Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Polarconsult AK Waste Heat Invoices 1992
polarconsult alaska, inc. LETTER OF TRANSMITTAL 1503 West 33rd Avenue e Suite 310 ANCHORAGE, ALASKA 99503 (907) 258-2420 FAX (907) 258-2419 ep ee Sa [DATE [JOB NO’ lee a | se = | to AE ects) ee Mr. Vaenge— WE ARE SENDING YOU Yarached {] Under separate cover via___________the following items: () Shop drawings O) Prints {) Plans 1 Samples OC) Specifications 1 Copy of letter (Change order f Kepers i ae COPIES | __ DATE NO = - ae ae DESCRIPTION S mee | | G Finae Repoer Pr Winage Dispeicc— thea. Lovee. Gegapines | lo M W BEW Geapuics 1 u wu o Agno " \ Diew w/ AcAD Dwos + Weep” Reser fre. THESE ARE TRANSMITTED as checked below: CO For approval {] Approved as submitted C] Resubmit copies for approval Fro your use OC Approved as noted ( Submit copies for distribution hos requested (1 Returned for corrections C Return corrected prints C) For review and comment (1) 2 (1 FOR BIDS DUE GS) PRINTS RETURNED AFTER LOAN TO US REMARKS copy to thee ap he MM polarconsult alaska, inc. LETTER OF TRANSMITTAL 1503 West 33rd Avenue e Suite 310 ANCHORAGE, ALASKA 99503 (907) 258-2420 FAX (907) 258-2419 — cy at oe DATE JOB NO. ] 4 le fay ie cadence ATTENTION to Au ENewqy AutHeerry | Bean ney | % Viuaces Disneer dear RECEIVE D AVS 3 tnd Yoilowing items: WE ARE SENDING YOU Attached _[] Under separate cover via. the wing items: : ALASKA ENERG Y AUTWaR C) Shop drawings O Prints Plans OC Samples oY ‘Spetifications —] Copy of letter (J Change order A Lepeers os i pie copies | __—oaTE NO. eee . DESCRIPTION aa rs | | - — | Prey Starion Finae Kepoep Rig. ie | a re " w/ coroe GRAPHICS 2 - = a‘ . w/ BeO Gearaies \ WHS Gest es , BoonD \ 1.2 Dou vf Acad POGsS. \ INVO\Ice ) FINE THESE ARE TRANSMITTED as checked below: C For approval {) Approved as submitted {) Resubmit copies for approval Yi For your use (1 Approved as noted ( Submit copies for distribution Z As requested C) Returned for corrections C) Return_____corrected prints (1) For review and comment (1) i (J FOR BIDS DUE___ 9 Ss LD) PRINTS RETURNED AFTER LOAN TO US REMARKS COPY TO x tc ae ee SIGNED: MEST DY LQ_ eee If enclosures are not as noted, kindly notify us at once. polarconsulit alaska, inc. 1503 West 33rd Avenue e Suite 310 ANCHORAGE, ALASKA 99503 (907) 258-2420 FAX (907) 258-2419 ALASKA ENERGY AUTHORITY 70/ EAST TudeR yo. Grey TO WE ARE SENDING YOU Attached [1] Under separate cover via iL ETTER OF TRANSMITTAL [DATE pee rast < ier og ve F- i TUNONAK DisTRIeT HEAT REPRT f CONCEPT LEVEL DES/GH JOB NO. R the following items: () Shop drawings O Prints {) Plans (1 Samples C) Specifications Copy of letter ( Change order oO a a en a COPIES PP DATE : if NO fs DESCRIPTION | Cooler ceric @ | o-/+4 o o Gyan Block fF whh / we Ut Ort ys 44 THESE ARE TRANSMITTED as checked below: 0 For approval C) Approved as submitted C) Resubmit copies for approval For your use ( Approved as noted 1 Submit copies for distribution CL] As requested C) Returned for corrections ( Return_____corrected prints (1 For review andcomment () () FOR BIDS DUE 19. REMARKS copy TO aie bt Slee i {J PRINTS RETURNED AFTER LOAN TO US polarconsult alaska, inc. LETTER OF TRANSMITTAL 1503 West 33rd Avenue e Suite 310 ANCHORAGE, ALASKA 99503 (907) 258-2420 FAX (907) 258-2419 a alta et +f rene 2 gn ro Ay. Euezay Autroeny eM. apiece 8 eae 2 Viraces RECEIVED 28 1991 [en ENERGY AUTHORITY J WE ARE SENDING YOU /Bosached C] Under separate cover via the following items: CL Shop drawings C) Prints C] Plans 1 Samples OC) Specifications 1 Copy of letter (1 Change order O = | COPIES DATE NO. DESCRIPTION Seanryon BAY Disreict Heat Srvoy , O@ia. w/ Corea qreaphics “ © 9 | \ w/ B&W Geapmes \ INVoIce- = ScAMMen) BAY | : BoondD Ws Cost Ear, THESE ARE TRANSMITTED as checked below: OO For approval C) Approved as submitted C) Resubmit copies for approval Jitor your use OC Approved as noted OC Submit copies for distribution Jias requested C Returned for corrections C Return______corrected prints (1) For review and comment [1] . 7% C1) FOR BIDS DUE 19 S—C«L). PRINTS RETURNED AFTER LOAN TO US REMARKS COPY TO _ Pree vst ES aetiee! 3g tie oe Wt yoven, UN AESCSR) i sake polarconsult aleska, inc. LETTER OF TRANSMITTAL 1503 West 33rd Avenue e Suite 310 ANCHORAGE, ALASKA 99503 (907) 258-2420 FAX (907) 258-2419 Pee JOB NO. 2/21 |40 = ATTENTION ro Aw eneegy Aorreaity ela) Grey RECEly ED Ot 2+ 199 ons sh WE ARE SENDING YOU Attached () Under separate COROASRA ENERGY Aron following items: 1ORITY, () Shop drawings OC Prints C) Plans OC Samples OC Specifications — Copy of letter C1 Change order JD kegoer— a2 [copies | oare NO DESCRIPTION A ——S e Neate Diewict Heat Repoer covee Geaphics 9 u u u KBE Geaphics \ ORIGINAL , vATBCEND \ Dis 12 4B, vl Repoer a deed DNAS. \ Financ Invoice THESE ARE TRANSMITTED as checked below: CO For approval C Approved as submitted LC) Resubmit copies for approval Yi For your use OO Approved as noted () Submit copies for distribution Joos requested CJ Returned for corrections CO Return corrected prints C1 For review and comment [] a ea f] FORBIDS DUE. Ee I'D (J PRINTS RETURNED AFTER LOAN TO US REMARKS COPY TO Pue— jo ios. Sh ES es 2 ee RINE: Map AQ a if enclosures are not as noted, kindly notify us at once. State of Alaska Walter J Hicke!. Governor Alaska Energy Authority A Public Corporation February 6, 1992 Mr. Earle V. Ausman, P.E. Polarconsult Alaska, Inc. 1503 West 33rd Avenue, Suite 310 Anchorage, Alaska 99503 Subject: Contract #2800098 Work Order #8 (Noatak Waste Heat) Work Order #14 (Tununak Waste Heat) Work Order #15 (Nunapitchuk Waste Heat) Work Order #13 (Scammon Bay Waste Heat) “Work Order #12 (Pilot Station Waste Heat) Dear Mr. Ausman: We have received your final invoices dated February 3, 1992, in the amounts of $1,886.58, $1,582.33, $1,404.58, $1,650.03, and $1,550.93 respectively on the work orders referenced above. This is to notify you that these work orders are being closed out. Any remaining funds that had been set aside for these work orders will be disencumbered and made available for future work under the contract. Sincerely, j {hu oll lin St David Denig- -Chakroff / Director of Rural Programs’ cc: Steve Stassel, Alaska Energy Authority+ Gary Smith, Alaska Energy Authority Don Whelan, Alaska Energy Authority Marlys Hagen, Alaska Energy Authority PO. Box AM Juneau, Alaska 99811 (907) 465-3575 “0 PO. Box 190869 701 East Tudor Road ~=Anchorage, Alaska 99519-0869 (907) 561-7877 » ® polarconsult alaska, inc. ENGINEERS ¢ SURVEYORS ¢ ENERGY CONSULTANTS Alaska Energy Authority February 5, 1992 P.O. Box 19086 Anchorage, Ak. 99519-0869 Attn.: Brian Gray Rural Systems Engineer Re: Waste Heat Reports for nine Villages. Dear Brian: We are transmitting this letter as requested in response to your technical questions on the nine waste heat recovery reports prepare for AEA. The questions are from the second review of these reports by Steven Stassel of AEA. Copies of the review comments are included with this letter. There were a number of basic assumptions made during the progress of these reports. As the projects are to be constructed in AVEC power plants, the modifications and connections within the plant were to meet with their requirements. We feel that there are a number of ways to decrease the cost of these projects without major impact on the reliability of the power plants by revising the piping connection schematics. Electric demand at the plants varies both hourly and seasonally. As the use of engines is entirely up to the local operator, it is difficult to determine which single engine, or which combination of engines, will be running at any one time. AVEC is also in the process of replacing aging or failed engines, and increasing the size of some plants due to demand as part of their normal maintenance. New engines are mostly Cummins engines that are more efficient. These engines produce less waste heat than the older engines they are replacing. These two factors have a major impact on the amount of waste heat available. Our analysis assumed that the most efficient engine at each plant would run continuously. Station heat requirements were based on having the engine requiring the greatest amount of supplementary waste heat to keep the buildings warm, running continuously as shown in the building summary sheets in Appendix A. 1503 WEST 33RD AVENUE e SUITE 310 e ANCHORAGE, ALASKA 99503 PHONE (907) 258-2420 * TELEFAX (907) 258-2419 polarconsult alaska, inc. e @ February 5, 1992 District Heat Report Engine manufacturer's specification data is listed in Table III-A. Waste heat utilization simulation work sheets used more detailed heat rejection information at various loads, supplied by the engine manufacturer's. Heat loss figures input into the station heat loss section of the waste heat utilization simulation work sheets were for the engine requiring the most waste heat to keep all the AVEC buildings at 65°F. Heat content of 96,000 BTU for a gallon of heating oil was used for this report. This value was arrived at by using a gross heating value of 132,000 BTU for arctic grade diesel times an estimated efficiency of 73% for boilers. Since the report conclusions are entirely in gallons of oil saved, these assumptions are critical. The BTU content of oil varies depending on the source, blending and grades used, so results can vary plus or minus 5% due to variations in heat content. Further, oil fired equipment efficiencies vary greatly which introduces another plus or minus 5% possible variation in the results. All reports assumed that three trips would be made to each village by a skilled crew each year, to perform routine maintenance. Follows are answers to review comments for each report, as well as copies of the review comments. Sincerely Yours Earle V. Ausman wh9;WH9L09GB.DOC polarconsult alaska, inc. °e e@ February 5, 1992 District Heat Report Noatak Waste Heat Recovery 3. & 23. All reports assumed that three trips would be made to each village by a 11. 12. 15. 16. skilled crew each year, to perform routine maintenance. Unit #4, a John Deere 6619A was scheduled to be replaced with a Cummins KTA 1150 after our scheduled field investigation. Field notes indicate the JD 6619A in position 4, while the report is based on the Cummins KTA 1150 already being installed in position 4. Cummins KTA1150's in positions 4 & 5 are 1200 rpm, not 1800 rpm as indicated in Table III-A. Fuel consumption for the school buildings is as shown in Table IV.A. All district heating installations in forced air systems in this report, have the heating coil installed in the return air duct. 18.A Supply and return lines to unit #5 are shown reversed. During design of this 18.B 18.C. project these lines will need to be reversed. Engine coolant flows through a thermostaticaly controlled valve that diverts coolant to either the heat exchanger, radiators, or directly back to the engine as required. When the system is constructed, the valve would need to be adjusted to keep a certain amount of coolant flowing through the radiators to keep down the possibility of cold shocking. The primary heat exchanger was sized to be capable of transmitting the maximum amount of heat required in the distribution system. In this case it is less than the maximum amount of heat available. If plant growth warrants, additional plates can be added to increase the size of the heat exchanger. 18.D. During design phase of this project, piping layout will need to be reviewed, and 19. possibly revised. The distribution piping in Figure V-1 is 3" diameter as shown. The supply piping in Figures V-5 through 7 are 2" as shown. The piping necks down from 3" to 2" at the building. Larger diameter distribution piping is used to keep the pipe head losses down, which in turn keeps the pump sizes and annual operation cost down. 25.A Waste heat worksheets and building heating summaries included with this letter, 25.B The module size is 20'x12'x10.5', not 30'x12'x12'. This works out to 55,800 (ft°/hr) / 2,520 ft’, or 24 air changes per hour as indicated in the report, and used in the calculations. ddd 07 95% BTU/HR 365 17,239 Dec 770,500 314 AM Annual 770,500 17,239 Annual ‘KWH KWH KWH KWH 10/21/90 Noatax 4 4 yj i 4 4 4 4 / } ) } ddd PIMNTONNE ONE MOAOMOOANO v1 ow 8 QaannansevesssTTTTINI TTS oO Dec Nov Dec 31 2,076 OOOOGGGGG000G000000000 eC0CDD000000000000000000 BIU/HR 2,076 (BTU/HR) / (KWH (BTU/HR) / (KWH ddd WOTTON TONNE ON DOHOMMBDANO MMMNNMNTTITITS TTT TIONS 873 873 727 679 659 5 1 1 1 1 1 Nov 1,683 Oct Nov 30 1,683 79,600 84,100 79,600 84,100 ddd DOF SH ATPONLAADATONTOOON MOMMMONNMNTIMTTOTT TTT TS = = esccoeeessesess9o900000000 So. 4 4 6 4 3 3 3 3 3 3 3 Oct Sept Oct 31 1,296 71,200 SocdcddccGcecdGGcccdcG Heat To Heat To 71,200 1,296 ddd DD PTH APONAIAANTONTOOON AMMONIA F FOC TOFS TTS S TTS ~ = 989900909000060000606000000 3 ki 4 9 3 7 8 0 0 QO 0 0 Sept’ 825 Aug Sept 30 825 50,900 eoDCCCCCCCCCOCCCCCCCOCO Output 50,900 doood TOM TERM ATONRAAAATONTOOON TOMNNNNMTINTTOsTs TTS ToT OCSDCDG0SCCCCCCR0000000 ATION, 1,800 RPM Aug 47,300 616 July Aug 31 616 47,300 Ooo, DO PT ATPONAAGAATONTOOON OMMMNMNNMTITIMTIOT TTT TITS s z 9ee9ec99999999080599000060 o ELEM 31 608 608 44,500 Vee 4 4 3 3 3 3 3 3 3 3 3 July 41,500 June July ISdd000000000000000dG00 HS, John Deere, 44,500 ddd OTTORATOARAdHATOATOOON ONMMONTINTTOTTTTT TSS TS 29999000006600000000000 Iddddddcddddddddddddddd JH, 801 30 801 41,500 May June June 0: arts WIP, dtd Dl sO TERM ATONRAGAATONTOOON 8 | saIQannnsyswMstITITTITY 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: Flow Ra Heat 1,208 April May 31 1,208 56,400 GENERATOR DATA Gallons ddd WOTTON TONNE OLN ODHOMMBOHAND MMMMNNNTTTTT TTT TT ION TS A410 1M 4 190000000000) 000000000 B16 30 1,764 OC0CCCCC0O 1,764 April 6 5 i 3,634 March 1,500 April Concept 1 er month ddd 2 Sco aN Feb 0: 0 QO Qo QO Qo oO Qo QO QO 0 Qo Qo Qo QO 0 0 0 ° 0 0 March 31 7202 69,100 60,400 Pi March 8 9 3 4,506 2 2 New Duvedac Power Plant Production & Hourly Variation ddd ATO mom 2 OoPTIN TONAL ONNRDDALCMaAMAIND 0 MNNMNMNONVT TITS TSS TIONS & 1 0000000000906000009000000 ' 1 1 1 lz ' 1 ! i° ' ' ! ! ' 1 1 { ' ' ! ! ' ' ! ' 1 1 1 1 1 I ! ' i | Sodddcddcdddcdccdddddd665 1 1 1 ! ! ! I 1 ! ! ! ' ' ' 1 \ 1 1 ! ! ! ! ! ! i t 28 Feb Jan Feb 2,108 72,200 Feb 3,300 72,200 2,108 $0 Btu/hr.xF 4,319 Q Btu/hr. 1,596 Btu/hr.xF ipin 41,956 Btu/hr. Q Btu/hr. 956 Btu/hr. mame oe o00O EL OOTIMGONNLOLNrODHOMMB@HNO HOrMOM SI NMNNMNNNV TET STS TIONS TS aor el Rolelolololelololololol=} 200000000 wns ceeeereee cee eee eee ar) 31 2,052 100 Btu/hr.xF 93,300 Jan Jan Jan 319 7 1 9 207 2,052 0.73 , ’ , Gallons of Oil used 1 1 4 41 Boiler Kwh/Mth HDD/Mth: ! ' ! ! 1 { 1 ! ! ' ! ! ! ! ' 1 ' ' ' ' ' ' ' ' ' I { \ 1 1 1 ! 1 ' ' 1 ' 1 1 1 1 ' 1 ! ! 1 ' 1 ! 1 ' ' ' { ! 1 ' ' ' ' ' ! ! ' ' 1 1 | ' 1 1 | ' ! ' ' ' ! | ! 1 1 1 ! 1 ! 1 ' ' 1 1 ! ' in Coco sonal Effic. P. eat ing: ng: SSeS: Non- pi Ss 1s. onstant Plant heat Radiator lo: iping ace prehi chool h F gls.: alc 0 tor TFSI FIOMMNNMNMNNNNT TITS BSooccCC00000000000000, ine ILIZATION SIMULATION WORK SHEET 1,627 6,000 choo 14,000 gh § Elem School Bldg. # 5 Washeteria Jr Hi Fons 2g Hi Compound boiler eff.: Total Use Noatak Oct-90 Seasonals: Building Washeteria Subsur. Eng. To Surface Plant Variable losses mOMOThOdTORrOTdOnvOMors s Dr OTANAOADOE OOK ROACANTORD rh Elem Schoo 10,000 0900090900900000000600000 SSdCccc0000C00 SYSTEM LOSS DATA: Constant losses: GENERATION DATA: WEATHER DATA: BUILDING DATA: Seasonal cons., Non-seas. Location: Fuel use, gallons Building ip Date: Jr Hi High Power ye Year no. PAGE 1 OF 3 Noata WIP, JH, HS, ELEM - Concept 1 WASTE HEAT UTILIZATION SIMULATION WORK SHEET ddd dino MADAM AMM--AMAVONMMTHOMMOOW MONA Ge TST TST IMM SM LUN Ln OLIN NLA Ln nnn ininin unin ininininininin ODOR DVOGCHNAAINAMORAANOS ANAM MM TPES TTT IMMAIMOM rAdNMK MAL dONwMaNnDNooOw AE MANN AT NOBOONTONAAAG MAMMMMMMMAMMMMMMMMMANNS 2 IDOMMKANDAOOTOrOOMWODWOWM BI COMAANNNOONOMNONNHONNOLEE AD 8 | PAAAANANMMAMM-MMMMMMANNAN DMAAMMANOMMAwNANONNMNNO MOOCONAMR AMAIA AROS gO NAVAN NANA MMMAAMANAAN Aug 275 AMOUR AOOdR ded HWOnWODON INADDOONNR AR AORANRANANAS NAAANNANN NANO NANA July 256 MOMOBOOWOMMOMrOnKnMrroannno Pal letetatatebul thal cintalminbultimboteteteliel NAA AA ANNAN NNN OMT TAIIOVOMAMMOrR NORA COU SPS COOL. COLA OVI MI MADD ANANAANAMMAMMAMMMMMMANNM WOO OMT TPADAOAADANTTNNNON INO ANN OCODOCON DOHA TOM ANANAMMMAMMAMAMMAMMMAMAM AADDANHN- Hr OMMMTeananroy MOODNOMAAMTMAMTTNVONNAOAK AM ANMMAAMMMMMMAMMMMMMAME b CHOOMOOAADDODMHHOrDHNOCODO D | ANOONOATTHOANEHOOCKOMAASRM ANMMMMMMAMIMMMSSTIEMMMMAMOM ADNAN ATOON AOR ends sorn DANAE HAAN ADANNMOME ROAD OMAN OOS PGP POG PF IIOM SMM Jan 374 ANMTNOFOROAAMNTNOrOARnOKAMS AAA ANNAN Heat available per hour by month (1,000 BTU’s) 147 195,742 213,201 253,764 263,701 277,767 2,789,464 2,420 2,543 1,822 1,980 2,128 © 2,318 2,759 2,867 3,020 -" 30,327 $72 