > bs sy J » +, OS or Figure IX-2 Gallons of Heating Oil Displaced Page 50 polarconsult Scammon Bay District Heating B. Project Cost Summary The school paid $1.15 per gallon, and the city paid $1.75 per gallon for heating fuel during 1989. The annual savings is computed using these costs for heating fuel. The two concepts are summarized in the following table. Table IX-B Project Summary Concept 2 3 7 Water City Bldgs., City Bldgs. & Elem. Water, & Elem. & Elem. Amount of Fuel Saved 18,972 19,631 16,510 Annual Savings $26,918 $29,476 $20,787 Total Project Cost $510,124 $611,168 $493,505 Straight Pay Back (yrs) 19.0 20.7 2 SeT, C. Project Summary The life of a district heating project is a function of availability of waste heat off the electric generation plant, the requirement for heat at buildings connected to the system, and system maintenance. The requirement for electricity and the need for space heat in the community imply an infinite project life. With proper maintenance the life of the district heating system will exceed 25 years. Because annual operational and maintenance costs and economic decisions will be made by AEA, final economic conclusions are not presented in this report. The straight payback time for the best alternative, Concept 3, is 20.7 years. Page 51 polarconsult Scammon Bay District Heating APPENDIX A Calculations polarconsult Scammon Bay District Heating Power Plant Heat The amount of heat required to keep the power plant building at 65°F was calculated. The number of air changes in the building was assumed to be equal to the amount of combustion air required by the engines plus 2. This added up to 7.25 air changes per hour in the Scammon Bay power plant. The conduction heat loss was then added to the infiltration heat loss and the amount of heat rejected to the ambient air off the engine subtracted to come up with the hourly heat requirements for the building. User's Monthly Fuel Oil Usage The annual fuel oil usage, as obtained from the users, was distributed over 12 months using the number of heating degree days (HDD) as follows: School (Monthly HDD) x (Annual Fuel Consumption) Monthly fuel oil usage = = --------------------------------------2 2-2-2 = 2 n nn nnn nnnn nanan ( Annual HDD ) Water Treatment Building (Monthly HDD) x (Annual Fuel Cons. - 12 x 354) Monthly fuel oil usage = 354 + ------------------------------------------------------------- ( Annual HDD ) Displ. The amount of waste heat available at the power plant and the amount of heat required by the user were calculated using a computer model with the following input and assumptions: 1. Historical monthly power generation data for the power plant, annual users' heating oil consumption, and monthly heating degree days were input. 2. The amount of heat available off the engines versus power production, from the engine manufacturer's data, was input. 3. The heat losses for the proposed piping system, plant heat, etc. were input. 4. The hourly diurnal power generation variation per month and the hourly diurnal heating requirements were input to distribute the power and heat data over a one- year period in the model. 5. The amount of heat usable by the proposed users is summed up for each month to determine the equivalent number of gallons of oil which will be displaced by the district heating system each year. Page 1 polarconsult Scammon Bay District Heating Program Notes: a. The amount of heat available off the engines listed in Table III-A is from the engine manufacturer's engine specs. The amount of heat available off the engines used in Appendix A comes from the engine manufacturer's test data which they indicated was good to 7 5%. We used 95% of their test data values for use in Appendix A as the heat available off the engines. Note that units in Table III-A are Btu/min and unit in Appendix A are Btu/hr/kwh. Page 2 WASTE HEAT UTILIZATION SIMULATION WORK SHEET Location Scammon Bay 06/21/90 Date: Jun-90 GENERATOR DATA: Cummins LTA 10, 1,800 RPM 12:55 PM Output Heat To Heat To SYSTEM LOSS DATA: Flow Rate 95 gpm kw Coolant Ambient 95% Constant losses: Heat rate at kw-load above: Q 3,875 689 (BTU/HR) / (KWH) Plant piping: QO Btu/hr. Heat rate at kw-load above: 45 3,875 689 (BTU/HR KWH) Subsurface pipin 7, a0 Btu/hr. Heat rate at kw-load above 90 3,014 $74 (BTU/HR) / (KWH) Engine preheatin QO Btu/hr. Heat rate at kw-load above 134 2,679 536 (BTU/HR)/ en Total constant: 7,480 Btu/hr. Heat rate at kw-load above 179° 2,512 520 (BTU/HR) / (KWH Heat rate at kw-load above: 187 2,446 $17 (BTU/HR) 1 ew) Variable losses: Heat rate at kw-load above: 187 2,446 $17 (BTU/HR) / (KWH) Surface pipang: 0 Btu/hr.xF Heat rate at kw-load above: 187 2,446 $17 (BTU/HR) / (KWH) Plant heating: 1, 189 Btu/hr.xF Heat rate at kw-load above 187 2,446 $17 (BTU/HR) / (KWH) Radiator losses: 50 Btu/hr.xF Heat rate at kw-load above 187 2,446 517 (BTU/HR) / (KWH) Heat rate at kw-load above: 187 2,446 517 (BTU/HR) / (KWH) Jan Feb March = April May June July Aug Sept Oct Nov Dec Annual GENERATION DATA: Kwh/Mth: 79,000 67,900 72,400 65,000 57,500 44,000 47,300 59,500 61,200 67,000 73,900 76,200 770,900 WEATHER DATA: HDD/Mth: 1,742 1,728 1,475 1,283 834 415 357 425 618 1,086 1,381 1 ie 13,055 BUILDING DATA: Pipe Pipe Heat Pipe Fuel use, Non- In Boiler Dist. Dia. Loss Loss gallons SeasonalSeasonal Use ? Effic. (FT) (IN) (Btu/Ft) (GAL/YR) City Offic 1,000 9 HL 0.73 85 1.0 13.36 334 Glific 700 0 1 O73 100 1.0 13.36 393 Headstart 1,300 0 1 0.73 95 1.0 13.36 374 Water Plan ° 0 oO 0.73 oO 2.5 20.66 2,243 Elem Schoo ° 0 QO 0.73 Oo 2.5 20.66 2,597 Rec Center 0 0 0 0.73 O 1.5 16.42 938 Building in use; l=yes, O=no Assumed Diurnal Heat Power Plant Production & Hourly Variation Demand Variatioi Winter Summer Hour: Jan Feb March = April May June July Aug 0.039 0.039 i. 0.038 0.038 0.038 0.038 0.044 0.044 0.044 0.044 0.044 0.044 0.038 0.038 0.038 0.038 2 0.036 0.036 0.036 0.036 0.039 0.039 0.039 0.039 039 9.039 0.036 0.036 0.038 0.038 3 0.034 0.034 0.034 0.034 0.035 0.035 0.035 0.035 +035 0.035 0.034 0.034 0.038 0.038 4 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.038 0.038 5 0.033 0.033 0.033 0.033 0.034 0.034 0.034 0.034 0.034 0.034 0.033 0.033 0.039 0.039 6 0.034 0.034 0.034 0.034 0.037 0.037 0.037 0.037 0.037 0.037 0.034 0.034 0.041 0.041 7 0.038 0.038 0.038 0.038 0.037 0.037 0.037 0.037 0.037 0.037 0.038 0.038 0.043 0.043 8 0.042 0.042 0.042 0.042 0.039 0.039 0.039 0.039 0.039 0.039 0.042 0.042 0.044 0.044 9 0.042 0.042 0.042 0.042 0.044 0.044 0.044 0.044 0.044 0.044 0.042 0.042 0.044 0.044 10 0.047 0.047 0.047 0.047 0.046 0.046 0.046 0.046 0.046 0.046 0.047 0.047 0.044 0.044 11 0.048 0.048 0.048 0.048 0.039 0.039 0.039 0.039 0.039 0.039 0.048 0.048 0.044 0.044 12 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.045 0.045 13 0.045 0.045 0.045 0.045 0.049 0.049 0.049 0.049 0.049 0.049 0.045 0.045 0.044 0.044 14 0.047 0.047 0.047 0.047 0.051 0.051 0.051 0.051 0.051 0.051 0.047 0.047 0.043 0.043 15 0.048 0.048 0.048 0.048 0.049 0.049 0.049 0.049 0.049 0.049 0.048 0.048 0.043 0.043 16 0.048 0.048 0.048 0.048 0.049 0.049 0.049 0.049 0.049 0.049 0.048 0.048 0.043 0.043 yi 0.049 0.049 0.049 0.049 0.044 0.044 0.044 0.044 0.044 0.044 0.049 0.049 0.043 0.043 18 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.043 0.043 19 0.043 0.043 0.043 0.043 0.049 0.049 0.049 0.049 0.049 0.049 0.043 0.043 0.043 0.043 20 0.038 0.038 0.038 0.038 0.044 0.044 0.044 0.044 0.044 0.044 0.038 0.038 0.042 0.042 21 0.038 0.038 0.038 0.038 0.040 0.040 0.040 0.040 0.040 0.040 0.038 0.038 0.042 0.042 22 0.041 0.041 0.041 0.041 0.040 0.040 9.040 0.040 0.040 0.040 0.041 0.041 0.040 0.040 23 0.045 0.045 0.045 0.045 0.040 0.040 0.040 0.040 0.040 0.040 0.045 0.045 0.039 0.039 24 0.040 0.040 0.040 0.040 -042 0.042 0.042 0.042 0.042 0.042 0.040 0.040 Power year factor at Year no. QO Seasonal cons., gls 3,000 Non-seas. cons.,gls. Q Compound boiler eff 0.73 Jan Feb March = April May June July Aug Sept Oct Nov Dec Annual pays 31 28 31 30 31 30 31 a 30 31 30 31 365 HDD: 1,742 1,728 1,475 1,283 834 415 357 425 618 1,086 1,381 1,712 13,055 kwh 79,000 67,900 72,400 65,000 57,500 44,000 47,300 59,500 61,200 67,000 73,900 76,200 770,900 Gallons of Oil used per oneal catane Building Jan Feb March = Apr. June July Aug Sept Oct Nov Dec Annual City Office 133 132 113 98 64 27 33 47 83 106 131 1,000 Clinic 93 93 79 69 a3 2 ae 23 33 $8 74 92 700 Headstart 173 172 147 8 83 41 36 42 61 108 138 170 1,300 Water Plant 0 9 9 9 0 0 0 0 0 0 9 9 0 School oO QO QO QO QO 0 o 0 0 0 0 0 o Rec Center 0 0 0 0 0 0 0 0 0 0 0 0 0 Total Use 400 397 339 295 192 95 82 98 142 250 317 393 3,000 PAGE 1 OF 3 TANOH unwTxeW TINOH wNuTKeW MM yPed ATINOH unutTxen & peoetdstd jeeH ATINOH unuTxeW eTaeTteay 3eeH pueueg 3eeH € 30 2 goWd shpta AaT2 € suoTTes 6ee L6E 00b Tene Oct Te s6z w © nN S6 osz eT 86 ETE Z6T‘9E O6T‘6Z £9622 BbSO‘ET €6e 000‘¢ qdeouop T S,OLe bis ‘9e 925 ‘9E ! ' ! 1 1 1 1 1 1 1 1 a a! at a! NI @! ! 1 ' LL6‘8 9b6°SLZ & NNN EERE BEE 6 BWNPOCOIDUSWNFOOBIAUBRWNE IH a P_OINTUN NAN Nb | UROOP ERE RPPNONNNNEONUTUDS | 5 9) DQANUNUNATAAANAA AAA ATIA SOU 1 ER EAAADAAANISOIIIAS OOOOH! 7 4 VALS. 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' ' WNWWLNNWNNNNNNNNNWNNNNN: NBWOODNHOOOOHBOOOANHNO IN IID NOCAAIDACGOCWOWOWOCOP WHO RVNNVWWWWWWNWWNWONNNNNNNYW DIIIOGHOGwIONAPOAUUNNYAD SINAN IOE IIE IOUUP OER Oonae RNNNYNNYNNANANNNANAE EEE ENN REP WDRWADIDUNCSWOOORBDOW DUNNUNDNOOAAINNG OOOO OHH DOO RNNANYNNNNNANNANANNNNEEENN WNNNBIDSIVOIAHASHOOMBOHS DPPH OICMOIIOGCIDBODOAAHAOONWDO RYNNVONWWNRNYNNWNWWNNNNNNNW WOBDOPE ING IIOIGINEIAAWW SIE OS DALAPOSPENEHAIOSINNOOSIS WWWWWNNWNNWNNNNYWNNNNNNNW FPOCOWODWHHOD IOAGHOIINUDOW SNNVNGIOOIIGINS COS OOSEANBW WWWWNWNNWRLWYWNNWNNNNNWN WEEE IODICOPOCP OUP OONDAIE NDDDOWHOOOADAGOOSOOWWHHHACS RONVNVWWWWOWWWWWNNNWNWWWN DH ONVNON SSB WH WB WOON OOON OV COOAAVGUNICONBNON MUI WW ~10y eTAeTTeAe eOH anoH oreW ag uep q a &q aznoy zed (S,ML@ 000‘T) YuOU TTadw LOU3HS WHOM NOILWINWIS NOILWZITIIN IWaH ZLSWM lanuoD - sbpta Aat> € 1 WASTE HEAT UTILIZATION SIMULATION WORK SHEET —- 1 3 City Bldgs Scammon Bay ** Main HE ** ** User HE ** 06/21/90 * Hot * * Cold * * Hot * * Cold * Temp. In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 7.27 Gpm (Max Heat Demand) /8,000 Cale. 6.58 6.59 5.73 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.34 63.53 63.78 62.40 lb/ft*3 Spec Heat 0.863 0.859 0.854 1.004 Btu/lb F Ther Cond 0.233 0.234 0.234 0.383 Btu/Hr Ft F Viscosity 0.759 0.819 0.900 0.425 CP Pipe Ground Temp. In 190 Temp out 180 T Avg. 185 deg F 30.0 deg F Flow 7,27 gen Length 280 to: Clinic Size 1,0 in 0.08333 feet Heat Loss 13.36 Btu/Hr/Ft Heat Loss 3,740 Btu/Hr 3,740 Used above Velocity 3.36 Ft/Sec Friction Factor 0.0619 From Calc. Below Pipe Head Loss 17.79 Ft Darcy-Weisbach Pipe Head Loss 7.71 psi Calc. PAGE 3 OF 3 5 PM 95% 365 13,055 770,900 3 Annual 770,900 13,055 Annual KWH KWH KWH KWH KWH KWH 7 (KWH KWH KWH 12 / (KWH / / / i / OPPO FOUN OPN DMDAHOM MOHAN MMMM TSF TTI TTI TTT ITO TTS OOO0000 IDOOOGOGG00000 QQ00000 (olelololelololololololole i, (/HR) / (KWH / 31 1,712 76,200 (BTU/HR Dec Dec Dec (BTU/HR) (BTU/HR, BTU/HR BTU/HR, BTU/HR; jBrosHe BTU/HR (BTU, 1,712 0.038 OTTO SFO VAR OM IN DOHOMOMM-NO MOMMY PP GGT TIT TTT TOOTS OOOCCOSG000G00000000000 OOCCCSCCCCGC00000000000 30 1,381 73,900 689 (BTU/HR)/ Nov 689 (BTU/HR; i 3 2 1 1 iz 1 1 1 Nov Nov 038 LOLI NALA IID 1,381 73,900 76,200 0 DOG IHS ATONNAIAATONTOOON MOMMMNNMNTTOTTNTTST TTS OSOOOGOGS00000000000000 OCCCCSCDCCCDCCCC00000000 MNTANOOBBOOWO CedtdesseCo wDnovnwee res AMONANNNNNA Oct 000 Oct 044 Oct 31 086 , 1,086 1 67,000 Heat To Heat To QO PPO ATPONNAGHATONTOOON AMMO SIO GTO GT GTS TT TSS DOOOOGGGG00GGG0000000 DOCOOSGSCOGSSSSGCCCC0000 omosorreneenne TAM ODDO ddddddded kw Coolant Ambient 200 67 618 044 039 035 30 618 61,200 Sept Sept Sept 1,800 RPM ° Output TOM TTR ATONRAGAATONTOOON TMOMNMNMNNTIMNTTOsT TTI TTS SSOSCSSSOSGSSG0S000000000 folelolololololololololololololololololololololo) Aug 425 Aug Aug 31 425 7500 61, PIO ATOARAAAATONTOOON MOMMMNMTTIN TINT TT SS TSS 00000: IOOOSSSSSCG0GG OOCCCO: IDOOCOSO900000 load abovs load abov: load abov: 300 59 357 ly an 357 47,300 59,500 July , 0.044 0.039 OPTS ANPONNAAANTONSTOOCON AMON M OST POS TOSI IST TSS IOOQOOGGOGGGG000000000, OOOOOSGSCGDG00C0000000, ooo 47 415 039 44,000 415 Pipe OSS 3 2 3 9 June (Btu/Ft) (GAL/YR) City Offic Clinic June L , ter Plant & Elem School 0.044 0 DOT IL ATONE AAAANTONTOOON MAMMMMNOMNTINOT TOTS TTT QOOOSO: OCCGG00000000 OCCCDCCC00000 Heat rate at kw-load above: Heat rate at kw-load above: Heat rate at kw-load abov Heat rate at kw-load abov Heat rate at kw-load abov Heat rate at kw-load above Heat rate at kw-load abov Heat rate at kw-load above: Heat rate at kw- Heat rate at kw- Heat rate at kw- Flow Rate May S00 44 834 May 044 834 57,500 May , Q Q. 0 0 0 0 0 GENERATOR DATA: Cummins LTA 10, 57 Gallons PIMNTOANLOrNMNLMDAOMMoOHNO MMMOMMTT TTT TTT TONS OSCOCOGGG6G000000000000 [oYololololololololololololololololololololo) 000 7283 pe as (IN) 038 036 , 0 QO. 1,283 72,400 65,000 April April April July Concep' 1 jer month SPIO SOUR OM Nr ODAOMBOMHIND OMMOMMO GIP TTT TT TTI TS DOOOGGGGG000000000000, OCCODCDCSSCCCCCCC0C0C0 March 1,475 March 0.038 0.036 31 1,475 March Marc’ 72,400 65 WOPIOTOVAL ON DDAOMBOANO MMMMNNMT TIS T TSS ST OOOOGCO'! OOCCGSSG00000 IOOOO0CO SPCOCCG0CC0CO Feb Feb Feb 28 728 900 Feb , , 1 0.038 67 Btu/hr. Q Btu/hr. 44,206 Btu/hr. 1,728 OPT ATFOAUAL ON DOHAOMODHAND AOCOM OOO MOF PPT TET TT TOO Tt é~ OOOCOGGGGG0000000000000 . a 8) (6) c6 181 6) U6 COTES 6) 10) Te) Te Te Teen eL eiieris o OOCCSOSGSESGCDCOO0000000 oO jipin 44,206 Btu/hr. Ein $0 Btu/hr.xF 1,167 Btu/hr.xF 50 Btu/hr.xF ae os ~ a Jan 1,742 In Jan 0.038 Jan Jan Power Plant Production & Hourly Variation 79,000 79,000 67,900 Gallons of Oil used e a a = an % x = Zz ° 4 & < 3 ANM TNO OHOdAM TNL AROdAMS At AANA Non- Hour ng SeasonalSeasonal Use ? P. ea’ Radiator losses Y iping eet Kwh/Mth HDD/Mth iping ace preh al constant DOOOA AMT IPE TOPTAMMMMMANOD MOMMMOMTI TTT IIIT TTT TTS OOSBGCGGG0G00000000000, OCCCCDCCCCCCCCC00000000 ine oO 0 Oo 0 a ° Summer 0.039 cons., City Office Clinic Water Plant Building School Scammon Ba Jun-90 Subsur. Surface Plant he Headstart Plant En To DDDOOA AMT TP ITOASMMMMMMANOD OMMMOM SIPC GSI PITTI IT ITT IT IO SSOO000G0000000000000000, eooceceeeCCCCCCCCCCSCCC000 Building in use; l=yes, O=no Winter WASTE HEAT UTILIZATION Assumed Diurnal Heat Demand Variation: Seasonal cons., gl. Compound boiler e. Power year factor Non-seas. SYSTEM LOSS DATA: Year no. 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I RNNVYNANNNNNNNNNNNANNNNANNN | O WDDDVIAD AWARDING ISWITUWWWIW | A DHE ERATE ANON IRAE HOWE | i RNNNVNVNYWWWNYNNWNNNNNNAANNN | Z PONWVWAOGHOOWDOGOWNAWIAIIOW | O DUWHEHDOWUUTOUBUOHHHWAWWME | < 1 1 ' RNVVVNYNWWWNNNYWNNNNNANNNN | DO POUNNADHOOWDOOWOUUN TATION | SPPOOADOVUAPAUAVOOHNEHOG | 0 1 1 ' iB is 1s 1p Ie 1 LAgHS WHOM NOILWINWIS NOILWZITIIN LW3H GLSYM Jooyos weTy F AUeTd TSeIeEM Z Aeg uowweos EAT UTILIZATION SIMULATI - Concept: 2 Water Plant & Elem School Scammon Bay ** Main HE ** om 06/25/90 * Hot * * Cold * * Hot * * Cold * Temp. In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 40.45 Gpm (Max Heat Demand) /8,000 Calc. 36.60 36.68 45.33 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.34 63.53 63.78 62.40 lb/ft*3 Spec Heat 0.863 0.859 0.854 1.004 Btu/lb F Ther Cond 0.233 0.234 0.234 0.383 Btu/Hr Ft F Viscosity 0.759 0.819 0.900 0.425 CP Pipe Ground Temp. In 156 Temp Out 180 T Avg. 185 deg F 30.0 deg F Flow 40.45 gpm Length 1070 fe to: Water Plant Size 2.5 in 0.20833 feet Heat Loss 20.66 Btu/Hr/Ft Heat Loss 22,103 Btu/Hr 22,103 Used above Velocity 2.16 Ft/Sec Friction Factor 0.0467 From Calc. Below Pipe Head Loss 17.22 Ft Darcy-Weisbach Pipe Head Loss 7.46 psi Calc. PAGE 3 OF 3 95% 06/ 12:39 PM Scammon Bay kw Coolant Ambient & Elem. Output Heat To Heat To 1,800 RPM 95 gpm 3 3 City Bldgs, Water Plant, GENERATOR DATA: Cummins LTA 10, Flow Rate Concept Y Scammon Ba’ Jun-90 WASTE HEAT UTILIZATION SIMULATION WORK SHEET Location Date SYSTEM LOSS DATA: KWH KWH / (KWH (STUHR / BTU/HR) (BTU/HR) (BTU/HR (BTU/HR BTU/HR BTU/HR BTU/HR BTU/HR BTU/HR 689 689 574 36 2 1 1 1 iT 1 1 oad above oad above ky ky Heat rate at kw-load above Heat rate at kw-. load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at Heat rate at ay Cag Eng \ x FSB By YB | cccc scc mrss OS {| ss335 ssc 1 bbbD Low | anam mam 1 Ow08% oro 1 oO MoH ,; an ) ! .s a | = ! ec . 1 wiviee oe 1 Oe Ded 1oedge Sow 1 oo00 eu 1 & cy ario 1 aOOn ALG 1 BONG Qe 19 2.0 On OM 'O oc0 - HO) OD MVIEd UGG 1OCadg oned 1ugany und fadgco wsag 1Omaue ona \q 4 12 © 1c 4 1a a Io 9 1a 4 18 s 10 > Annual 770,900 13,055 Dec 1,712 Nov 7900 76,200 7381 i Oct 1,086 Sept 618 Aug 425 July 357 415 pe Oss June Pi 44,000 47,300 59,500 61,200 67,000 73 L May 834 Loss (Btu/Ft) (GAL/YR) Ma Heat April 72,400 65,000 57,500 1,283 h = April 1,475 March b Feb 1,728 Jan 7000 67,900 1,742 Power Plant Production & Hourly Variation O=no Kwh/Mth: 79 HDD/Mth Non- SeasonalSeasonal U: 1,000 700 1,300 4,250 0 Building in use; l=yes, s Winter City Offic Clinic Assumed Diurnal Heat GENERATION DATA: Elem Schoo 15,001 Demand Variation: WEATHER DATA BUILDING DATA Fuel use, gallons Headstart Water Plan Rec Center WOT TOTO VAS OM IN DOHOMBHOANO MMMMMNMT TTT TTT ITT IONS IBODOODOGGGGGGGGGG0000000, DOOGOSSOSSSSCCCCCCCSCC000 WOT TO TOV OMI DORHOMMHOMH4NO MMMMNMT TTT TTT TT TONS OOCGG06G000000000000 OCCCSSSG000000000000 DOSS ATPON AIGAATONTOOON MAMMMMNMMOTINT TOT TTT STS OOOOOOGGOGG00000000000, IDPDOCECCCCCCCCCCCCCCCCO DOGS ANTON-AIGANTONTOOON AMMOAMOMNT GAT GOT GIST TITS OS000" 5000000000000 ODOC. 2000000000000 DOP IALADTPONMAGAATONTOOON MMMOMMOMTTIONT COT TIT ITTTSS IDOODVOOGGOGGGGGGGG00000 IDOCDOSCCCCOCCOCCCCCOCCCCCO DO SIAL AT ON AGANTONTOOCON MAMAN T POT TOT SSSI TTS IPOOGOOGGG00000000000000, lolefololololololololololololololololololololo} DI SFT NTO AM DAO) MOMMMMM GT TMT TOT OOCCOGCGG00000, eooeoCCCCCCCCCC0C00 DOPFIROATONNAGAATONTOOON MAMMMMOMTTINT TOTTI TITSTTS IDOOOOSSSSSSG0G090000000 folololololololololololololololololololololololo} QDOTIMNTONAL OP NL DDAOM@AaANO MMNNNNNTT VI TTT TTT TIONS BOOOGGG60000000: OOCOC000000000 WPT TONE OPN DOHOMBDMH4NO ONNNNMT TTT TTT TOOTS OOCOOGGGG0G000000000000, SCCCCCODSGOSCCCC000000000, WTIM FOUN OM NE DMAOMaHANO MMMNNNM TITS TTT TONS IOOOSOGGGG0000000000000, IODOOGECCCCCCCOSCCCCCCCCO WOT TMP OVA OM N-DOHOMDOANO MMMM ST TTT T TT TT TOMS OOGOCG00G0G0000000 BOOOOCSOCCS00000000 INMPTMNO-DHNOAAMTNOMOAOdAMS Att AIA ANN DMDDAAMT TIT GTOPTMMMMMMANOH MMMM TT TTT TST