222,588 233,919 167,547 182 2,659 (1,000 BTU’s) 2,645 Feb 3,166 291,229 243,287 244, Heat demand by hour by month Gallons BTU’s 2 213-2 464 Month Oct Sept D 3 «< > a 3 45 March Jan DONOR MOOT TOOINE HONODO QAM FANGOANANANVNOAN TON HON DPPC SFSEMNMMMOM SET TINT MAADNMVANMOVOM TTrOWMAUMINAMO. DON TAVAOONAANOOIAMTNOOA MM MMAMMAMAMANANMMMMMMMMMe DAHON TR AOMOAHOMOHAE TIONMDO MF POVAIAOOCONHDGOOHHNMT TNO NAAN AANA NNN AT OAOAOMOONDOMOAOHO THO ADH OOM TF FANN OOR OAT AAA A A dette WN TMANAHOCOOCCON ANAM TNO ANNAN NANNNANNN DONNA AMOAONNOAOM AAO OIMNANAODWOMA ER OBOHOdANM TO MAM MMANNANNAAANAMMMMMM AMER AMM NAAN MMR AnsMNO AAD OF MANA AOOMANM TOM AOD OO GEG TPT TTT TT TININN DWNAAMBHDOMAHNOAFAOMAAIN®O AAD NMAVOONAAHOONMNM ADAMO COMMIT TT TMM OOO 660 MOM AMAA AAMAMPOMnd I~ N NODONMFMAAAIAMNTNODONINRO WW OONININININNNINININININDOOOR 701 Rs ghd OrnoONr Orden ems ADMMMAOO™OONN OO DOAMIN A ONNNNMH esse TTT TONNNINNO IAM PTNOKDAOGAMTINOCEOAOGAMS FAA AAA AANA 16,772 124,191 162,427 248,595 319,396 391,294 3,046,229 18,447 386,903 397,148 414,346 334,215 232,496 Total Demand Heat Delivered FAA ANAM SMM SS TOMY MANDAL AM-KAMANONMM THOM MONNMNNMOM SETS TTT TIOMM LOUD LN OUR I LN 1 st FOLLOW JQDDRDUOGOAAAAAHOGOMANIND: ANAMAM MMMM MM MMSE SFMMM OE PC VAANAMOOM eeROWMANNOOO: I~ AAAMANACONAADNHAOOIAMAAAG MAMMMMAMANAIANMMAMMOMMAINN DONNIE HOMODAROMOAE TIO WUMANNAHOCONAGOOKd AAMT TN NNNNNN ANNAN AANA AT OAD AOMOD™-WOMOAOTO Te AD OO NINA gr PLAIN OO DOV a a ee ee eee WU TMANNAAOOCOCOOH ANAM TNL! DO ONT MMMMMMMM TNO Oa INAANNANNNANNNNANNNNNNNN OOTP A ADOADINNO AON AE DO SFT DODO EDODHOAINAAD: ANANAUNNNNNANANN NOOO WOOO OU TPAD AOADAM FTN IIo INO HNN OCODOCON NOH HF O! IANA AAMMMAMMAMMMAMAMMMMN! AD NOHDAMINN NOM INN TOMATO: MOODONAAMTMAIM TTMNNOMMON MAM AMA MAAMMMMMAMMMAMMMAM AOOMOOANADDOODNO™DHAOCOW ANOON OAT THON HAOCHON AS fa | EUIEEIEE OES MASAI IE ' ' hour by month (1,000 BTU’s) 6 Il wdagaragqoneneneneeds sor DANAE HAAN AATNAMOMN ROO OOM SHES TST NOP OM ONOANM TNO OAOINM AA AAA Heat delivered by un - wn ey - 268 308 198 ~ INAANAN ANNA NIAAA Oo im 374 335 315 330 397 s iN 16,772 124,191 161,478 232,698 258,770 277767 2,304,550 18,447 291,229 243,287 244,572 222,588 212,751 BTU’s Goncept 1 WIP, » HS, ELEM Gallons 2,420 2,313 201 182 1,350 1,756 2,530 2,813 2,659 Maximum Hourly Heat Displaced Y Y Maximum Hourl 2,645 3,166 PAGE 2 OF 3 Heat Demand Heat Available Maximum Hourly Peak KW Maximum Hourl 365 95% 7,239 0,500 7500 239 , Annual 770 17 Annual 1 77 YL DOTTMTONNL Or Mr DDHOMHwDH4NO Oo | MNNNNNNVT TTT TE TIONS A 1900000000000000000000000 9 Dec 4,100 2,076 31 2,076 4,100 eceeCCCDDCCCCCCCCCOCCCCO BTU/HR 8. BTU/HR BTU/HR Db Moser TONNr ORME aDHAOMaAaNA4NO oO lmannonnnsss889 TTT TIONS Zloooccc000000000000000000 30 873 7 ~ 873 t 727 ie 679 / 659 i 5 4 1 / 1 4 1 / 1 / 1 / Nov 600 1,683 Nov 1,683 ecocccCRCCCCCCCCCCCCCCCO PIL TOMS TEN ATOARAGAATONTOOON VI SOMNMNMNNMNTT NTT TTS TES 08 19900000000000000000000000 31 841 4 6 4 3 3 3 3 3 3 3 Oct Oct 1,296 felolololololololololololololololololololalololo} Heat To Heat To 71,200 79,600 71,200 79, 1,296 TOMTOM ATONE AdAATONTOOON TOMMNMNNTIMNTTOTTITITSTTS O80000000000000000000000, kw Coolant Ambient 3 3 8 ‘0 0 0 0. 0. Sept 825 Sept 30 825 folololololololololololololololololololololololo} Output 50,900 Ol vO TEER ATOAKAGAATONTOOON ZI yoMMoOMoNNsTNT TOV seTSe TSS @1OO0C0C00000: 1QOOCSCG0000000 1,800 RPM Aug 616 Aug 31 616 47,300 50,900 [oYololololololo! folotolololololololalolololo} | | | cad above: POM SIO OATONNAAADTONTOOON TFOMNNNNNMNTINTTMITITITSITSS O0CCCG0GGG00000000000000, 95 gpm load above: 31 608 44,500 July 608 July oocecCCCC0RCCCC00000000000 44,500 47,300 POMTTONATONrAdAATONTOOON TOMNMNNNNTINTTOsTTTTesTSS S00C00000000000000000000 801 June OOOCCD900000000 41,500 | ' 1 ! ' { ! 1 1 1 1 1 1 ! ! ! ! 1 1 1 ! 1 ! ! ' ' ! ' 1 1 ! ! ! ! ' ! ! ! ! 1 1 1 1 1 ' ' i DS) pA SEK RATAN AdAATONTOOON J sQanannIsT IIT IoITTITTIITTSY ! 10 ' ! 1 1 1 ! ' ! ! ! ! { ! ! ' ' 1 I ! \ ! ! ! 1 1 1 | ! ! ! 1 1 | ! ' ! 1 1 ! 1 1 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 kw-load above ki Heat rate at ki Heat rate at kw-load above: Flow Rate May OOCCCOOGD0GG00000000000 COCCCDDCDCCOCCCCC0000000, GENERATOR DATA: John Deere, 56,400 1,208 DOTIMNTONANE Or Nr DOHOMMaHNO MONNNNNNsTTTS SITET TIONS SS ° SOSSS0000000000 CCCCCCC0000000 1,764 April Concept 1 OOTTMTONNE OPN DDAwOM@B@OHIND MOMNNNNNNsTTe TTS TTT NNT SS9CCCSGGG0G0000000000000 [olololololololololalololololololololololalololo} 69,100 60,400 March 2,202 Ma: QDs SEM TONAr ORM Mr DDHAOMMOHNO od IMNMNNNNNTE TITIES SS f& | COOOGO90GGG0G00000000000 ecococcCCCCCOCCOOCCCCCCO Feb 28 2,108 Feb 2,108 6 Btu/hr.xF 0 Btu/hr.xF $0 Btu/hr.xF $9 10 Jan Q Btu/hr. ipin 41,956 Btu/hr. Q Btu/hr. 41,956 Btu/hr. EL OOTTMTONANNOMMrOOHOMMOHNO HOrOM 6 | MONNNNNVI TTT TEST IONS S nor 5 100000000 31 2,052 93,300 72,200 Jan OOCG00G0000000, ons AAQOOOSOCCSD0C00O a4 2,052 , 1 lower Plant Production & Hourly Variation 93,300 72,200 Boiler Seasonal Effic. batin onstant: iping: 5 tng? SSeS: Kwh/Mth: HDD/Mth Non- iping ace preh DOOA GM TEP TWTMMMMMMANOD OOOCG0000000000 ine alc Apr-90 Noat. Plant heat Radiator lo: Subsur: Eng To Surface Plant Variable losses: DODDHAGMTIETTNPTMMMMMMANOD NNMNNNMNVIITIT Ise TT ISS TTIM coco: ° ‘choo 1 h eococseCCcC00C00000000 CCCoCCCCCCCCCCCCCCSCCC0O gh g Elem Schoo 1 Fuel use, gallons Jr Hi Bldg. #5 Buildi: Hi z WASTE HEAT UTILIZAT Constant losses: Location Date: SYSTEM LOSS DATA. GENERATION DATA: WEATHER DATA BUILDING DATA Washeteria Annual 33,125 PAGE 1 OF 2 Dec Nov 4,255 3,473 2,703 May Gallons 4 er month Apri. Feb March Gallons of Oil used Jan Bhool gh Elem School Bldg. # 5 Building Jr Hi Total Use Washeteria Hi ! ! ! ! at iss o at a a! wn =~ 3 a 3 wm 3 a 3 3 n & ~- * & ~ a go og} 5 a ° fa om ! s o ° ro °o o . . . oy) a o “ ia ViddidditddnansrNNsseNMddAMNIEO 8 |MNAMNOMrOTvOMOMrarrmowwN in 8 Pdtdtdtdin dinners sede 5 Q DI MADALAMKKAMVONMMFAHDMMGOM |ON —_O | DOD WAIT ON TEMS TTA | 8 | MARALAMRAAANONA THOMASON < ALMMANNMNOMM SET TTTTETOMMMEM ISO A | eT Te TINNNNNUMMNNMNNNMMINS | ALMMNNMANNNM STFS TTT SEMMMMSM a ne a 5 1a & is Ns tl wocsonenenanpmmmemmmneen |i. ploscennecsnosectacmrenc | | pponoonpennnenneneeneemna | 21 NQMBLANGGANAAINAMOLANNAT1OS 9 | TOOMOTAIMODOE SNONSoNT TAIT |r 9 1 NO@ORONOOHANTHATHANNMORANINAT 10 | ereveieeencamvenenrere ge ee een | Fe Zl erenesrrrrse reese ress es | ZI MANNA STEMS TSETOMMMIM | ° ' a o vA a © \s ta | “ BOR AMR NAR AONMOBNABDNOCCOM@ ITA =v | OOVHWHORONNN@OMRARRUONsAT1O BL eMONOHOMMNANAMOMMINANNNOOCO® Ie 8 LAE MAME ATE NCBSONTENAAAG1ON —W | MOQOSH SMHS eseesOmAT | V | AOCCON ME NTN TEN TTANAAA | 0 2 JMAMAMAMAMAMMAAMMMMAMAMANNM | A OL MAMAMAM|MMmmmmemMmmeaMmmmme | O FAAMAMMAMAMMM-MAMMAMANA | ' an | 1o ! nv 0 is ! s i 1s . BLAOMKKANDACOTOrOOMCVOMCOON !AO vv |NOrMrOMToOMHBNAONTITEMMONN | O 2 | Nor mromMwwomanoMedsemnond |e BLOOMANNNCOMOMNOHHONMOREEA IO | HOCOOTAMAMAMEANMMMMMANKAd |S DB. AOCCORAMMMMMEAMMMMMMMNACdC | BLMAAAAAAAMAAMAMAMAMAMANAN II w f evsrsewnssonsesevesesegnenscgesesesevenevendies <= BL NAAN | | lon tn 1 s Iq ! 1o 1 © —— {= PL MBOAIMMBNOBKVOYNNONNNINNS [YD HL DPMOmuNNTNOON ANAT AT eANDE 4m | o DipsmomnnsnoorannsdeeN@R ar (oe 2 IRMSOONAMEAMAGATARAGT TTT ISA 2 HAAMENnnAAnAA Annee IN 3 NMMNMNOR REE R RRA R ERR OOwN IN EZ LNAAAAAANANANAMAMANANANAN [te | Adiditiidetidcintiicictieiciciciricietctetes | 0 6 fdtiditidtetitidiciridcidicicricictirictetriet [Oo ! ow is ! sa 1a In ! n { 7 ic | = | CAMOONR HWOKR eH dwWOMWMMON | RO AON SETS TOMMMMAMMMA |S DPI OnAANM Se TS TMMMMMMMMAd IS FI QAQeMOOdE AL AGAAMK AAAS TO | ANNAINANAANAAAAANAAAAANAE | AT NANAANNNANANNANNNANNNANN 1 BL NAAAAAAANANANMNAANAANANA IB In Bt na ! Ind io 1 oe ' 1@ tea ! a | fe | f @IMOMEwBWLLw.OMrOMrORRoarKennro ina SMM MOE EAA MeN enernwwowns ia Ol vermmworeeeerrerernewwnsgs in 4 Po gi ecannaqrenerark sored | wo INNA AANA NNS | 1 EI NNANNNNANANAANNNANNNNNNN 1 O Po BI AAA AAAS | + 3 70 ss . ! . ' cea lo 1 © 1 © Ia ' a “t io | I ' vi FISSRSSeKSAReArarrag seas an DO A AOU MAD NNRMNOMINMNMA = | 1n Dl eOMesddORA@nMNMMOMMMEE Ss 1O 4 out NON SIHROMNON- ALL MN MAAA | is DODOAONAAAMMVANAINAN AOD | 0 Fl AQHSSCNDANDMMANANAANADAD | bh ot FIMAKAAAAAMMAMMAMMAMMMATI | ‘ NANAAAMAMAIMAMAMMAMIAAN | 1 GE LAAAAAAAAMMAMMAMAMMAMANAS | ST EEE gt lon ta : a 0 5355 On 1 1m B nN Dob oF In iv Bl a mmm 1h dq noocrongsdadwedaanssinnMeH | oo 10 A MoocCronssdadednaarssNNNON!oO O shen Po SH tanner uh OOO@OCOnASrrisam | aN tea OF AOR ROR ANNOOCOBOOONAGHATOM ID GV ands Bp BH{ Mannaammmmammammmmammmmnn |e m” SE LAANANAMMMAMMAMMMMAMM|MM | |mart Bl Be at | [> 83 ji eas gt a = 1m a a woe BL a jn @ 1m o a vO" Pd rtaa@aawmnr nr Cn NMsOMANLOs IND DE Lem AANOEr VemNAIAMNAR ox 1 £4 latnn@MannMrMronmMnsamnaarorin & BE SU MmoQMOMAAMTMAMSTNAMMOA [RM EO | VAIO Ae DOMAAOM me mmr own | BU 1 MMODDOMAAMTMAMTTNNONNONr I~ wo ze Sa MMMAMAAMAAMMAMMMMMAMMMMMAMM No @ SIAR RA NAAN INIA) | se Sgn emremncronenn ae Zt a <a oO is & va 03 > = 8 Ic sz a9 z a 3 > > x aed Os 1 . ' a O04 HE Bg lonpomeqnamamamaarancooas trun ct 10 DIOCAOOMGOADDDDOMBDO-MNOCOMO!— HM WED £0 |ANOONOTTAONRAOCOCHOMGASHM lor — 1o NOL HAOONOATTAOARACOHOMAATHM1O TF AGS ' 9 SD RSENEREIE REESE we AREY seine ne CER EDEDE DEED LEE « {x Z& | MAIMAMMMMmmEMMmeree eM Nn © Q0¢ 1 Ima Bb Is £1 12 N yyy. 1 > s 66 a ' sz ay 3 x a Pog 7 HEI dora OORe Reeds worn | ow DArOrsATOONR TRAM \ a gi ednorogonoreeeneeerdsverr ia © 28 | FQKI SAAT ATIAAMOML OA ING PG | OM Cr OtseerNNH IIIS SANNS® | BS [SQ deacgdadagmoMenona [A © mmr» SE BB ammaMameserIMSTT TSTMS | Ae AND | Tee ee AINA | 3 BA LAMAMAMMSTETIMSSTSSSAM SIM (AY A AI & ! tao wo rc ot am 3355 atu a 3 1o >t a 9000 Stog@ s 2} im a] a mime BEY amenerancdamenerancname! @ Hh] dameneroncdAMeNnen@ncdams | OH | AAMPNCROROFAMTNORODnOdAMT 5854 Ht o3 SHAM MIIAINNS | AAA AAA Bra AAA AAA AAAS | BI gz a4 9 home > SSS gt 4 Ba e is $9 Bg Sasa Pe B8 1g 58 Bg $33 is i 4 mtb 1a 2 wt a to BE ow Bow 1a v gig ge @ 1p 9 io g 3 ° @ =i x = te = Conce| Bt 1 WIP, + HS, ELEM Gallons State of Alaska DN Walter J. Hickel, Governor Alaska Energy Authority A Public Corporation May 23, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Noatak Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. wi. Cover page - arrow on map shows location of Naotak, not Noatak. Noatak is located approximately 60 miles north of Kotzebue. Coordinate. Executive Summary, page i - change "Project Cost for concept #1" in table to "Project Cost for Concept #2." Also, capitalize "C" in "concept #2" in last paragraph. Executive Summary, page ii - paragraph 3, change "three" to "two", "trips to... each year." Table of Contents: IV.B - Change "Building" to "Plant." IV.B.4 - Should be page 18, not 17. VID - Should be page 37, not 39. VIIA - Should be page 39, not 38. Appendix A - Include worksheet calculations. moow> List of Figures: A. Figure IV.6 - Change "Building" to "Plant" in both the figure on page 19 and List of Figures. B. Figure V-7 - "Same as above." List of Tables: A. IV-B - Change "Building" to "Plant" on both page v and 18. PO. Box AM Juneau, Alaska 99811 (907) 465-3575 OND 7BO 190869 701 East Tudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 Mr. Earle Ausman May 23, 1991 @ @ Page 2 v7. Section I.C.3 - Figure 1 is on page 20, not 19. v8. Section I.E - Northwest Arctic "Borough" School District, add "Borough." “8. Section II, paragraph 1 - change "building" to "plant" in water treatment "building." 10. Section II, paragraph 2 - add "Borough" to Northwest Arctic "Borough" School District. y Vil. Section III.A - paragraph one contradicts itself. It says "Equipment... will be installed..." and then goes on to say "Position No. 1 now has... and positions No.4 & 5 now have..." Coordinate with table III-A. Also, replace "stand by unity" with "stand by unit." 12. Table III-A - KTA 1150's are 1200 rpm. 13. Section IILC - last line, change "Figure III-2" to "ITI-3." 14. Section III.D - figure V-2 is on page 21. Figure V-3 is on page 22. 15. Section [V.A.3 - Fuel consumption in school buildings in paragraph 1 does not agree with table IV.A. Should paragraph one read: "20,000 gallons used by the high school and "Junior High School"? Coordinate. 16. Section IV.A.4 - clarify that the heating coil will be located in the "return" duct. 17. Figure V-2 - correct arrow directions on "new distribution piping." 18. Figure V-3: A. Engine and heat exchanger piping is crossing connected. B. Coolant piping bypasses radiators. C. KTA 1150 heat rejection to coolant is 560,000 BTU/HR. Why is the primary heat exchanger only 300,000 BTU/HR. D. The cooling system as shown can not function. Correct. 19. Figures V-5 through 7 - Figure V-1 indicates Arctic Piping is 3" diameter. Figures V-5 through 7 indicate Arctic Piping is 2" diameter. Coordinate. 20. Section VI, page 30 - last paragraph, replace "engine" with "primary" in first line. 21. Section VIII.A - paragraphs 1 and 2, figure V-3 is on page 22. 9102\JD0797(2) Mr. Earle Ausman May 23, 1991 @ @ ‘ Page 3 22. Section VIII.B - paragraphs 1 and 2. Correct page numbers for figures V-4 through 7. Also, change "building" to "plant" in paragraph 2. 23. Section VIII.C - paragraph 1, change "three" to "two" "times per year." 24. Table VIILA: A. 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 trom Construction Cost. (Use similar format to HMS Summary Sheet.) Note: the construction cost for a building should be the same for each scenario. The "General Conditions" should include any variance in; freight, per diem, travel, profit, etc. 25. Appendix A: A. Waste heat worksheets and other calculations are missing. B. Module air changers with a KTA 1150 should be: 13 + 1 = 14 AC/HR, not 24. (This is based ona module size of 12' x 12'x 30' = 4320 feet? and 930 cfm = 55,800 ft?/hr. 55,800/4320 = 13 AC/HR.) Revise. 26. Appendix B: A. Number 2 - were discussions with "ADEC", or "PHS" or possibly "VSW"? B. Number 6 - most of second paragraph is missing. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, Ae f Shoe Steven Stassf1 Rural Systems Engineer SS:jd 9102\JD0797(3) @ @ polarconsult alaska, inc, ENGINEERS * SURVEYORS « eNercy consuLtants October 25, 1990 Alaska Energy Authority PO Box 190869 Anchorage, Alaska 99519-0869 Subject: Noatak Waste Heat Project Atm: Brian Gray, Engineer Dear Brian: We appreciate your comments on the draft for Noatak and have the following responses. Please understand we realize that you are a new reviewer and your approaches may differ from John's. We hope you understand it costs us money and time to make changes. Therefore, we think that changes which are preferential in nature should not be made. This is not to say that we will ignore mistakes or improvements where warranted and not costly. This statement is based on the fact that there are three previous approved finalized documents which had very detailed review, which we believed established the format for this work. We have made corrections or added clarifications as per the following paragraphs: 1, 2(see comment), 3, 7, 8, 9, 10, 11, 12, 13, 14, 15A, 15B, 23B(do not agree), 23C, 23E, 23F, 24, 25, 27, and 28. be So As for comment 2. we have attempted to keep the executive summary short and directed since it is the only thing most people will read. A discussion of alternatives takes away from this. We have put this discussion in Noatak as requested. We need a overall discussion on the philosophy of the work we are doing and what we collectively know and more importantly what we do not know. a. We are not doing design except to the extent necessary to reasonably size components for pricing. 1503 WEST 33RD AVENUE e SUITE 310 ¢ ANCHORAGE, ALASKA 99503 1 PHONE (907) 258-2420 e TELEFAX (907) 258-2419 e@ e@ polarconsult b. In many cases we do not know the exact amount of oil used due to measurement inaccuracies. The amounts can vary considerably based on the time the measurement was made and estimate of the quantity of oil left in institutional tanks. In some cases we rely on operator memory for how many gallons of oil are used. c. Oil prices, hence economics, are having great fluctuations. If AEA believes it can predict the price of oil within 10% over the next 25 years then we have a swell bridge for sale. d. We do not know the distribution of heat usage in institutional buildings, because there is not established base information and also because there is and will be variance with individual practice and control operations. We do know there are some sophisticated controls in many of the newer schools. e. We do not know the relationship of community electricity demand and the need for institutional heat. f. We do not know which generator will be run. It depends on the operators. So for our calculations we assume that the one which is run is the unit that produces the least heat. Therefore, this portion of our analysis is conservative. Further, with several sized machines depending on the operator and load requirements several different sizes and types of equipment can be run. g. We do not know what the future will bring in terms of prime mover efficiencies. For example a ceramic engine would have much less heat available then current machines. Also exhaust gas heat recovery has not been factored into the situation which can add considerably more heat to the system. Many of the machines produce more exhaust gas heat than jacket water heat, and it is possible to add wet manifolds to equipment which will recover more exhaust heat. h. We can not predict community growth and neither can AEA. There are so many unknowns involved, that extrapolation into the future is very uncertain. i. In the past we investigated heat used by domestic hot water heaters in the schools. 