O0000000000000 ooo POOOCSSSSSCCCO' ooo DODDOAIM TIT TO ITIMMMMMANOD MONNNNMNTT TITS IIe T TTT OCCOC9G00GSS0G00000000000, eccoccccoCCCCCCCCCCCCCCSCO Annual 365 13,055 770,900 31 Dec 1,712 30 1,381 73,900 76,200 Nov 31 Oct 1,086 Sept 30 618 Aug 31 425 at 357 47,300 59,500 61,200 67,000 July June 30 415 31 834 7000 57,500 44,000 May April 30 6 7283 March Feb Jan ae cons., Compound boiler e Power year factor Year no. Seasonal cons., Non-seas. 553 863 1,492 2,356 2,898 3,509 26,499 584 Gallons 1,354 4 2,718 3,071 3,538 MmMMAano Maras a AON “ Ji 3,563 Gallons of Oil used per month Water Plant Rec Center Total Use Headstart School City Office Clinic PAGE 1 OF 3 TINOW uMUTXeW TINOH uMUTXeW TINOH unuTKeW My yee AtznoH unut xen K eTqeTTeAY 3e8H pueweq 3PeH dstq qeey A peoet! € dO 2 39Wd ess bes vse ‘Tt T86‘T B8LT‘2 Sb6‘T $922 suoTTeDeIeMm ‘shpta AaTO € 2SL‘ES OSS‘HZT SBT ‘ZBT 98Z7‘00Z E98‘BLT £62 ‘802 080‘2 zep‘T £98 Z99‘SO8‘T L86‘TOZ LS6‘96T EOE ‘TET SHZ‘LET bIb‘6L Sz8‘0S Tet ‘z 961 ‘Z TE9‘6T qydeouop e s,ALa 1 = 1 @ te tie 10 NNNNNE PEEP RReE leo PWNPOCDIDULWNHOODIDUSWHH H n Pe | & 1 NRVNNNNWWWWWNWWWNHNNNNNNNN 1 GO MODWWIONHFOWCOPOSIWOIOONMW | PA Pe re ot at ted La tS t 13 NRNVNNVVNWNNNNNNNNNNNNNNNN | NC Renee herer secret a PL SUaweabeessusesmasnonaee | Er g #3 mesesnsraatenatonsonarocsansrotsonensnsne| BS seonntarenetaneesesesnerenstsmetsnesnaats | Ge Eee eemcoenSRe ee aReee | IS 3 ze reropsrangronnsronnatarsnnrrsunnsne |B spctarara oeenesteesneereUN TN | BE Sibsssuccomnemassmemnatele™ a S : BERR RBBB BEBE BREE QHADIIIIIII III gH THOOO SEN BONODAADASUAWH WE Key ! ! ! 1 ! 1 ! 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Scammon Bay ** Main HE ** ** User HE ** 06/25/90 * Hot * * Cold * * Hot * * Cold * Temp. In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 40.45 Gpm (Max Heat Demand) /8,000 Calc. 36.60 36.68 51.06 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.34 63.53 63.78 1lb/f£t*3 Spec Heat 0.863 0.859 0.854 Btu/lb F Ther Cond 0.233 0.234 0.234 Btu/Hr Ft F Viscosity 0.759 0.819 0.900 cP Pipe Temp. In 190 Temp Out 180 T Avg. 185 deg F 30.0 deg F Flow 40.45 gpm Length 1070 Fe to: Water Plant Size 2.5 in 0.20833 feet Heat Loss 20.66 Btu/Hr/Ft Heat Loss 22,103 Btu/Hr 22,103 Used above Velocity 3.16 Ft/Sec Friction Factor 0.0467 From Calc. Below Pipe Head Loss 17.22 Ft Darcy-Weisbach Pipe Head Loss 7.46 psi Calc. PAGE 3 OF 3 43 PM 06/21/90 12 Scammon Bay 1,800 RPM Cummins LTA 10, 4 Elem School GENERATOR DATA Concept: fy: Scammon Ba Jun-90 WASTE HEAT UTILIZATION SIMULATION WORK SHEET Location Date 95% ’ ’ ’ ’ ) ’ ) ) ’ ’ ) Annual 13,055 Annual 365 13,055 770,900 14,999 9,000 67,900 72,400 65,000 57,500 44,000 47,300 59,500 61,200 67,000 73/900 76,200 770,900 / 4 74 ie BTU/HR) / 517 (BTU/HR) / / | | SOTOVAE OPN DOHOMODAND MMNMNMTT TTT TSTMS SCCSGGGGGG0000000000 OoCCCCCCCCCCCCCCCCCCCO (BTU/HR) / BTU/HR) / BTU/HR) / (BTU/HR) / Dec 76,200 1,712 034 Dec 31 1,712 73,900 76,200 2,204 BTU/HR) BTU/HR BTU/HR: BTU/HR BTU/HR, OTTO SONA ONE DOHOMOOAND MOMMMNNOTTIT TTT TIONS TS 299900909960960000' 689 689 $74 $36 520 7 1 1 1 1 Nov 7900 7381 Nov 30 1,381 1,777 73 i PPS ATPONM ADAVHANTONTOOON AMMO FPO TTT PTI TT TSS SOC0C9G000000000000000, [oYololololololololololololelololololololole} NTA OOO 0\10 Cites OoONT TK ANNAN 875 Oct 1,086 Oct 33 086 , 000 1,398 OV oO oO: oO 3, Heat To Heat To 2 67 kw Coolant Ambient 45 1 1 1 1 1 1 1 1 1 1 1 ' 1 ! 1 ! 1 1 1 1 ' ' ' ! 1 1 1 1 I lomovgarrennnr 1 ‘GVO co c..0 00 0—0 1 ddtdtddtetetet 1 1 ' 1 1 1 1 1 1 1 ' 1 ' ! ' ' ' ' 1 1 1 1 1 ! ' i ' ' ' ' ' 1 1 1 Sept 61,200 67,000 618 Sept 30 618 61,200 795 Output DNPH ATONE AAHATONTOOCON MOMMMMOMMTINT COSTS T ITS TS OCCODGG0GG00G000000000 OOOCCSGOSGSCGGCC000000 Aug 425 Aug 31 425 273 load above 0 95 gpm Heat rate at kw-load above Heat rate at kw-load above: Heat rate at kw-load above: Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above: Heat rate at kw-load above: Heat rate at kw-load above: Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw- DPI ADTONNAGAATONTOOON OAMMMOMMPFIOT GOTT GGT TIS ST OCOOGOGOGG0G0000000000 IDOOCOOSGOSGOG0000000000 31 S57 47,300 59,500 357 July July 47,300 59,500 0 DNF IH AO ATOANNAGAATONTOOCON MAMMMNNMTTOTTOTTsT SSS QOOSG0GH9G6000066000000 ISodcdcodddddddddddddc June 415 pe OSS June 30 415 44,000 44,000 Pi Li WIPO ATONNAGHNATOATOOON MMMM PFIOT GOTT GTI TITS 2D9990090009000600000080 Nolelololololololololololololololototololol) Flow Rate May 834 May 31. 834 537 Heat Loss (Btu/Ft) (GAL/YR) FTO TOAUAE ONE DONOMBOANO MOMMMMGTTT TTT TTT TTS IDOOODGGGGGGGG0G0000000 JDOOOOSSOGDGSNCSCNCC000000 30 1,283 72,400 65,000 57,500 April 1,651 e Dine (IN) April 1,283 Piy SCIOTO ONE DOHOMBHAND MOMNNMT TET TT TIT TSTMS OOCSSSOGG0G000600000000 OCCOSCOGSOGGG000000000 31 475 , 13475 March 1,898 March a OPPO TOUR OM Nr DODHOMBOHINO MOMMOMNMNGT TTT TT TTT TONS 29O90080908900008500800800 SoccccCCSSScGCsGGccCCG 28 900 72,400 65,000 57,500 1,728 Feb 1,728 Feb 2,224 QO Btu/hr. ipin 38,836 Btu/hr. Q Btu/hr. 38,836 Btu/hr. MMMNNMNTE TTT TTT STS STON TS OOOOSGG0GG000G0: oo9eo : cette eer ere eee Srp ar o SOOOOSOSGCCCSSGO: Socco 31 1,742 79,000 67,900 $0 Btu/hr.xF 1,167 Btu/hr.xF 50 Btu/hr.xF Jan Jan 2,242 Gallons of Oil used per months Gallons 79,000 67, 1,742 In Power Plant Production & Hourly Variation ANMTMOrOHNOAAMTNOLOROGAMS AA AAA AAA AA ipin ng Radiator losses HDD/Mth: Kwh/Mt ce nis 1 ' ' ' ' ! ! ' 1 1 1 1 ! 1 ' ! ' ' ' ! ! ' ' 1 piping ace Dp. prehea al constant: 0 0 Q 9 1 0 DODONAEA PO FMMMMMMANON OOM GIP GAGS PGS PGT TTT ITIO O0SS0S000000' OOCCO IOOPOOOSSSGCCGO: OCC Summer "9.039 -0.039—S ine 0.038 Y eens og Compound boiler eff.: ' 1 1 1 ! 1 1 1 1 1 1 1 1 ! ' 1 ' ' ' ' ' 1 ' ' ' ' ' ' ! 1 1 1 1 1 ' { 1 i ! ' ! i ' ' ! 1 | 1 1 ' ' ! 1 1 { ' 1 ! i ' ' 1 ' ' ! ! \ ' ! 1 { 1 1 1 1 1 1 1 i} ' 1 1 ' ! 1 1 ' 1 | ! 1 ! 1 1 ! ' ! ! 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RNYNNNNNWWWWNWWWNNNNNNNNN | Z ADNWWIOH HH ODOHONAW~I0\JIWW | O FPDODDWADHHWDWHWADAOOOODD | < t ! RYNNNNNWWOWWNWWWNHNNNNNNNN | O POUNWWIOHOCODOOCODHAWAD I IOW | O Se skcunneacseaeteeertee | E ' ! z if tc 1m te ' LAKHS MYOM NOILWINWIS NOIIVZITIIN LY3H ALSYM aydeouop - Tooyss weTa » Keg uouuess WASTE HEAT UTILIZATION SIMULATION WORK SHEET —- Concept: 4 Elem School Scammon Bay ** Main HE ** ** (Oser HE) 2 06/21/90 * Hot * * Cold * * Hot * * Cold * Temp. In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 38.74 Gpm (Max Heat Demand) /8,000 Calc. 35.06 35.13 32.10 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.53 63.78 62.40 lb/ft*3 Spec Heat 0.859 0.854 1.004 Btu/lb F Ther Cond 0.234 0.234 0.383 Btu/Hr Ft F Viscosity 0.819 0.900 0.425 cP Pipe Ground Temp. In 190 Temp Out 180 T Avg. 185 deg F 30.0 deg F Flow 38.74 gpm Length 940 Fs to: Elem School Size 2.5 in 0.20833 feet Heat Loss 20.66 Btu/Hr/Ft Heat Loss 19,418 Btu/Hr 19,418 Used above Velocity 2.07 Ft/Sec Friction Factor 0.0473 From Calc. Below Pipe Head Loss 14.07 Ft Darcy-Weisbach Pipe Head Loss 6.10 psi Calc. PAGE 3 OF 3 47 PM 95% ) ’ , ) ’ ’ ’ ’ ' ’ ’ Annual 770,900 13,055 Annual 365 13,055 770,900 Annual 1,000 700 1,300 QO oO 3,600 06/21/90 12 A 4 i / 4 i / 4 4 / / 9 QO 529 OTTO SOV OM NE DOHOMOOAND MMNMNNMT TITS TTT TMNT SS IDOOOOGOSGSSGG00000000000 OOOCCCCCCCSCCCCCCCCCCCCO Scammon Bay Dec Dec 31 1,712 Dec 131 92 170 serie 536 (BTU/HR’ $20 (BTU/HR, 1,712 517 iezu7ae BTU/HR 0 QO 427 WOT SFO NA ON DOHOM OMAN MMMOMNMT TITS TTT SST TONS TS IOOOOOGGG00000000000000, IDOOODOCOGGGGCGGGG000000 30 1,381 74 689 (BTU/HR: 138 689 (BTU/HR, 574 $17 (BTU/HR, $17 517 517 (BTU/HR; Nov Nov 106 $17 Nov 1,381 0 0 336 DOP SL ATGONM AAADANTONTOOON AMMAN OMNPFIOT COSTS TTS I TS OCCCCS0G0G00' oO IOODCOCD0000CO: 875 7 al iy 1 4 4 4 4 4 4 Oct Oct 31 1,086 59,500 61,200 67,000 73,900 76,200 Oct 83 58 108 Heat To Heat To 1,086 Q 0 191 DOG IA ATOANAAAATONTOOCON MMMMMMMTINT TOT TTT TSS IPOOSOSSSG9S0G0000000000, IOeCDCCCCCCCCCCCCCCCCCSCO OTOAr meee AM ODMDMOO ddiddetetedt kw Coolant Ambient 1,800 RPM Output QO 45 Sept 61,200 67,000 73,900 76,200 618 Sept 30 618 Sept 47 33 61 0 0 66 DONG IPR ATOANAAAATONTOOCON MOMMMMMMTINOT TOTTI TTT IIBDOCOSGGOGGGG000000, IDOOOCSSS0G000000000, Aug 425 Aug 31 425 Aug 33 23 42 oad above DPI LATONNAAANTONTOOCON MOMMMMMNMNTINT TOTS STITT TS DOOOVSOSSO0G0G000000000, IOOOSCSSSSOSCSGSSCCC000000 95 gpm load above 27 19 O00 i” 31 son 357 47,300 July July 47,300 59,500 ki ky Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Cummins LTA 10, Heat rate at kw-load above DOSS ATONE ADAADATONTOOCON MOMMMMNNMNTINOTTNOTTTTT TTS S OOOCOSGG0G00000000000 OoCCCCCCCCCCCCCC0000000 415 pe OSS June 30 415 44,000 June June Pa L 5 3 City Bldgs & Rec Center 44,000 DOP IPRA ATONNADADATONTOOCON AMMAN PF INT GOST STITT IIT lololelelololololololelololololololololelololoy ODOCCSCOCCCCOCCSCSCSCCCCCCCO OD000 RP RR>D> 90000 2.0.0.0.9. ago 0 0 UVVUUUU B5900 00000 Asstt pinay Bz333 BARR, pepo B5900 ovo00 poppy 0900 Sa pov TODO OVOOO Smee ws Flow Rate Heat rate at Heat rate at May 834 Heat Loss May 31 834 000 57,500 GENERATOR DATA 57,500 WOT TAT OVA OME DOHOMOHAND MMOMNNMVTTT TTT TT TIONS WOOOOSSSSSSSGG00000000 IOOODOOSSSSSGSCSSC000000 30 (IN) (Btu/Ft) (GAL/YR) 283 April July 1,283 Pipe Diae April , , April 1 Concep 72,400 65 Pp er month WI TO FOUN OMN-DOHOMBOHIND OM GI TP TTF PTT ITON TS IOOOGGGOGGGG00000000 OCCCCD0CC00000000000 31 1,475 March 1,475 Pipe Dist. (FT) March March WITT O TONNE OM NE DOHOMOOANO MOMMMNM TTT TTT TTT S OOCOOOSSOSSG0G000000000, ODCCCCCCCCCCCCCSCCCCCCCO 28 1,728 Feb 00 67,900 Feb Feb 1,728 WOTTATFOVNOMN-DOAOMODAND ACO! MMMNNMT TIT TTT S ° IDOOOGOSSSS990000000000, ° ” 50 Btu/hr.xF $0 Btu/hr.xF 0 Btu/hr. 1,167 Btu/hr.xF ipin 26,020 Btu/hr. Ein onstant y QO Btu/hr. 26,020 Btu/hr. dasood i = ro ot ™: 000 67,900 72,400 65,000 Jan ei o 5 Jan In IODOODSCCCCCCCCCCCCCC0000 1,742 Power Plant Production & Hourly Variation Gallons of Oil used JNM TWO DHNOAAMTNO-ONOdNMS A tet AAA 9 9 Q Q Q 0 Non- ing ng SeasonalSeasonal Use ? Y P. prehea’ S. 1: f£.: 1 1 1 ' ' 1 ! 