7) The estimated amount of oil utilized was trivial, less than 220 gallons at Noatak. If it were more than trivial, a inexpensive coil heat exchanger, very small circulation pump @ oe polarconsult and thermostat could take care of the problem. Or a heat exchanger and thermostat tapping off of the main boilers could be used. Because of the uncertainty in oil quantities we do not believe we should change these values. Additionally the majority of the schools investigated utilize their main boilers for domestic hot water production. j. Although we are getting a approximation on pumping power requirements, the use of individual pumps at each user will require work that more properly is done during design. At that time hydraulics can be optimized and final flow rates arrived so that meaningful pump selections can be made. The estimator, HMS, at this stage, does not price the difference between a 1/3 and 1/2 horsepower pump with certain impeller characteristics. k. We have used Peter Hansen's program and input values for all 9 of our analysis. We have made some improvements in the program but stick to it as it is readily understood by all of us. At the onset of the project we reviewed the daily heat distribution values and could not come up with heat distribution numbers which we believe were significantly better. So we stuck with the standard which have gone through numerous reviews, has been a final value in three of our reports, and in all of AEA's past work. We checked the dates on the programs and they are only one month apart. Our version was dated November 1989. 7” gy We have rerun Noatak with the new values to see what the effects are. The reduction AZ is 277 gallons or 1.1% of the total. We do not agree there is superior rationalization for using values derived for Norvik then the ones we have used, that were approved. If AEA believes this is significant, then we will make the changes. We estimate because of graphical, text and other report changes that it will take 6 us man days and cost about $4,000 to make the changes on the balance of the reports. 1. One difficulty we had with this project, which cost us substantial time and worry, was the interrelationship of AEA and AVEC as to the physical requirements of the project. After much thinking and realizing we had to solve the problem we arrived at following conclusions, and assumptions. @ e@ polarconsult o Based on meetings with AVEC we concluded we could design piping systems which would mostly would accommodate the new systems using circulation by the engine pumps. If during final design we felt engine pumps were marginal, 1 loo ae then small booster pumps would be employed or at least provision for the same { |yor AC yo! would be made. el yo ¥ o We know that there are extensive outages in a number of AVEC plants. We utilized the average in our calculations. o We know that we could design and build a much less expensive far more reliable cooling and district heating system for AVEC and AEA which would not have the convolutions we have gone through trying to convert AVEC modular schemes. We have followed directions however and worked with what we have, not with what we would like or could do. o Weare not convinced that locating the pumps at the user facility is best or least expensive. In addition it precludes more sophisticated electronic controls which can better optimize system efficiency. But we have done this as directed. o If an AVEC generator set with a radiator is moved and the drawing shows it connected to remote radiators it is obvious the radiator is removed. Is this a significant detail? Should a credit be made for the value of the used radiator and should we elevate its importance by discussing it in the text? m. At this stage we did not concern ourselves with the heat transfer media used on the user side of a facility. It is clear that during the design phase the exchangers will need to be sized on the basis of the media used. n. Our observations are that most user facilities have the pumping capacity to handle an additional 3 to 4 psi drop. If in actual practice this proves not to be the case then the circulation pumps can be changed for a nominal fee. In general there are no pressure readings available to arrive at the head being produced by the pumps. User system piping is complex. It is far less expensive and more accurate to deal with the problem empirically. i @ e@ polarconsult o. The 96,000 BTU value for a gallon of heating oil is arrived at by using a gross heating value of 132,000 BTU for arctic grade diesel times a estimated efficiency of 73% for boilers. Since our report conclusions are entirely in gallons of oil saved, these assumptions are critical. It should be recognized that oil fired equipment efficiencies vary greatly and we could easily be more then plus or minus 5% off in these assumptions for an individual case. Further, the BTU content of oil varies depending on the source, blending and grades used, so there can be another swing of 5% or more for this reason. These alterations introduce a great deal more uncertainty than any daily temperature calculations. Again thank you for your comments and it is a pleasure to have another University of Alaska graduate on board. Sincerely yours; Lal Earle Ausman MEMORANDUM Date: 10/08/90 To: Earle Ausman Polarconsult Alaska, Inc. From: Brian Gray Rural Systems Engineer Alaska Energy Authority Re: Noatak Waste Heat Recovery Draft Report We have reviewed the Draft Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. Executive Summary paragraph 1 - The price of fuel oil is listed as $2.80 per gallon while section IX-B lists the cost of fuel for the schools (which represents the OLD vase majority of fuel displaced by the waste heat) as 1.67 per gallon. This price is very misleading and should be clarified. Also note that the annual savings vs. fuel saved in paragraph 4 does not agree with this price. 2. Executive Summary paragraph 3 - Add a sentence explaining the three concepts that were investigated. Oe Also, concept #1 may not be the most economical because concept #2 saves 88% of the fuel that concept #1 does and has a lower installation cost. This statement should be reevaluated upon formulation of cost estimates. i Executive Summary paragraph 4 - Revise to say "Project 0 cost ... for Concept #1 are as follows". If the recommendation from comment 2 is for concept #2 then revise accordingly. pl * Section I-A - See comment #1. gh > Section I-C-2 - delete comma in sentence "Availability of village-supplied ...". 6. Section III-A - The waste heat utilization simulation worksheets use a John Deere generator for determination of the heat available. Is the John Deere in position WO Z. #4 scheduled to be used as the lead generator? If not O revise calculations to reflect the actual model used as LDH the lead generator. AIG Prov! re? “7. Section III-c, last paragraph - This section is unclear. A statement should be added about the 190 gallons of fuel required for additional heat in the ONC module that has a running generator. A statement 4 should also be added which clearly identifies which combination of heat loss figures was used in the waste heat utilization simulation worksheets. Y 8. Section III-D, paragraph 1 - This paragraph should Ole mention removal of the skid mounted radiator as 4 proposed in Figure V-3. See comment #15-C. 4 9 Section III-D, third paragraph on page 11 - Report should clarify that the electrical systems for the new heat exchanger module only will be connected into a new Cc panel at this location. We assume that the devices located at the user facilities would be connected into the electrical service for that particular building. Y 10. Section IV-A-3 - Table IV-A indicates that 14,000 T gallons was used by the high school and 6,000 gallons — by the junior high school. Clarify. Also, how is domestic hot water heated at the various school facilities. If oil-fired water heaters are used, the Of _ monthly oil consumption should be decreased by an JE <~ eporboriake factor. Y11. Section IV-A-4 - A heat exchanger and secondary pump is / neither required or desired for the junior high school Ov system. The heating coil provides essentially the same separation on a forced-air system that a heat exchanger provides on a hydronic system. Also clarify that the pl _coil will be located in the return air duct. Y12. Section IV-B-4 - This paragraph should reference the Ou 7 water treatment building not the school. Alsoa statement similar to this should be added to section Vi7 IV-A-4. “13. Figure V-1: OL A. Label the buildings at the AVEC plant. B. What is the building that is labeled "school" east OL of the junior high school? Was this building considered as a waste heat user? oct: The legend indicates hatching for the waste heat user buildings. Hatch buildings accordingly. distribution piping. Base pipe size on a 20F temperature drop. oe D. Indicate pipe sizes for the waste heat y oral L Figure V-2 - Delete the heat exchanger at the junior high school. Also, indicate pipe sizes for the waste heat distribution piping. Base pipe size on a 20F temperature drop. Figure V-3: A. In general this drawing is difficult to read. Additional line weights and/or line types should be utilized to increase clarity. Oe. The drawing shows engine #4 in both modules. Revise to indicate location of engine #5. engine #1 discussed with anyone from AVEC? Is it en Was removal of the skid mounted radiator from 18. 19. 20. likely that the pump on this engine will have sufficient head available to circulate through the distribution piping, accessories, valves, and remote radiator as proposed? These questions should be addressed in Section III-D. Figure V-4 - Delete the heat exchanger and secondary piping from the system schematic. Section VI-B-1-b-5 - Add "primary" prior to "heat exchanger" and add "pumps," after "piping,". Also, replace "Engine" with "Primary" in the first line of the fourth paragraph on page 29. Section VI-B-2-a - The field notes list the soils as very ice-rich permafrost with clear ice lenses and poor materials over the top. Is it feasible to bury hot distribution piping in this location? Also, report should indicate if there are any known buried utilities along the proposed route of the heating lines. Section VIII-A, paragraph 2 - Revise "Unit #3, and Unit #4" to say "Unit #4, and Unit #5". Figure IX-1 - Add months to the horizontal axis similar to Figure IxX-2. Appendix A, Page 1, Power Plant Heat - Values of 1.5 and 1.0 ACPH were added to the combustion air requirement in the building heat summary calculations, not 2.0 as indicated in this paragraph. Also, the value of 24 ACPH only applies to one of the modules, a unit containing a standby generator. Revise accordingly. Appendix A, Page 1, User’s Monthly Fuel Usage - Provide an explanation in this section for the constant 125 gallon monthly fuel consumption. cy 23. Appendix A, Waste Heat Utilization Simulation \ Worksheets - The following comments apply to the worksheets for all three concepts: A. VY B. VY ¢@. Confirm that the generator being used for heat availability data is indeed the intended lead unit. See comment #6. Revise units under generator data to "(BTU/HR) /(KW)" not KWH as indicated. "Building #5" is not mentioned anywhere in the report and does not enter into the calculations. Delete this entry. Hourly heat demand variation appears to be incorrect. Heat demand should decrease during the daytime due to higher outside air temperatures and increased internal heat gains. We have attached an example heat demand variation that you may wish to use. Revise calculations as required. Revise page numbering to Page 1 of 3, Page 2 of 3, etc. Page 3 indicates that the user building hydronic systems utilize water. Is this true for all buildings? ‘wk 4. Appendix A, Building Heating Summary Calculations - The following comments apply to both versions of the calculations: ~ A. YB. Qualify where the value of 96,000 BTU/Gal for fuel oil comes fron. List the units for Bldg. Heat, Heat to Ambient, etc. At’ 25. The field notes should be checked for grammatical errors and corrected. O26. Provide a list of contacts and phone numbers for this project. yb “27. Revise the map on the front cover to indicate the actual location of Noatak. “28. Provide color photographs in the final report. NOATBGMI1 — ee NOORVIK WASTE HEAT RECOVERY trae PAGE 1 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: NOORVIK Date: December 14, 1989 Heat rate: 2466 Btu/kwh produced System loss: 54,066 Btu/hour (approx. 36 BTU/FT arctic pipe) Total generation: 1,882,486 kwh/year Vern Local degree days: 1784 1846 2689 1418 944 663 263 ae Assumed diurnal heat i Power plant monthly generation: demand variation: py snananenneweenenn= i JAN =FEB OMAR OAPR MAY, JUN JUL Fraction:6.6813 6.6916 6.6923 6.6883 6.8865 6.6646 6.6646 Winter Summer Hour | Kuh: 88866 99266 186688 95668 87266 76066 76066 Diurnal 6.6494 8.8494 1 variation 6.638 6.638 6.658 6.658 6.645 6.645 6.645 6.6477 8.6477 2 6.656 6.656 6.636 6.656 6.646 6.646 6.646 6.6466 6.0468 5 i 6.634 6.634 6.634 6.634 6.636 6.636 6.636 6.6445 8.8445 4 : 6.654 6.654 6.634 6.634 6.635 6.635 6.635 6.6428 6.6428 5 6.633 6.633 6.653 6.653 6.635 6.635 6.635 6.6414 6.6414 6 / 6.634 6.634 6.654 6.634 6.638 6.658 6.638 6.6461 6.6481 7 / 6.638 6.638 6.658 6.638 6.638 6.638 6.638 6.6598 6.8396 8 6.642 6.642 6.642 6.642 6.646 6.646 6.646 6.6381 6.8381 9 } 6.642 6.642 6.642 6.642 6.645 6.645 6.645 6.6374 6.8374 16 6.647 6.647 6.647 6.647 6.647 6.647 6.647 6.0378 6.6378 "1 j 6.648 6.648 6.648 6.648 6.646 6.646 6.646 6.6567 6.6567 12 \ 6.647 6.647 6.647 6.647 6.648 6.648 6.648 6.8367 6.8367 3 6.645 6.645 6.645 6.645 6.658 6.656 6.856 6.6378 6.6376 14 | 6.647 6.647 6.647 6.647 6.652 6.652 6.852 6.8374 = 6.6374 15 i 6.648 6.648 6.648 6.648 6.658 6.856 6.856 6.8381 6.6381 16 \ 6.648 6.648 6.848 6.648 6.658 6.656 6.856 6.8398 6.8398 17 . 6.649 6.649 6.649 6.649 8.645 6.845 6.645 6.6461 6.6481 18 j 6.846 6.646 6.646 6.646 6.647 6.647 6.647 6.0414 6.6414 19 6.643 6.643 6.645 6.645 6.656 6.856 6.856 6.6428 6.8428 2 ( 6.638 6.638 6.658 6.658 6.645 6.645 6.645 6.6443 6.8443 21 , 6.658 6.638 6.658 6.858 6.641 6.641 6.641 6.6466 6.6468 22 6.641 6.641 6.641 6.641 6.641 6.641 6.641 6.86477 6.8477 23 6.645 6.645 6.645 6.645 6.641 6.641 6.641 8.8494 «8.8494 24 6.646 6.046 6.646 6.646 6.643 6.643 6.643 Building use per wonth, gallons of fuel oil BUILDING 1, HIGH SCHOOL 3918 «24311288 = 2628S :1739 6 6 BUILDING 2, COMMUNITY BUILDING 95 «934 1857718478 58S 133 BUILDING 3, TREATMENT BUILDING 1719 1779-2813 1366 916 581 23 BUILDING 4 6 6 6 6 6 6 6 BUILDING 5 6 6 6 6 6 6 6 BUILDING 6 6 6 6 6 6 6 6 356 AUG 6.6728 78666 6.645 6.646 6.636 6.635 6.635 6.838 6.638 6.646 6.845 6.647 6.646 6.648 8.656 6.852 6.858 6.656 6.645 6.647 6.656 6.645 6.641 6.641 6.641 6.643 186 343 at se 6.66568 76466 6.645 6.646 6.636 6.635 6.835 6.638 6.638 6.646 6.845 6.647 6.646 6.848 6.656 6.852 6.656 6.656 6.645 6.847 6.656 6.845 6.841 6.641 6.641 6.845 1654 6.6946 162466 6.645 6.646 6.636 6.635 6.635 6.638 6.638 6.646 6.645 6.647 6.646 6.648 6.656 6.652 6.658 6.656 6.845 6.647 6.656 6.645 6.641 6.641 6.641 6.643 1787 6.6985 166466 6.638 6.636 6.834 6.634 6.633 6.654 6.638 6.642 6.642 6.647 6.648 6.647 6.645 6.647 6.648 6.648 6.849 6.646 6.645 6.638 6.638 6.641 6.645 6.646 2894 DEC 6.1864 115268 6.638 6.636 6.634 6.834 6.633 6.634 6.638 6.642 6.642 6.647 6.648 6.647 6.645 6.647 6.648 6.648 6.649 6.646 6.645 6.638 6.658 6.641 6.645 8.648 4846 1666 2018 CONCEPT 3 ANNUAL 15,849 CHECKSUM 1 1,682,488 polarconsult alaska, inc. February 5, 1992 @ @ District Heat Report M in Village Waste Heat R 4. As the use of engines is entirely up to the local operator, it is difficult to 5.A. 5.B. 12. 13. 