1 1 ' ' 1 1 1 1 1 1 1 1 1 | 1 ! ! Kwh/Mth: 79, HDD/Mth: pi Plant heat l-yes, O=no iping ace ? DODODAGM TT TTNTAIMMMMMANOD MNMONTTT TTS TESST IDOOODGGOCGSGGG0G0000000, OCCCDCCCCCCCC000000000, , Compound boiler e. QO ° 3,600 er Building in use; ig 700 1,300 ine 1,000 Total c Variable losses si Scammon Ba Jun-90 Plant Subsur. Surface Radiator losses cons. Building City Office Clinic Headstart Water Plant School Rec Center WMWDAAM TTS TOTMMMMMMANOD MMMM G ITI TTT GTP TTT TTI OOOSCSCGS0000000: OCCO OCOCC0000000000' ooco Assumed Diurnal Heat Wint Demand Variation Power year factor Seasonal cons., gl: Non-seas. Year no. City Offic Clinic Headstart Water Plan School Rec Center Boiler gallons Effic. 0 0 QO 0 oO 0 GENERATION DATA: WEATHER DATA BUILDING DATA: Constant losses: Fuel use, Location SYSTEM LOSS DAT. WASTE HEAT UTILIZATION SIMULATION WORK SHEET Date 931 794 691 320 95 82 163 333 585 744 922 6,599 PAGE 1 OF 3 Total Use ~~«<938~~*~«*SCSS'C“‘«‘zSS*CSSCOS*~“‘«‘“C“!S*~«S*~i*‘w!SSC*« SSC SSSCA~S~SC«O2 SSC 5 Total Use MM Xeed ATINOH uNUTxXeEW € dO 2 3Dvd TINOH unuTKeW TINOH wNUT Kew Kk pueueq yeeH A peoetdstqd 3eeH ATinoy unuytxey @TQeTTeAY 3eeH suoTTe99ey 9» shpta Aato € BE6 TLO‘EL L29‘S8 TOE‘9B TE6 bbL ses eee €9T r4:] sé Ooze 169 b6L 226 009°9 qdeouop S s,OLd T9L‘8 §=9Lb‘6Z =LLS‘ED oss‘e Z09‘O0€ OTO‘ST TEs ‘Es bpe‘bs 8zb‘s9 6L0‘°LO9 1x 1 o tw tine i) RNR EERE RRR leo. 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FPOOOCUDANDD OO IOGANO IIS S00: DOOCGNGUNUUO UNE UNE SOO OF 252 RONANNWWWWWWWOWNNNNNNNWN DOTS SWOONNHOPNEIIBODOOF > BAP OODDHVUAHALVAGOONNNNHO RLNNNVNYWWOWWNWOWNNNNNNNWN DODDS DOONNNEH ONE IISBOODODOS NOCIISQ0F SOS SIIIWOOCoY LAGHS MYOM NOILWINWIS NOILWZITIIN LY3H ALSVM Aeg uoumess desuop - zequep oey 3 shpta Arto € ¢ WASTE HEAT UTILIZATION SIMULATION WORK SHEET 06/21/90 ** Main HE ** * Hot * * Cold * Temp. In 205 180 Temp Out 190 200 T Avg. 197.5 190 Flow 95.00 Calc. 15.42 Fluid Glycol50Glycol 50 Density 63.34 63.53 Spec Heat 0.863 0.859 Ther Cond 0.233 0.234 Viscosity 0.759 0.819 Temp. In Temp Out T Avg. Flow Length Size Heat Loss Heat Loss Velocity Friction Factor Pipe Head Loss Pipe Head Loss or b a or WoOrY © ~ 0 BRP oe Ow Re BANUDW+ NO wMwD NBWHOWO OM MOCO ** User HE ** * Hot * * Cold * 190 160 170 180 180 170 17.05 Gpm 15.46 13.43 Gpm Glycol 5 Water 63.78 62.40 lb/ft*3 0.854 1.004 Btu/lb F . 0.383 Btu/Hr Ft F 0.900 0.425 CP Ground deg F 30.0 deg F m # to: Rec Center in 0.16667 feet Btu/Hr/Ft Btu/Hr 13,010 Used above From Calc. Below Ft/Sec Darcy-Weisbach Ft psi Calc. Concept: 5 3 City Bldgs & Rec Center Scammon Bay (Max Heat Demand) /8,000 PAGE 3 OF 3 06/25/90 12:43 PM Scammon Bay Heat To Heat To 1,800 RPM Output 6 3 City Bldgs & Water GENERATOR DATA: Cummins LTA 10, Concep' Y Scammon Ba: Jun-90 WASTE HEAT UTILIZATION SIMULATION WORK SHEET Oo | v ® 9 i) A Date 95% kw Coolant Ambient load above oad above load above 95 gpm Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at ky k Heat rate at kw-load above: Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw-load above Heat rate at kw- Heat rate at kw-load above Flow Rate Heat rate at $0 Btu/hr.xF 1,167 Btu/hr.xF 50 Btu/hr.xF 0 Btu/hr. in 31,168 Btu/hr. Ein O Btu/hr. 31,168 Btu/hr. Plant piping: Subsurface Bi gine prehea: al constant: Surface piping: Plant nesting: Radiator losses: SYSTEM LOSS DATA: En To Variable losses: Constant losses Annual 770,900 13,055 Dec 1,712 Nov 1,381 Oct 67,000 73,900 76,200 1,086 Sept 61,200 618 Aug 59,500 425 July 47,300 357 June 415 834 May 57,500 44,000 1,283 April March 1,475 Feb 1,728 Jan 79,000 67,900 72,400 65,000 1,742 Kwh/Mth HDD/Mth GENERATION DATA: WEATHER DATA: as! Ook lemenr@ QOH LOA TAM AON LT MMMNMO ora ss ' a ol =| PAVIMMMMON Doahimnamrmosr DoN| eer eee EAs wanwow Dl adie a! “| ®@*-!1oc0coMnn Badal rvere ce AH LNNNNNS aa~t ' ! { ® +~1 NOM AWE | OOa AO! 8 ai | at ! \ ML OMMmIMN OoIeReene arti te one) elec a4 1 oCCCCO Out awit i Mw lLaaAtHoO st HO! al S| ! ! a1 10 1Oo00000 gel a OO! a zul - o! es oO! a at @1ooo0000 e1coow gonna we ale ios << gid aw & ot a ut aie cow ~ I4 paoo OO IH Hac Zanlie quoc HSOEIOUr nO QA Ol aan oO Ad | SEU OE Hoa DAaudo DIDGIAAOGIO Oa Ol OOmSsam Power Plant Production & Hourly Variation Building in use; l=yes, O=no Assumed Diurnal Heat Demand Variation: YL DOTTM TONAL OPN aADHCMaDANO do | MnNNNANVT TESTE TITS IONTTS Ql ooCCeCCCSCC0G00000000000 oeccccocccccCCCCCCCCCCCCO DOTIMTONAE OPN DOHOMaDHNO ONNMNONNVTITT TTT TET TONS TS Peletelotololelolotolololofolololotololosato) BETO TTR ATONE AIAATONTOOCON VI TONNMNNNNTTOT TOTS 9 1o090900900000000089000009060 SddddcdcddddddddddddddcddG TOMS SOK ATOARAIAATOATOOON TOMNMNMMNNTIMNTTOTTETTTSITS S80CSC0000000000000000000 eccocccccecCCCCCeCCCCCCCO DY PTA TOAD DANA TONTOOCON AMMO GIOTTO GGT TTT OOCCGO oCCCCO = = 999000000900000 3 TOM SSRN ATOARAIAATONTOOON TOMNNMNNNMNTIMNTTOsTSTTTISTS SE80000000000000000000000 IDOOCCDOCCCSCDCCCCCC0000 OP PODS SOL ATOANRAIAATONTOOON El eomMMoNMs OTTO TST BI ooesosssssese 0000000 3 OCCCC0CO DOG ILA ATGONMAADATONTOOON MAMMMMNNNTIMNTTOTTTSTTSTSS ISOOOOGGSOGG0G000000000 oeccoccccccCcCCCCCCCCCCCCO DOTITMTOANNr ONL ONDHAOMaAaANO MNNNNNMNsTTTeT TTT TIONS TS O00000000000000000000000 ecccocceC000000000000000 BI OOTIMTOANAL OPN OOAOMMBOAND J MMMNNNNVT TTT TET TST TONS 8 O000000000000: C0000000 ° IOOGCO000000: O0C00000 DLOOTTMTONNL Or NK DHAOMBHAND 0 MNNMNONNNTITITI TTT IONS &, | COOODOODGOGGGGGGGGG000000 WOOCOSSSSCOSCCCCCCCCCSCO € | DOTTMTONANr OPN aDnCMaaANO S| OnnMnonNssTeI TTT TTT TIONS TS 9 100000000969909099006005600060 SdddcccddddddcddcccccccG ANMTNOFDHNOTAMTNOEONnOdAMS AAA AA AAA ANN DOMMDDDAAM TTT TMMMMMMANOD ONNNNNTTITI TTS TIM SS0000G90000606000000000 ecoocccccCCCCC0000000000 Summer DODDOA AMT TTTNOTIMMMAMMANOD ANMNNNNTTIT TITTIES TTI O80000000000000000000000, ecocecCDCCGG0CRC00000000000, Winter ooOmM cons aa year factor Compound boiler eff Power Year no. Seasonal cons., Non-seas. Annual 365 13,055 770,900 31 1,712 Dec 73,900 76,200 30 Nov 1,381 31 Oct 1,086 Sept 30 618 Aug 31 425 31 357 47,300 59,500 61,200 67,000 July June 30 415 44,000 31 834 57,500 May 30 April 1,283 March 31 1,475 900 72,400 65,000 Feb 28 7128 , 1 31 79,000 67 Jan 1,742 11,499 PAGE 1 OF 3 553 590 697 957 1,121 1,305 584 817 Gallons 4 a: 1,067 A er month. h Ps 1,173 b 1,314 Gallons of Oil used 1,321 Y Clinic Headstart Water Plant School Rec Center Total Use TINOH umuT xen TINOH uNUT ew My Xeed Aran0# unuyTxeyW & peoetdstq 3eeH ATinoy unutxew STQeTTeAY 38H pueueq eH € dO 2 GoWd suoTTeoiem » shpta Aato € 856 L693 bes L18 = L90/T. ELT‘T BTE‘T -T2e‘T 806 ‘LOT 2S8‘0ZT 9bS‘TZT TET _$28°LSO‘T SvO‘OZT ZZT‘EOT EL0‘8B LZT‘b9 ELZ‘bS SzB‘0S Soe ‘T TOS ‘TT :3deou05 9 s,OLe 121 ‘86 TST ‘SL ZSL ‘ES 1 x 1 o '_o timer 10 RARER EEEEERRE tea. 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In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 24.06 Gpm (Max Heat Demand) /8,000 Calc. 21.77 21.82 18.96 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.34 63.53 63.78 62.40 lb/ft*3 Spec Heat 0.863 0.859 0.854 1.004 Btu/lb F Ther Cond 0.233 0.234 0.234 . Btu/Hr Ft F Viscosity 0.759 0.819 0.900 cP Pipe Temp. In 190 Temp Out 180 T Avg. 185 deg F 30.0 deg F Flow 24.06 gpm Length 850 # to: Water Plant Size 2.0 in 0.16667 feet Heat Loss 18.33 Btu/Hr/Ft Heat Loss 15,584 Btu/Hr 15,584 Used above Velocity 2.13 Ft/Sec Friction Factor 0.0504 From Calc. Below Pipe Head Loss 18.06 Ft Darcy-Weisbach Pipe Head Loss 7.82 psi Calc. PAGE 3 OF 3 WASTE HEAT UTILIZATION SIMULATION WORK SHEET —- Concept 7 3 City Bldgs & Elem Scammon Bay Location: Scammon Bay 06/21/90 Date: Jun-90 GENERATOR DATA: Cummins LTA 10, 1,800 RPM 12:44 PM Output Heat To Heat To SYSTEM LOSS DATA: Flow Rate 95 gpm kw Coolant Ambient 95% Constant losses: Heat rate at kw-load abov QO 3,875 689 {BTUGER) 4 KWH) Plant piping: QO Btu/hr. Heat rate at kw-load above 45 3,875 689 BIU/HRY / KWH) Subsurface pipin 38,836 Btu/hr. Heat rate at kw-load above 90 3,014 574 (BTU/HR) / (KWH) Engine preheatin 0 Btu/hr. Heat rate at kw-load above: 134 2,679 536 (BTU/HR) / (KWH) Total constant: 38,836 Btu/hr. Heat rate at kw-load above: 179 2,52 520 (BTU/HR) / (KWH) Heat rate at kw-load abov 187 2,446 517 (BTU/HR) / (KWH) Variable losses: Heat rate at kw-load abov 187 2,446 $17 (BTU/HR) / (KWH) Surface pipin 50 Btu/hr.xF Heat rate at kw-load above: 187 2,446 517 (BTU/HR) / (KWH) Plant heating: 1,167 Btu/hr.xF Heat rate at kw-load above 187 2,446 517 (BTU/HR) / (KWH) Radiator losses 50 Btu/hr.xF Heat rate at kw-load abov 187 2,446 $17 (BTU/HR) / (KWH) Heat rate at kw-load above: 187 7446 $17 (BTU/HR) / (KWH) Jan Feb March April May June July Aug Sept Oct Nov Dec GENERATION DATA: Kwh/Mth: 79,000 67,900 72,400 65,000 57,500 44,000 47,300 59,500 61,200 67,000 73,900 76,200 770,900 WEATHER DATA: HDD/Mt. 1,742 1,728 1,475 1,283 834 415 357 425 618 1,086 1,381 1,712 13,055 BUILDING DATA: Pipe Pipe Heat Pipe Fuel use, Non- In Boiler Dist. Dia. Loss Loss gallons SeasonalSeasonal Use ? Effic. (FT) (IN) (Btu/Ft) (GAL/YR) City Offic 1,000 QO 1 0.73 85 2.5 20.66 334 Clinic 700 0 Z 0.73 100 2.5 20.66 393 Headstart 1,300 QO i 0.73 95 2.5 20.66 374 Water Plan ° ° O 0.73 oO 2.5 20.66 2,243 School 15,001 ° . 