14. determine which single, or which combination of engines will be running at any one time. It was assumed that the most efficient engine, the Caterpillar D3412 in position 1, which rejects the least amount of heat, would be run continuously. Engine manufacturer's specification data is listed in Table III-A. Waste heat utilization simulation work sheets used more detailed heat rejection information at various loads, supplied by the engine manufacturer's. Heat loss figures input into the station heat loss section of the waste heat utilization simulation work sheets was for an engine running in a conex. This combination used the most amount of waste heat for station heat. Total fuel usage is correct as shown in Table IV-AA and Appendix A. Values listed in Table IV-A are incorrect. Preliminary analysis has shown that circulation through the heat exchanger & piping system can be accommodated by the existing pumps. If during final design we find that existing pumps are marginal, then larger pumps would be employed. Figure V-1 is correct, Concept 1 is 420' of 2" diameter. Heat losses in the distribution pipeline would double, but the amount of heat displaced would not change as there is three times as much heat available, as is required. Figure V-2 and WHU model Concept 1 should both read, 420' of 2" diameter. The distribution piping in Figure V-1 is 4" diameter as shown. The supply piping in Figure V-4 is 2-1/2" as shown. The piping necks down from 4" to 3" at the tee off the main and down to 2 1/2" at the building. Larger diameter distribution piping is used to keep the pipe head losses down, which in turn keeps the pump sizes and annual operation cost down. The distribution piping in Figure V-1 is 4" diameter as shown. The supply piping in Figure V-5 is 3" as shown. The piping necks down from 4" to 3" at the building. Larger diameter distribution piping is used to keep the pipe head losses down, which in turn keeps the pump sizes and annual operation cost down. The distribution piping in Figure V-1 is 4" diameter as shown, The supply piping in Figures V-7 is 2" as shown. The piping necks down from 4" to 2" at the tee of the main. Larger diameter distribution piping is used to keep the pipe head losses down, which in turn keeps the pump sizes and annual operation cost down. polarconsult alaska, inc. e e@ February 5, 1992 District Heat Report 15.A. The old elementary school is a single story frame structure heated by two forced air furnaces, and one boiler. The district heating line will loop through the building with connections to the boiler, and coils in the return ducts of the two forced air furnaces, and back to the power plant. (See Figure V-8.) Piping will tun from furnace room to furnace room under the building in the crawl space. 18. The connection of the old elementary school building to the district heating system includes installation of the piping from the face of the district heating module to the building, and all equipment and connections within the mechanical rooms, as shown in Figure V-8 on page 28. 23.A. Please see questions 4 & 5. 23.B. The 96,000 BTU value for a gallon of heating oil is arrived at by using a gross heating value of 132,000 BTU for arctic grade diesel times an estimated efficiency of 73% for boilers. Since our report conclusions are entirely in gallons of oil saved, these assumptions are critical. The BTU content of oil varies depending on the source, blending and grades used, so results can vary plus or minus 5% due to variations in heat content. Further, oil fired equipment efficiencies vary greatly which introduces another plus or minus 5% possible variation in the results. State of Alaska Walter J. Hickel, Governor Alaska Energy Authority we / A Public Corporation TT ve coo May 23, 1991 scat Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Mountain Village Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. Executive Summary, paragraph 4, capitalize "C" in Concept. Table of Contents, list of figures - Tables and glossary page numbers don't correspond to actual page numbers. Coordinate. Section HI.A., paragraph 1 - "Module #4, 'contains", change to "consists." JS Section IIIB. - indicate that position #1 D3412 at 1200 rpm is used as the lead generator in the WHU worksheet and indicate basis of assumption. Section IIIB: \ A. Program notes in Appendix A indicate that "engine manufacture's test 4 L data" was used, not the data in Table III-A. Coordinate. B. Section III.C, page 9 - Appendix A worksheets assume position #1 is AX? lead. Coordinate. Ds 6: Section III.D, page 10, paragraph 4, change "consist" to "consists." 1. Table IV-A & IV-AA, page 13 & 14, the total fuel use for the new elementary, middle and high schools in table IV-A does not agree with table [V-AA or Appendix A, concept 6. Coordinate. 8. Section IV.A.4. are the existing circulations pumps capable of accommodating A the head imposed by the heat exchanger and piping? 9. Figure V-1 - "Concept 1, 420 feet of 2" diameter pipe does not agree with a Figure V-2 or appendix A, Concept 1 WHU model. Coordinate. or Ex: \/ | |Is coermeer V2 tof CO ELT aes ANTIC I POTE Vieé LOKXES LK © PO.BoxAM Juneau, Alaska 99811 (907) 465-3575 910201 3 fi? Box 190869 704 EastTudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 Mr. Earle Ausman May 23, 1991 e Page 2 10. Figure V-2, direction of flow arrows are incorrect. 11. Figure V-3, errors in piping arrangement. yo 12. Figure V-4, equipment schedule indicates 2-1/2" piping. Coordinate with Pe | figures V-1 & 2 and appendix A, Concept 6 WHU model. 13. Figure V-5, equipment schedule indicates 3" piping. Coordinate with Figures 4 V-1 & 2 and appendix A, Concept 6 WHU model. 14,/_ Figure V-7, equipment schedule indicates 2" piping. Coordinate with Figures a4 V-1 & 2, and appendix A, Concept 6 WHU model. 15. Section IV.A.4: AG Add a description of the proposed waste heat tie-in to the "old" ea elementary school with figures. B. Page 16, in "see figures V-5" change "figures" to "figure." 6. Section IV.B.4, change "(see figure IV-6)" to "(see figures IV-6 & V-7.)" 17. Section VI.B.1.b, page 32 - replace "Engine" with "Primary" in first line of paragraph 4. 18°) Section VIILB. - include description for Concept 1, "Old" Elementary at Ae 21. 22. Section VIII.D - change paragraph to reflect both concepts 1 & 6. Table VIILA. A. Add to table VIIA: 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 the same for each scenario. The "General Conditions" should include any variance in; freight, per diem, travel, profit, etc. Section IV.A. - change first paragraph to read, "There is approximately 64,755 gallons..." Add months to X axis on Figure [X-2. 9102\JD0801(2) Mr. Earle Ausman ‘ May 23, 1991 @ @ : Page 3 x nN a nk ak XC 23. Appendix A: IN ~ Power Plant Heat, according to the WHU worksheets, the D3412 at / 1200 rpm is used as the basis of calculations. Please reflect this assumption in appendix A, paragraph 1 and section III, page 9. (see 5b.) B. Clarify where the value of 96,00 BTU/gallons for fuel oil is from. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, bb Spon S even Stassel / Rural Systems Engineer SS:jd 9102\JD0801(3) MEMORANDUM Date: 10/19/90 To: Earle Ausman Polarconsult Alaska, Inc. *) From: Brian Gray Rural Systems Engineer Alaska Energy Authority Re: Mt. Village Waste Heat Recovery Draft Report We have reviewed the Draft Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the pre-final submittal. 0|C1. Executive Summary page 1, paragraph 1 - Mt. Village is not located in northwest Alaska but rather western Alaska. WIC 2. Executive Summary page 1, paragraph 3 - Provide an explanation of the concepts investigated either here or eo ac Executive Summary page 1, paragraph 4 - Revise to say "Project cost ... for Concept #6 are as follows". ov Executive Summary page 2, paragraph 5 - See comment #1. Oe Table of Contents - Capitalize "Heating" on VIII-B. ge &- List of Tables - Delete the word "usage" in IV-A. a 7. Section I-D - See comment #1. , he Section I-E, paragraph 2 - Correct spelling of O "community’s". -— ‘Section III-A, paragraph 1 - Is there a position #2 Ne / that is currently unoccupied? If so, should oe arrangements be made in the new piping to accommodate a /future unit? 10. Section III-A, Table III-A: OW”: The generators listed in this table do not agree with those listed in Field Notes item 13. - Coordinate. rae Is generator #4 actually the same model as generator #1 only running at a higher RPM? Sk Confirm the data shown in Table III-A. ne Cc. A statement should be added to Section III-A indicating which generator is the lead unit. Section III-B - The Program Notes in Appendix A indicate that the engine manufacturer’s test data was used not the engine specs listed in Table III-A. Coordinate. Section III-C, paragraph 1 - Does each of the radiators connected to units 1 & 3 have sufficient capacity to reject all of the heat produced by either engine? If so, add a statement similar to the one for units 4 & 5. Section III-C, paragraph 3 - A statement should be added which clearly identifies which combination of heat loss figures was used in the waste heat utilization simulation worksheets. Section III-D, paragraph 1 - Will one of the remote radiators be adequate to meet the heat rejection requirements of any one of the four generators? Section III-D, fourth paragraph on page 10 - Add "for the new heat exchanger module" after "district heating electrical systems." Section IV-A - Is the old elementary (BIA) school still used as an elementary school or has its function changed? Clarify. Section IV-A-3 - Revise "1999" to "1989. Table IV-A: A. The total annual fuel oil consumption for the old elementary school of 20,832 gallons does not agree with the figure in Table IV-AA. Coordinate. 