0.73 660 2.5 20.66 2,597 Rec Center O 0 0 0.73 0 1.5 16.42 938 Building in use; l=yes, O=no Assumed Diurnal Heat Power Plant Production & Hourly Variation Demand Variation: Winter Summer Hour: Jan March April May June July Aug Sept Oct Nov Dec 0.039 1 0.038 0.038 0.038 0.044 0.044 0.044 0.044 0.044 0.044 0.038 0.038 0.038 2 0.036 0.036 0.036 0.039 0.039 0.039 0.039 0.039 0.039 0.036 0.036 0.038 3 0.034 0.034 0.034 0.034 0.035 0.035 0.035 0.035 0.035 0.035 0.034 0.034 0.038 0.038 4 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.034 0.038 0.038 5S 0.033 0.033 0.033 0.033 0.034 0.034 0.034 0.034 0.034 0.034 0.033 0.033 0.039 0.039 6 0.034 0.034 0.034 0.034 0.037 0.037 0.037 0.037 0.037 0.037 0.034 0.034 0.041 0.041 ii 0.038 0.038 0.038 0.038 0.037 0.037 0.037 0.037 0.037 0.037 0.038 0.038 0.043 0.043 8 0.042 0.042 0.042 0.042 0.039 0.039 0.039 +039 0.039 0.039 0.042 0.042 0.044 0.044 9 0.042 0.042 0.042 0.042 0.044 0.044 0.044 0.044 0.044 0.044 0.042 0.042 0.044 0.044 10 0.047 0.047 0.047 0.047 0.046 0.046 0.046 0.046 0.046 0.046 0.047 0.047 0.044 0.044 a 0.048 0.048 0.048 0.048 0.039 0.039 0.039 0.039 0.039 0.039 0.048 0.048 0.044 0.044 12 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.047 0.045 0.045 13 0.045 0.045 0.045 0.045 0.049 0.049 0.049 0.049 0.049 0.049 0.045 Q.045 0.044 0.044 14 0.047 0.047 0.047 0.047 0.051 0.051 0.051 0.051 0.051 0.051 0.047 047 0.043 0.043 iS 0.048 0.048 0.048 0.048 0.049 0.049 0.049 0.049 0.049 0.049 0.048 0.048 0.043 0.043 16 0.048 0.048 0.048 0.048 0.049 0.049 0.049 0.049 0.049 0.049 0.048 0.048 0.043 0.043 17 0.049 0.049 0.049 0.049 0.044 0.044 0.044 0.044 0.044 0.044 0.049 0.049 0.043 0.043 18 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.046 0.043 0.043 19 0.043 0.043 0.043 0.043 0.049 0.049 0.049 0.049 0.049 0.049 0.043 0.043 0.043 0.043 20 0.038 0.038 0.038 0.038 0.044 0.044 0.044 0.044 0.044 0.044 0.038 0.038 0.042 0.042 21 0.038 0.038 0.038 0.038 0.040 0.040 0.040 0.040 0.040 9.040 0.038 038 0.042 0.042 22 0.041 0.041 0.041 0.041 0.040 0.040 0.040 0.040 0.040 0.040 0.041 0.041 0.040 0.040 23 0.045 0.045 0.045 0.045 0.040 0.040 0.040 0.040 0.040 0.040 0.045 0.045 0.039 0.039 24 0.040 0.040 0.040 0.040 0.042 0.042 0.042 0.042 0.042 0.042 0.040 0.040 Power year factor 1 Year no. 0 Seasonal cons., gls.: 3,000 Non-seas. cons.,gls.: Q Compound boiler eff. 0.73 Jan Feb March April May June July Aug Sept Oct Nov Dec Annual Days: 31 28 31 30 31 30 31 31 30 31 30 31 365 HDI 1,742 1,728 1,475 1,283 834 415 357 425 618 1,086 1,381 1,712 13,055 kwh: 79,000 67,900 72,400 65,000 57,500 44,000 47,300 59,500 61,200 67,000 73,900 76,200 770,900 Gallons of Oil used per month, Gallons Building Jan Feb March April May June July Aug Sept Oct Nov Dec Annual City Office 133 132 113 98 64 32 27 33 47 83 106 131 1,000 Clinic 93 93 79 69 45 22 19 23 33 58 74 92 700 Headstart 173 172 147 128 83 41 36 42 61 108 138 170 1,300 Water Plant oO O oO 0 QO oO O ° 0 0 o ° 0 School 2,242 2,224 1,898 1,651 537 QO QO 273 795 1,398 1,777 2,204 14,999 Rec Center 0 0 0 0 0 0 oO oO 0 O ° ° 0 Total Use 2,642 2,621 2,237 1,946 728 95 82 371 937 1,648 2,095 2,597 17,999 PAGE 1 OF 3 My xeegq ATINoy unuTxeW € dO 2 Govd TINOH uMUTXeW TINOH uMUTXeW a A peoetdstd jeeH ATinoy umuypxew eTaeTTeAY 3eeH pueuied 3eeH suoTTeseta 3 sbpta Aaj € BoE ‘Z ZI8‘SLI 8b8‘86T ZLb‘ZBT 682‘2TZ p86 ‘T bbO’2 = BHO ‘T Lee TLE ze sé 82h TI6‘T 2912 6€2‘Z 6SS‘8TS‘T €86‘SOZ ZL6‘LBT PBS‘IST ELT‘98 OTS ‘9T tadeou0p z Ss ,ALa L66‘99 T9L‘8 LIT‘be OSS‘L RNRVRER PEER HEE BONPOODIDULWNPOWDIAUSWNE RRONVVVWWOWWNWWWNNNNNNNNN DOALSSBONNNEOPNE IIS OIBONS COBUUWACEPSOSPSATUOOoBHOWN RNNVNVNYWWWONRNYNYWNNNNNNNNNN BWUVWGUIABPOOOVBOGOOUUNWIDIIOW BEPOOHOBOOOUFPUWUOCOOPNEHOO RNONVNVYNNYNYNNNNNNNNNNNAN QAHISNIDOHOOISBOONN IN ARGONIOGITUE OH NGOW OBO sce 092 RNNNNYNNNNNNNNNNANNNNNANNN! 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IIIIoe STQeTTeAe 3eOH InoH uer znoy zed &q AON 220 ades bay Atng eunc Kew Tjady - yozew gag (s,L@ 000‘T) yajuow 2eq yTenuuy LAGHS MYOM NOILWIAWIS NOILWZITILIN LY3H ALSYM adeouop - weta ¥ shpta Ato € L Aeg uouwweoss WASTE HEAT UTILIZATION SIMULATION WORK SHEET - Concept: 7 3 City Bldgs & Elem Scammon Bay ** Main HE ** ** User HE ** 06/21/90 * Hot * * Cold * * Hot * * Cold * Temp. In 205 180 190 160 Temp Out 190 200 170 180 T Avg. 197.5 190 180 170 Flow 95.00 41.12 Gpm (Max Heat Demand) /8,000 Calc. 37.21 37.29 37.83 Gpm Fluid Glycol50Glycol 50 Glycol 5 Water Density 63.34 63.53 63.78 62.40 lb/ft*3 Spec Heat 0.863 0.859 0.854 1.004 Btu/lb F Ther Cond 0.233 0.234 0.234 0.383 Btu/Hr Ft F Viscosity 0.759 0.819 0.900 0.425 CP Pipe Ground Temp. In 190 Temp Out 180 T Avg. 185 deg F 30.0 deg F Flow 41.12 gen Length $40 to: School Size 2.5 in 0.20833 feet Heat Loss 20.66 Btu/Hr/Ft Heat Loss 19,418 Btu/Hr 19,418 Used above Velocity 2.19 Ft/Sec Friction Factor 0.0465 From Calc. Below Pipe Head Loss 19.55 Ft Darcy-Weisbach Pipe Head Loss 6.74 psi Calc. PAGE 3 OF 3 Scammon Bay Building Heating Summary One Std. Butler Bldg.; No insulation in floor. Fuel Oil: 96,000 BTU/Gal , Engine: Cummins LTA 10, 1800 RPM . Combustion Air: 490 CFM = 7.25 Airchanges/Hr Heat to Ambient: 1,500 Btu/Min Heat to Coolant: 5,650 Btu/Min Engine Rating: 175 Kw Generator Eff:: 93.4% Bldg Conduction Heat Loss: 456.1 BTU/hr/F Infil. Heat Loss: 98.1 BTU/hr/F/AC Heat to Bldg. Heat to Additional Kwh HDD Coolant Heat Ambient Heat Reqd Jan 79,000 1,742 1,707 508 453 55 Feb 67,900 1,728 1,467 504 389 LES Mar 712,400 1,475 1,564 430 415 LS Apr 65,000 1,283 1,404 374 373 2 ay 57,500 834 1,242 243 330 0 Jun 44,000 415 951 121 252 0 Jul 47,300 3 Of 1,022 104 27a 0 Aug 59,500 425 1,285 124 341 0) Se 61,200 618 1,322 180 351 0 Oc 67,000 1,086 1,447 Sal 384 0 Nov 73,900 1,381 1,597 403 424 0 Dec 76,200 1, 72 1,646 500 437 63 770,900 13,055 16,655 3,810 4,422 249 Kwh = Historical Records Input HDD = Historical Records Input . . Air Changes = (Building Volumn/Combustion Air Req.) + 2 Heat to ne Hea Heat Reqd. (Bldg Heat) at 65 di oolant = Heat rejected. to coolant by ae peo Heat = Heat Loss from building at eg. F. to Ambient = Heat rejected to ambient by engine (Heat to Ambient) Heat required to keep bldg at 65 deg. F With 6" Building Conduction Heat L Infiltration Heat Loss of Insulation added to the OSS: ldg. Heat BTU/hr/F Heat to Additional Ambient Heat Reqd 428 BWNHPRP PNWWEA NWAUCDBOCOCH oN CUNINPONUVINS B HDD Jan 1,742 Feb 1,728 Mar 1,475 Apr 1,283 ay 834 Jun 415 Jul 357 Aug 425 Se 618 Oc 1,086 Nov SOL Dec T7vi2 13,055 3 453 0 389 35 415 0 373 0 330 0 252 0 271 0 341 0 301 0 384 0 424 0) 437 0 4,422 So -1 BTU/hr/F/AC Pilot Station Building Heating Summary One Std. Butler Boe Ne insulation in floor. Fuel Oil: 96,000 BTU/Gal Engine: Cat 3306 DITA, 1800 RPM . Combustion Air: 625 CFM = 8.70 Airchanges/Hr Heat to Ambient: 2,633 Btu/Min Heat to Coolant: 13,281 Btu/Min Engine Rating: 211 Kw Genérator Eff.: 93.4% Bldg Conduction Heat Loss: 456.1 BTU/hr/F Infil. Heat Loss: 98.1 BTU/hr/F/AC Heat to Bldg. Heat to Additional Kwh HDD Coolant Heat Ambient Heat Reqd Jan 79,000 1,742 3,327 570 660 0 Feb 67,900 1,728 2,860 566 567 0 Mar 12,400 1,475 3,049 483 605 Q a 65,000 1,283 2,738 420 543 0 lay 57,500 834 2,422 213 480 0 Jun 44,000 415 1,853 136 367 Q Jul 47,300 357 1,992 1a 395 0) Aug 59,500 425 2,506 139 497 0 Se 61,200 618 2,578 202 Si. 0) Oc 67,000 1,086 2,822 356 559 0 Nov 73,900 1,381 3,113 452 617 0 Dec 76,200 1,712 3,209 560 636 0 770,900 13,055 32,470 4,213) 6,437 0 Kwh = Historical Records Input HDD = Historical Records Input . . Air Changes = (Building Volumn/Combustion Air Req,) + 2 Heat to Coolant = Heat rejected _to coolant by engine ae Heat = Heat Loss from building at 65 deg. F Heat to Ambient = Heat rejected to ambient by engine Heat Reqd. = (Bldg Heat) - (Heat to Ambient) = Heat required to keep bldg at 65 deg. F With 6" of Insulation added to the Floor Building Conduction Heat Loss: 270.9 BTU/hr/F Infiltration Heat Loss 98.1 BTU/hr/F/AC Bldg. Heat to Additional HDD Heat Ambient Heat Reqd Jan 1,742 489 660 Q Feb 1,728 486 DO, 0 Mar 1,475 414 605 Q eee 1,283 361 543 0 ay 834 234 480 0 Jun 415 116 367 0 Jul 3571. 100 395 Q Aug 425 119 497 0 se 618 174 Bi 0 Oc 1,086 305 559) 0 Nov 1,381 388 617 0 Dec az 481 636 0 Pr Ww . Oo on on Ww s ron) Oo) oO Oy ny Ww ~ oO Pilot Station Building Heating Summary One Std. Butler Bldg.; No insulation in floor Fuel Oil: 96,000 BTU/Gal Engine: cmc $v-71, 1200 RPM . Combustion Air: 0 Crm” = 2.00 Airchanges/Hr Heat to Ambient: 0 Btu/Min Heat to Coolant: 5,730 Btu/Min Engine Rating: 160 Kw Generator Eff.: 93.4% Bldg Conduction Heat Loss: 456.1 BTU/hr/F Infil. Heat Loss: 98.1 BTU/hr/F/AC Heat to Bldg. Heat to Additional Kwh HDD Coolant Heat Ambient Heat Reqd Jan 719,000 1,742 1,893 284 0 284 Feb 67,900 1,728 1,627 282 0 282 Mar 72,400 Pale 17135 240 0 240 Apr 65,000 1,283 1,558 209 0 209 ay 57,500 834 1,378 136 0 36 Jun 44,000 415 1,054 68 0 68 Jul 47,300 Sor 1,134 58 Q 58 Aug 59,500 425 1,426 69 0 69 Se 61,200 618 1,467 101 0 101 Oc 67,000 1,086 1,606 id 0 177 Nov 73,900 1,381 1,771 225 0 225 Dec 76,200 1,72, 1,826 219 0 279 770,900 13,055 18,474 2,129 0 2,129 Kwh = Historical Records Input HDD = Historical Records Input Air Changes = (Building Volumn/Combustion Air Req,) + 2 Heat to Coolant = Heat rejected to coolant by oo pean Heat = Heat Loss from building at 65 deg. F. Heat to Ambient = Heat rejected to ambient by engine Heat Reqd. = (Bldg Heat) = (Heat to Ambient) = Heat required to keep bldg at 65 deg. F With 6" of Insulation added to the Fl Building Conduction Heat Loss: “3 ° 0 .9 BTU/hr/E Infiltration Heat Loss -1 BTU/hr/F/AC Bldg. Heat to Additional HDD Heat Ambient Heat Reqd Jan 1,742 203 0 203 Feb 1,728 202 0 202 Mar 1,475 GL 0 172 Aor 17233) 150 0 150 ay 834 97 0 97 Jun 415 48 0 48 Jul 357 42 0 42 Aug 425 50 0 50 Se 618 72 Q 72 Oc 1,086 27, 0 127 Nov LAsoL 161 0 161 Dec AT Le 200 0 200 RP WwW s oO a uo PR s ol N uo oO b . uo Ny ul POLARCONSULT ALASKA,, INC. * 1503 W. 33 rd Suite 310 * HEAT LOSS CALCULATIONS Anchorage, Alaska 99503: * 907) 258-2420 * Soe Dee sa 5 veneer ne MRE EEE Prepared for: Headstart Notes: 1 floor 2x6 arene Address: Scammon Bay preschool, 3 Booms, oo e Legal: dbl pane glass, Bat Date (M/D/Y) : 06/07/90 NN SS eee Building Perimeter: 3000 (ft.) Type of Foundation: Piles Insul. R-Value: 19 Area Below Grad 0 (sq ft) Area Above Grade: 1500 KKAKKKKKK WALLS ***KKKKKKK Front Area (sq ft): 376 Rear Area (sq ft): 376 Front R-Value: 19 Rear R-Value: 19 Left Area (sq ft): 198 Right Area (sq ft) 207 Left R-Value: _ 19 Right R-Value: _19— FRA KRHKKK WINDOWS KRRKEKEKE Front Area: (sq ft) 24 Rear Area: (sq ft) 24 ea Area: tae” £t) Ri ae Area: es EC) = ype: KKK KKK KKK Number of Doors: 3 Area: (sq ft) 63 Metal?: NO R-Value: 4 Garage Doors?: NO Area: (sq ft) 0 Numbér?: 0 nn R-Value: O° RK RKKKEK— SROOF ORK KKKKKEK Hot or Cold?: HOT R-Value: 32 Area (SF): 1500 Btu/Hr- F Btu/Hr-100 iT Foundation 18.9 1894.7 Walls 60.9 6089.5 Windows 30.0 3000.0 Doors L558 157550 Roof 46.9 4687.5 TOTALS: 23265) 23246.7 KK KKK KKK KK KKK KKK KKK KKK KKK KK KKK KKK KKK KKK KKK KKK KKK KKK KKKKKKKKKKKKEK KKK KKK KKK INFILTRATION ****kkkKx* Total Floor Area: 1500 Infiltration Loss: Room Height: 8 Air Change/four: 1 216.0 (Btu/Hr.-d. F) KKKKKKKK SLHOUL S . cERRAKENT REA AKRERERRERS EROS ER ADELE READ HERE TOTAL HEAT LOSS FROM BUILDING: At 1 degree Temperature Difference 448.5 Btu/Hr- F Minimum Furnace Size 56058.39 Btu/Hr Output 32" 055 Degree Days per Year 6,000 Btu/Gallon of Fuel = 1,464 Gallons of Fuel Pee KKK KKK KKK KKK KKK KKK KKK KKK KKK KKK KKKKKKKKKKKKKKKKK # KKKK POLARCONSULT ALASKA, INC, * 1503 W. 33 rd Suite 310 * HEAT LOSS CALCULATIONS Anchorage: Alaska 99503 * (907) 258-2420 * KKKKKKKKKK KKK KKK KKK KKKKKKKKKK Prepared for: City Hall Notes: 1 floor 2x6 frame Address: Scammon Bay office, 6 rooms, on piles Legal: dbl pane glass, 1/2 bath. Date (M/D/Y): 06/07/90 ee a eee Building Perimeter: 2128 (ft...) Type of Foundation: Piles Insul. R-Value: 19 Area Below Grade: ______O _ (sq ft) Area Above Grade: 1064 RRR AKHKEK WALLS RKKKKKEK Front Area (sq ft): 292 Rear Area (sq ft): 280 Front R-Value: 19 Rear R-Value: 19) Left Area (sq ft): 188 Right Area (sq ft) 188 Left R-Value: oS Right R-Value: _ 19_ KI AKAKAK WINDOWS RRRRRKERK Front Area: (sq ft) 12 Rear Area: (sq ft) 24 Left Area: (sq ft) 36 Right Area: (sq ft) 36 Type: Double-Pane _____R-Value: 2 III DOORS FXKKKKKKK Number of Doors: i Area: (sq ft) 24, Metal?: NO R-Value: 4 Garage Doors?: NO Area: (sq ft) 0 Bae ee eee R-Value? _ 7 0 II ROO ORKKKKKKKK Hot or Cold?: HOT R-Value: 32 Area (SF): 99 1064 CONDUCTION HEAT LOSS SUMMARY Btu/Hr- F Btu/Hr-100 tT Foundation 56.0 5600.0 Walls 49.9 4989.5 Windows 54.0 5400.0 Doors 5.3 5251.0 Roof 33.3 3325.0 TOTALS 198.4 19839.5 KKKKKKKKKKKKKKKKKKKKKKK KK KK KKKKKKK KKK KKK KKK KKK KKK KKK KKK KK KKK KK KK KKK KK KK KK INFILTRATION **xxkkKKK Total Floor Area: Room Height: Air Change /four: KKKKKKKK Infiltration Loss: 153.2 (Btu/Hr.-d. F) KKK KKK KKK KKK KKK KKK KKK KKK KKK KKK KKK KKK KK KKK KKK KKK KKK KKK KK 1064 8 TOTAL HEAT LOSS FROM BUILDING: At 1 degree Temperature Difference Minimum Furnace Size 13,055 Degree Days per Year ,000 Btu/Gallon of Fuel KEK KKKKKKKKKKKKKKKKKKKKKKKKKKKK 351.6 Btu/Hr- F 43951.34 Btu/Hr Output = 1,148 Gallons of Fuel KkKKK KKK KKK KKK KKK KKK KKK KKKKKKKKKKK Fao ALASKA INC. * 1503 rd Suite 310 * HEAT LOSS CALCULATIONS Anchor Alaska 99503 * 907) BL 2420 * Sele k eee es kbetekkdeneRae Prepared for: Clinic Notes: 1 floor a meat ieee Scammon Bay Clinic, 5 rooms, Pit es Legal l pane glass, 1 Ba Da @(M/D/Y) : 06/07/90 TS Tn one eee Building Perimeter: 1280 (ft.) Type of Foundation: Piles Insul. R-Value: Area Below Grade: Area Above Grade: KKKEKKKKKK WALLS KKKKKKKKK Front Area (sq ft): 2ae Rear Area (sq ft): 232 Front R-Value: 19 Rear R-Value: 19 Left Area (sq ft) 3 127 Right Area (sq ft) 127 Left R-Value: __19 Hee Right R-Value: 19 IK WINDOWS REKKKKKKR Front Area: (sq ft) 24 Rear Area: (sq ft) 24 Left Area: tea" ft) 12 = ht Area: idae ft) 12 TYPC? oe eeneeeeee Double-Pane ______R-¥ alue: 2 SE aan nnn ee ene nnn Onan Number of Doors: 2 Area: (sq ft) 42 Metal?: NO R-Value: 4 Garage Doors?: NO Area: (sq ft) 0 Number?: ___o ee R-Value: 0 IIIS ROOR RRKKKKKKEK Hot or Cold?: HOT R-Value: 32 Area (SF): 640 CONDUCTION HEAT LOSS SUMMARY Btu/Hr- F Btu/Hr-100 i, Foundation 3952 3368.4 Walls 37.8 3178.9 Windows 36.0 3600.0 Doors 1025 1050.0 Roof 20.0 2000.0 TOTALS: 138.0 13797.4 KKKKKK KKK KKK KKK KK KKK KKK KKK KKK KKK KK KKK KKK KKK KKK KKK KKK KKK KKKKKKKKK KOK KK KK INFILTRATION ***kKKKKX Total Floor Area: 640 Infiltration Loss: Room Height: 8 Air Change/Hour; i 92.2 (Btu/Hr.-d. F) KKKKKKKK SOUL te ER RENEE MARE KRDE KERREA PERS KOE ADEE KKKKKKKKK TOTAL HEAT LOSS FROM BUILDING: At 1 degree Temperature Difference 230.1 Btu/Hr- F Minimum Furnace Size 28766. 41 Btu/Hr Output 13,055 Degree Days per Year ,000 Btu/Gallon of Fuel = 751 Gallons of Fuel KKKK KK KKK KKK KKK KKK ERK KK RK KK KKK RK KK KKK KK KK RK KK ROK KK KK KR RK KKK polarconsult Scammon Bay District Heating APPENDIX B Field Trip Notes polarconsult Scammon Bay Field Trip Notes February 5, 1989 Leslie Moore, Michael Dahl, PCA Met with the following people in Scammon Bay and discussed the project and their concerns. Tony Ulak 558-5529 Xavier Simon Previous AVEC Operator 558-5529 Dan Tunutmoak AVEC 558-5529 Carolyn Kaganak City Clerk 558-5529 Byron Ulak Accounts Clerk 558-5529 Wesley Henry Water/Sewer Operator 558-5529 Harley Sundown City Manager 558-5529 Lower Yukon School District (Mt. Village, Scammon Bay, Pilot Sta.) James Luke Maint. Dir. 591-2411 Eunice Beans Secretary 591-2411 1. Weather: Coastal weather influence. Lots of drifting on N, NW sides of buildings. Population: 330+. Increase about 10 people per year. During the summer most people commercial fish, although many workers are available and like to work in town. The state is upgrading the airport this summer which could account for a majority of the available equipment and workers. Labor: Wages $20.00 / hr operator, $12.00 / hr labor. (+ workers comp. + benefits + etc.). Utilities: Water: Year-round underground distribution and truck haul to some sections. Water treatment plant is located up the hill right next to the school. Use about 16,000 gal/yr of oil for water heating and pumping. Paid $1.75/gal last year. Provides heat to the building and the water distribution system. Water comes from the creek above town and runs directly into the treatment plant. Building is founded on gravel pad. 3 boilers in plant, American Standard model 1 (SN IB-J1, , ) 115 mbh. Building furnace, Pot boiler. Circulation loops, 42°F & 45°F, pumped on return. Appendix B Page 1 polarconsult Scammon Bay Field Trip Notes February 5, 1989 Sewer: Underground collection, Above ground gravity pipe to sewage lagoon. Elec: Overhead distribution. TV: Cable installed, but out of service. Fuel: Barged in. Underground common fuel line from the Kun River to AVEC, water plant, armory, and the school complex. A separate underground line runs to the City tanks. City pays about $10,000 per year at $1.75/gallon. Stove oil sells for $1.95/gallon. 3. Right of Way 4. Equipment (2) IH 51800 dump Trucks - operational. (1) JD 350 Loader w/ backhoe - operational. Case Dozer - operational. 5. Community Hall/City Hall: 40' x 40' building with single stove, Laser 55, 22 mbh. Cannot keep the building warm. They use about 70 gallons per month in the winter. Space for the building heating system and user equipment would need to be made in one of the rooms. The city will install hot water radiant heat systems in the city office and the headstart buildings if waste heat made available to them. They are very positive on the use of waste heat. 6. Clinic: Single boiler, Burnham model V-13A (SN 22060771) 76.5 mbh. Electric hot water heater, Aero model CF32T, 32 gal., 112 gph @ 100°F. Room in mechanical room for user equipment. 7. Headstart: Single stove, Toyo model S-72. 30 gallon electric water heater not operational. Building 48' x 28', use about 70 gallons per month in the winter. Room in unused entry way for user equipment. 8. Recreation Center: 104' x 60' x 20' high, basket ball court and locker rooms. 2x6 frame, R19 in walls and ceiling. (2) Boilers, Burnham model V-17A (SN 22022220 & 22020542). Water Heater; Phase III, Triagle Tube, Thomas Ave., Williamstown, NJ, 08094, 45 gal, type 45 (SN 0035553). Appendix B Page 2 polarconsult Scammon Bay Field Trip Notes 10. February 5, 1989 Use building from 7pm to 11pm every night. Heated all day, use about 400 gallons per month in winter. No heat in May, Jun, Jul, & Aug. Fill 900 gallon fuel tank every 2 days in the winter. Room in 9.7' x 13.6' mechanical room for user equipment, come up through floor. School, , Principal. Total enrollment of 101. High school building, shop, Elementary school building, and teacher housing located up the hill above town. High school has boilers and a domestic hot water heater, Shop has a hot air furnace. Elementary school has central boilers and domestic hot water heat in a utility building to heat elem, and 2 teachers houses. They burn about 35,000 gallons of #2. Fuel records were obtained from James Luke in Mt. Village, Lower Yukon School District. 30,219 gallons avg. over last two years. Elem School (K-6), (2) Weil Mclain model A-B-782 & O-782 boilers in utility building (538.6 mbh output.) Shop building, Oil Furnace. AVEC 3 units with 2 remote rads. Unit #3 out of service, skid mounted radiator. 100 kw average load. Unit #1 running, 240V, 600A, 60 Hz, 130 kw. Radiator #2 running @ 26% speed, 174°F return temperature. Station service panel 120/240V Iph. 4 open spaces. 2 intakes w/ motor controls. Building not very well insulated. No heat in building, - 20°F outside, 58°F inside. Diamond plate under unit #1. 1) Cummins LTA 10 - 100 rpm 2) Cat 3306 D1-TA 3) GMC 8V-71 Appendix B Page 3 polarconsult Scammon Bay District Heating APPENDIX C Cost Estimate HMS 9022 CONSTRUCTION COST ESTIMATE WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA COST CONSULTANT ENGINEER HMS Inc. Polarconsult Alaska 4103 Minnesota Drive 1503 West 33rd Street, Suite 310 Anchorage, Alaska 99503 Anchorage, Alaska 99503 (907) 561-1653 February 18, 1991 (907) 562-0420 FAX WASTE HEAT RECOVERY SYSTEM PAGE 1 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 NOTES REGARDING THE PREPARATION OF THIS COST ESTIMATE This study has been prepared from eight (8) 8 1/2"x11" sketches and outline specifications linking three facilities in the village, as detailed by Polarconsult. Unit prices and costs indicated in this estimate are based on current knowledge. The possible effects of current hostilities in the Middle East have not been considered in the preparation of this estimate. This estimate is a statement of probable construction cost only, and is priced using A.S. Title 36 prevailing labor rates and current materials, freight and equipment prices, and to reflect a competitive bid in Spring 1992. Removal of hazardous material has not been considered in this cost estimate. CONCEPT #2 - Water Treatment Plant and Elementary School CONCEPT #3 - Water Treatment Plant, Elementary School and City Office, Headstart, Clinic CONCEPT #7 - City Office, Headstrart, Clinic and Elementary School WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY SUMMARY CONCEPT #2 CONCEPT #3 CONCEPT #7 CONSTRUCTION COST ESTIMATE 01 - General Conditions, Overhead and Profit 130,777 157,896 139,063 02 - Sitework 110,034 115,299 83,757 05 - Metals 1,403 1,403 1,403 06 - Wood and Plastics 1,200 1,200 1,200 13 - Special Construction 4,450 4,450 4,450 15 - Mechanical 51,710 77,298 58,812 16 - Electrical 8,565 11,628 9,415 SUBTOTAL 308,139 369,174 298,100 Estimate contingency for elements of project not determined at this early level of design 10.00% 30,814 36,917 29,810 Escalation at .50% per month to Spring 1992 7.50% 25,421 30,457 24,593 TOTAL CONSTRUCTION COST: 364,374 436,548 352,503 PROJECT COST Design 10.00% 36,437 43,655 35,250 SIA (Supervision, Inspection and Administration) 20.00% 72,875 87,310 70,501 Project Contingency 10.00% 36,437 43,655 35,250 TOTAL PROJECT COST: orn rr eel erent 510,124 611,168 493,505 PAGE 2 2/18/91 PAGE 3 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 GE 4 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 01 - GENERAL CONDITIONS QUANTITY UNIT RATE ESTIMATED COST Mobilization 1 LOT 8,500.00 8,500 Freight 52,800 LBS 0.50 26,400 Supervision, equipment, utilities, clean site, tools and protection 8 WKS 3,500.00 28,000 Per diem 230 DAYS 110.00 25,300 Travel costs, including time in travel 6 RT 1,400.00 8,400 SUBTOTAL 96,600 Bond and insurance 2.25 % 6,164 Profit 10.00 % 28,013 TOTAL ESTIMATED COST: 130,777 WASTE HEAT RECOVERY SYSTEM FASE = SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 QUANTITY UNIT UNIT RATE ESTIMATED COST Piped Utilities Excavate trench for arctic pipe, including backfilling and spread and level surplus 1,000 LF 12.50 12,500 2 1/2" diameter Schedule 40 pipe with insulation and arctic pipe protection 1,740 LF 48.50 84,390 1 1/2" ditto 260 LF 37.50 9,750 2 1/2" bend 12 EA 180.50 2,166 1 1/2" bend 6 EA i135 50 813 2 1/2" tee 2 EA 207.50 415 TOTAL ESTIMATED COST: 110,034 WASTE HEAT RECOVERY SYSTEM bane SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 05 - METALS QUANTITY UNIT UNIT RATE ESTIMATED COST Structural steel support welded to existing skid 1,220 LBS 1.15 1,403 TOTAL ESTIMATED COST: 1,403 WASTE HEAT RECOVERY SYSTEM PAGE 7 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 QUANTITY UNIT UNIT RATE ESTIMATED COST 06 - WOODS AND PLASTICS Access steps, including handrail and base 1 Lor 1,200.00 1,200 TOTAL ESTIMATED COST: 1,200 WASTE HEAT RECOVERY SYSTEM EAGE-S SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 13 - SPECIAL CONSTRUCTION QUANTITY UNIT UNIT RATE ESTIMATED COST Pre-engineered 8’0"x8’0" building module with floor, exterior wall structure and roofing complete ak EA 2,800.00 2,800 Hole through exterior wall for heating pipes 4 EA 110.00 440 Exterior door 1 EA 710.00 =——71.0 Louver 1 EA 500.00 500 TOTAL ESTIMATED COST: 4,450 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY CONCEPT #2 15 - MECHANICAL Exchanger and Connections Connection to existing piping to cooling system of generators Form hole through existing wall for heating pipes 2 1/2" diameter black steel welded piping Fittings Butterfly valves Insulation to pipe, 2 1/2" diameter Booster pump Heat exchanger, 300,000 BTUH Unit heater, 60 MBH including thermostat 1" diameter piping including fittings Gate valves Insulation QUANTITY 80 10 80 40 40 UNIT EA EA LF EA EA LF EA EA LF LF UNIT RATE 72.50 195.00 21.52 40.00 300.00 6.60 1,450.00 3,750.00 330.00 9.70 77.00 4.30 PAGE 9 2/18/91 ESTIMATED COST 145 390 1,722 400 1,200 528 1,450 3,750 330 388 154 172 WASTE HEAT RECOVERY SYSTEM ree SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-up Form hole through existing wall for heating pipes 4 EA 195.00 780 2 1/2" diameter black steel piping including fittings 20 LF 21552 430 1 1/2" ditto 20 LF 14.75 295 1 1/2" copper piping including fittings 40 LF 14.95 598 Gate valves 21 EA 260.00 5,460 Check valves 4 EA 260.00 1,040 Strainer 4 EA 58.00 232 Balancing valve 6 EA 53.00 318 Temperature control valve 2 EA 225.00 450 Insulation 80 LF 5.83 466 Heat exchanger, 350,000 BTUH 1 EA 4,305.00 4,305 Ditto, 150,000 BTUH iH 5 3,375.00 3,375 WASTE HEAT RECOVERY SYSTEM =—-> SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 15 - MECHANICAL QUANTITY UNIT RATE ESTIMATED COST Hook-up (Continued) Expansion tank, 40 gallon capacity 2 EA 1,475.00 2,950 Air separator 2 EA 495.00 990 Pumps, circulation Grundfoss 200, 2" diameter 4 EA 680.00 2,720 Connection to existing piping system 8 EA 72.50 580 Make-up glycol system connection, including tank 2 EA 610.00 1,220 Glycol 440 GAL 8.80 3,872 Test and balance system 80 HRS 75.00 6,000 Controls and Instrumentation Generator building and new module au LOT 2,000.00 2,000 Hook-up inter ties 2 LoTs 1,500.00 3,000 TOTAL ESTIMATED COST: 51,710 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY CONCEPT #2 PAGE 12 2/18/91 16 - ELECTRICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-Up Breaker in existing power panel 4 EA 175.00 700 Connection to motor 8 EA 115.00 920 Disconnect switch 7 EA 330.00 2,310 3/4" EMT conduit 180 LF 3.20 576 #8 copper 720 LF 0.85 612 New Module Main feeder and conduit 40 LF 8.50 340 Breaker in existing distribution panel 1 EA 277.00 277 Panel al EA 800.00 800 Exterior light fixture 1 EA 330.00 330 Light fixtures 6 EA 190.00 1,140 Switch 1 EA 55.00 55 Duplex outlets 4 EA 68.00 272 WASTE HEAT RECOVERY SYSTEM PAGE 13 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #2 16 - ELECTRICAL QUANTITY UNIT UNIT RATE ESTIMATED COST New Module (Continued) 1/2" conduit 50 LF 3.00 150 #12 copper 150 LF 0.55 83 TOTAL ESTIMATED COST: 8,565 PAGE 14 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 WASTE HEAT RECOVERY SYSTEM PAGE 15 SCAMMON BAY, ALASKA CONSTRUCTION COST S'TUDY 2/18/91 CONCEPT #3 01 - GENERAL CONDITIONS QUANTITY UNIT UNIT RATE ESTIMATED COST Mobilization it LOT 8,500.00 8,500 Freight 68,500 LBS 0.50 34,250 Supervision, equipment, utilities, clean site, tools and protection 10 WKS 3,500.00 35,000 Per diem 280 DAYS 110.00 30,800 Travel costs, including time in travel 6 RT 1,400.00 8,400 SUBTOTAL 116,950 Bond and insurance 2.25 % 7,385 Profit 10.00 % 33; 562 TOTAL ESTIMATED COST: 157,896 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY CONCEPT #3 02 - SITE WORK QUANTITY UNIT UNIT RATE PAGE 16 2/18/91 ESTIMATED COST Piped Utilities Excavate trench for arctic pipe, including backfilling and spread and level surplus 1,055 2 1/2" diameter Schedule 40 pipe with insulation and arctic pipe protection 1,740 1 1/2" ditto 260 1" ditto 110 2 1/2" bend 12 1 1/2" bend 6 1" bend 4 2 1/2" tee 8 TOTAL ESTIMATED COST: LF LF LF LF EA EA 12.50 48.25 37.50 30.15 180.50 135.50 112.50 207.50 13,188 83,955 9,750 3) 317 2,166 813 450 1,660 115,299 WASTE HEAT RECOVERY SYSTEM = SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 05 - METALS QUANTITY UNIT UNIT RATE ESTIMATED COST Structural steel support welded to existing skid 1,220 LBS 1.15 1,403 TOTAL ESTIMATED COST: 1,403 WASTE HEAT RECOVERY SYSTEM ee SCAMMON BAY, ALASKA CONSTRUCTION COST’ S'TUDY 2/18/91 CONCEPT #3 06 - WOODS AND PLASTICS QUANTITY UNIT UNIT RATE ESTIMATED COST Access steps, including handrail and base ny LoT 1,200.00 1,200 TOTAL ESTIMATED COST: 1,200 WASTE HEAT RECOVERY SYSTEM PAGE 19 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 13 - SPECIAL CONSTRUCTION QUANTITY UNIT UNIT RATE ESTIMATED COST Pre-engineered 8’0"x8’0" building module with floor, exterior wall structure and roofing complete 1 EA 2,800.00 2,800 Hole through exterior wall for heating pipes 4 EA 110.00 440 Exterior door 1 EA 710.00 710 Louver 1 EA 500.00 500 TOTAL ESTIMATED COST: 4,450 WASTE HEAT RECOVERY SYSTEM PAGE 20 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Exchanger and Connections Connection to existing piping to cooling system of generators 2 EA 72.50 145 Form hole through existing wall for heating pipes 2 EA 195.00 - 390 2 1/2" diameter black steel welded piping 80 LF 21.52 ee Fittings 10 EA 46.35 464 Butterfly valves 4 EA 325.00 1,300 Insulation to pipe 2 1/2" diameter 80 LF 6.60 528 Booster pump al EA 1,450.00 1,450 Heat exchanger, 300,000 BTUH z EA 3,750.00 3,750 Unit heater, 60 MBH including thermostat 1 EA 330.00 330 1" diameter piping including fittings 40 LF 9.70 388 Gate valves 2 EA 77.00 154 Insulation 40 LF 4.30 172 PAGE 21 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-up Form hole through existing wall for heating pipes 10 EA 195.00 1,950 2" diameter black steel piping including fittings 20 LF 1797 359 1 1/2" ditto 20 LF 14.75 295 1" ditto 100 LF 9.65 965 1 1/2" copper pipe 40 LF 14.95 598 I" “aitto 40 LF 10.07 403 3/4" ditto 20 LF 7.95 159 Gate valves 37 EA 260.00 9,620 Check valves rd, EA 260.00 1,820 Strainer 7 EA 58.00 406 Balancing valve 8 EA 53.00 424 Temperature control valve 5 EA 225.00 2,225 WASTE HEAT RECOVERY SYSTEM ee SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-up (Continued) Insulation 240 LF 5.83 L339 Heat exchanger, 350,000 BTUH a EA 4,305.00 4,305 Ditto, 150,000 BTUH 1 EA 3,375.00 3,375 Ditto, 60,000 BTUH 1 EA 2,280.00 2,280 Ditto, 50,000 BTUH 1 EA 2,115.00 2,115 Expansion tank, 40 gallon capacity 2 EA 1,475.00 2,950 Air separator 2 EA 495.00 990 Pumps, circulation Grundfoss 200, 2" dia 7 EA 680.00 4,760 Connection to existing piping system 10 EA 72.50 725 Make-up glycol system connection, including tank 2 EA 610.00 1,220 Glycol 740 GAL 8.80 6,512 Test and balance system 110 HRS 75.00 8,250 WASTE HEAT RECOVERY SYSTEM RASH 26 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Controls and Instrumentation Generator building and new module 1 LOT 2,000.00 2,000 Hook-up inter ties 5 LOTS 1,500.00 ‘7,500 TOTAL ESTIMATED COST: 77,298 WASTE HEAT RECOVERY SYSTEM PAGE 24 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 16 - ELECTRICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-Up Breaker in existing power panel 7 EA 175.00 1,225 Connection to motor 14 EA 115.00 1,610 Disconnect switch 10 EA 330.00 3,300 3/4" EMT conduit 310 LF 3.20 992 #8 copper 1,240 LF 0.85 1,054 New Module Main feeder and conduit 40 LF 8.50 340 Breaker in existing distribution panel a EA 277.00 277 Panel 1 EA 800.00 800 Exterior light fixture 1 EA 330.00 330 Light fixtures 6 EA 190.00 1,140 Switch 4 EA 55.00 55 Duplex outlets 4 EA 68.00 _ 272 WASTE HEAT RECOVERY SYSTEM PAGE 25 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #3 16 - ELECTRICAL QUANTITY UNIT UNIT RATE ESTIMATED COST New Module (Continued) 1/2" conduit 50 LF 3.00 150 #12 copper 150 LF 0.55 83 TOTAL ESTIMATED COST: 11,628 PAGE 26 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 WASTE HEAT RECOVERY SYSTEM reas £7 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 01 - GENERAL CONDITIONS QUANTITY UNIT RATE ESTIMATED COST Mobilization 1 LOT 8,500.00 8,500 Freight 48,000 LBS 0.50 24,000 Supervision, equipment, utilities, clean . site, tools and protection 12 WKS 3,500.00 42,000 Per diem 210 DAYS 110.00 23,100 Travel costs, including time in travel 6 RT 1,400.00 8,400 SUBTOTAL 106,000 Bond and insurance 2.25 % 5,963 Profit 10.00 % 27,400 TOTAL ESTIMATED COST: 139,063 WASTE HEAT RECOVERY SYSTEM PAGE 28 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 02 - SITE WORK QUANTITY UNIT UNIT RATE ESTIMATED COST Piped Utilities Excavate trench for arctic pipe, including backfilling and spread and level surplus 925 LF 12.50 117563) 2 1/2" diameter Schedule 40 pipe with insulation and arctic pipe protection 1,340 LF 48.25 64,655 1" ditto 110 LF 30.15) Syaar 2 1/2" bend 14 EA 180.50 2,527 1" bend 4 EA 112.50 450 2 1/2" tee 6 EA 207.50 1,245 TOTAL ESTIMATED COST: 83,757 WASTE HEAT RECOVERY SYSTEM PAGE 29 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 05 - METALS QUANTITY UNIT UNIT RATE ESTIMATED COST Structural steel support welded to existing skid 1,220 LBS 1.15 1,403 TOTAL ESTIMATED COST: 1,403 WASTE HEAT RECOVERY SYSTEM PAGE 30 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 06 - WOODS AND PLASTICS QUANTITY UNIT UNIT RATE ESTIMATED COST Access steps, including handrail and base az LOT 1,200.00 1,200 TOTAL ESTIMATED COST: 1,200 WASTE HEAT RECOVERY SYSTEM PAGE 31 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 13 - SPECIAL CONSTRUCTION QUANTITY UNIT UNIT RATE ESTIMATED COST Pre-engineered 8/0"x8’0" building module with floor, exterior wall structure and roofing complete 1 EA 2,800.00 2,800 Hole through exterior wall for heating pipes 4 EA 110.00 440 Exterior door 1 EA 710.00 710 Louver a; EA 500.00 500 TOTAL ESTIMATED COST: 4,450 WASTE HEAT RECOVERY SYSTEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY CONCEPT #7 PAGE 32 2/18/91 15 - MECHANICAL Exchanger and Connections Connection to existing piping to cooling system of generators Form hole through existing wall for heating pipes 3" diameter black steel welded piping Fittings Butterfly valves Insulation to pipe, 3" diameter Booster pump Heat exchanger, 300,000 BTUH Unit heater, 60 MBH including thermostat 1" diameter piping including fittings Gate valves Insulation QUANTITY 80 10 80 40 40 UNIT EA 5 UNIT RATE 72.50 195.00 26.22 46.35 325.00 7.10 1,450.00 3,750.00 330.00 9.70 77.00 4.30 ESTIMATED COST 145 390 2,098 464 1,300 568 1,450 3,750 330 388 154 172 WASTE HEAT RECOVERY SYSTEM PAGE 33 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-up Form hole through existing wall for heating pipes 8 EA 195.00 1,560 2" diameter black steel piping including fittings 20 LF 17.97 359 1 1/2" copper piping including fittings 20 LF 14.95 299 1" ditto 40 LF 10.07 403 3/4" ditto 20 LF 7.95 159 Gate valves 27 EA 260.00 7,020 Check valves 5 EA 260.00 1,300 Strainer 5 EA 58.00 290 Balancing valve 5 EA 53.00 265 Temperature control valve 4 EA 225.00 900 Insulation 200 LF 5.83 1,166 Heat exchanger, 350,000 BTUH aL EA 4,305.00 4,305 WASTE HEAT RECOVERY SYSTEM PAGE 34 SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 15 - MECHANICAL QUANTITY UNIT UNIT RATE ESTIMATED COST Hook-up (Continued) Heat exchanger, 60,000 BTUH a) EA 2,280.00 2,280 Ditto, 50,000 BIUH az EA 2,115.00 2715 Expansion tank, 40 gallon capacity Z EA 1,475.00 1,475 Air separator a EA 495.00 495 Pumps, circulation Grundfoss 200, 2" diameter 5) EA 680.00 3,400 Connection to existing piping system 8 EA 72.50 580 Make-up glycol system connection, including tank 1 EA 610.00 610 Glycol 440 GAL 8.80 3,872 Test and balance system 90 HRS 75.00 6,750 Controls and Instrumentation Generator building and new module 1 LoT 2,000.00 2,000 Hook-up inter ties 4 Lots 1,500.00 6,000 TOTAL ESTIMATED COST: 58,812 WASTE HEAT RECOVERY SYS'I'EM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY CONCEPT #7 16 - ELECTRICAL Hook-Up Breaker in existing power panel Connection to motor Disconnect switch 3/4" EMT conduit #8 Copper New Module Main feeder and conduit Breaker in existing distribution panel Panel Exterior light fixture Light fixtures Switch Duplex outlets PAGE 35 2/18/91 QUANTITY wa 230 920 40 UNIT EA EA LF LF LF EA EA EA UNIT RATE 175.00 115.00 330.00 3.20 0.85 8.50 277.00 800.00 330.00 190.00 55.00 68.00 ESTIMATED COST 875 1,265 2,310 736 782 340 Zi 800 330 1,140 55 272 PAGE 36 WASTE HEAT RECOVERY SYS'TEM SCAMMON BAY, ALASKA CONSTRUCTION COST STUDY 2/18/91 CONCEPT #7 16 - ELECTRICAL QUANTITY UNIT UNIT RATE ESTIMATED COST New Module (Continued) 1/2" conduit 50 LF 3.00 150 #12 copper 150 LF 0.55 83 TOTAL ESTIMATED COST: 9,415