19. vv / @ @ The total annual fuel oil consumption for the high school of 102,255 gallons does not agree with the figures in Table IV-AA or any combination of buildings listed in the Waste Heat Utilization Simulation Worksheets. Indicate which buildings this figure applies to and coordinate with Table IV-AA. Section IV-A-4: ya Coordinate the grades of students attending the new elementary school with the information listed in Section IV-A-1. B. An estimate of the quantity of fuel oil consumed for domestic water heating should be provided. We question the economic feasibility of providing a second heat exchanger for domestic hot water. This comment applies to all three school buildings. Nt yak 20. Section IV-A-4 <adaress whether the existing new elementary and middle school heating system circulating pumps are likely to be able to accommodate the additional head imposed by the heat exchanger. 21. Section IV-A-4, paragraph 3: A. A heat exchanger and secondary pump are neither Oe required or desired for the high school system. The heating coil provides essentially the same separation on a forced-air system that a heat exchanger provides on a hydronic system. Also, Areata that the coils will be located in the return air duct. B. How is the swimming pool heated? Was any Wy provision for providing waste heat to the pool Oe considered? Section IV-B-3 - The statement that during the summer no heat was assumed necessary does not agree with the sample calculation in Appendix A or the figures in Table IV-B. Coordinate. 23. Figure V-1: ja. Provide a north arrow. Ov: Identify the line shown running from the river to the high school. The linetype is not indicated in the legend. - / Is the building labeled "Head Start" the same 2 / facility referred to as the preschool in the / calculations? Use consistent names. CB. Label the buildings at the AVEC Site. 24. Figure V-2: Ya. Delete the heat exchanger at the high school unless it is intended for pool heating. 1p. Indicate where the various pipe sizes occur. SV 25. Figure V-3 - The flow patterns should be checked \ thoroughly as it appears there may be some errors in the piping arrangement. 26. Figure V-4, V-5, V-6, & V-7 - Correct the spelling of Grundfos" and indicate the estimated-GPM, head, and '. motor horsepower for the pumps. —NS 27. Figure V-5 - Delete the heat exchanger at the high WW school unless it is intended for pool heating. away from the wall to avoid conflicts with the Or Figure V-7 - Move the space for user equipment further electrical gear service clearances. Oe: Section VI-B-1-b-5 - Add "primary" prior to "heat exchanger" and add "pumps," after "piping,". Also, replace "Engine" with "Primary" in the first line of the fifth paragraph on page 31. VL 30. Section VIII-D - Is insulation of the floors included in cost estimate for modifications of the existing power plant? | 31. Table VIII-A - It appears that Concepts 6 & 1 are O presented, not Concepts 1 & 2 as indicated. Revise as required. O32. Section x - See comment #1. 33. Appendix A, Page 1, Power Plant Heat - There is no indication on the Building Heating Summaries that an additional 2 ACPH has been added. Also, if the Caterpillar D3412 in position 4 is running at 1,800 RPM AC as indicated in Table III-A and is the lead unit the infiltration rate should be in excess of 37 ACPH. Revise as required. 34. Appendix A, Page 1, User’s Monthly Fuel Usage - Provide an explanation in this section for the constant 250 Ol. gallon monthly fuel consumption. See comment #22. Appendix A, Program Notes - The reference here should be to Table III-A, not Table III-B. Appendix A, Waste Heat Utilization Simulation Worksheets - The following comments apply to the worksheets for all concepts: an Confirm that the generator being used for heat availability data is indeed the intended lead unit. See comment #10. B. Revise units under generator data to "(BTU/HR)/(KW)" not KWH as indicated. YE Hourly heat demand variation appears to be incorrect. Heat demand should decrease during the daytime due to higher outside air temperatures and increased internal heat gains. We have attached an example heat demand variation that you may wish to use. Revise calculations as required. D. Page 3 indicates that the user building hydronic systems utilize water, not glycol. Is this true for all buildings? a The Variable Losses for plant heating will probably have to be revised to account for the higher air change rate in the lead generator module. See comments 33 & 38. A wraer Building Data the fuel use for the piping loss should only appear for the particular building(s) being analyzed under that concept. OILS: Where is worksheet for Concept #5? Jy27. ge ales. Appendix A, Building Heating Summary Calculations - Qualify where the value of 96,000 BTU/Gal for fuel oil comes from. Note that this comment applies to both versions of the calculations. Appendix A, Building Heating Summary Calculations - If the Caterpillar D3412 in position 4 is running at 1,800 RPM as indicated in Table III-A the combustion air should be 1,470 CFM not 1,020 CFM as indicated. Revise as required. Note that this comment applies to both versions of the calculations. Provide color photographs in the final report. MTVLBGMI | @ NOORVIK WASTE HEAT RECOVERY ESTIMATION PAGE 1 CONCEPT 5 WASTE HEAT UTILIZATION SIMULATION WORK SHEET. Location: NOORVIK Date: December 14, 1989 Heat rate: 2466 Btu/kwh produced System loss: 54,866 Btu/hour (approx. 38 BTU/FT arctic pipe) Total generation: 1,882,466 kwh/year ANNUAL, Local degree days: 1784 1846 2689 1418 944 663 263 356 811 1854 «1787 2894 15,849 Power plant monthly generation: Assumed diurnal heat demand variation: JAN FEB MAR DPR MAY JUN JUL AUG SEP oct NOV DEC CHECKSUM Fraction:8.6813 6.6916 6.6923 6.6683 6.8865 6.2646 6.6646 6.6728 6.6656 6.6946 6.8983 6.1864 1 Winter Summer Hour Kwh: 88866 99288 168886 95608 87286 7hE68 78808 78866 76466 162466 166466 115286 1,282,400 Diurnal 6.6494 6.6494 1 variation 6.638 6.638 6.656 6.638 6.645 6.645 6.645 6.645 6.845 6.845 6.838 6.838 6.6477 6.6477 2 6.636 6.856 6.636 8.656 6.646 6.648 6.048 6.646 6.648 6.648 6.636 6.836 6.6466 6.6466 3 6.634 6.634 6.634 6.834 6.636 6.836 6.636 6.836 6.636 6.836 6.634 6.834 6.8445 6.6445 4 6.634 6.8654 6.634 6.634 6.635 6.635 6.635 6.635 6.835 6.635 6.634 6.834 6.6428 6.8428 5 6.633 6.653 6.653 6.853 6.635 6.635 6.635 6.635 6.835 6.635 6.633 8.833 6.6414 6.8414 6 6.634 6.634 6.634 6.634 6.638 6.638 6.838 6.638 6.638 6.638 6.634 6.634 6.6461 6.6461 7 6.638 6.658 6.658 6.658 6.838 6.838 6.658 6.638 6.638 6.838 6.638 6.638 6.6598 6.8396 8 6.042 6.042 6.642 6.642 6.646 6.846 6.646 6.048 6.048 6.048 6.642 6.642 6.6361 6.6381 9 6.642 6.842 6.642 6.642 6.845 6.845 6.845 6.845 6.645 6.645 6.842 6.842 i 6.8374 6.6374 16 6.647 6.847 6.647 6.847 6.647 6.647 6.647 6.647 6.847 6.847 6.847 6.847 ( 8.6578 6.65768 " 6.648 6.648 6.648 6.648 6.648 6.046 6.840 6.846 6.640 6.846 6.648 6.648 } 6.6367 6.6367 12 6.647 6.647 6.647 6.647 6.648 6.648 6.648 6.048 6.849 6.648 6.647 6.847 6.8367 6.8367 13 6.845 6.645 6.645 6.645 6.656 6.656 6.856 6.658 6.856 6.658 6.845 6.645 6.6576 6.6376 14 6.647 6.847 6.647 6.647 6.852 6.852 6.652 6.852 6.852 6.652 6.647 6.647 ? 8.6374 «68.6374 15 6.648 6.648 6.648 6.648 6.656 6.658 6.856 6.858 6.856 6.856 6.648 6.648 f 6.6381 6.6381 16 6.648 6.048 6.648 6.648 6.656 6.656 6.856 6.858 6.658 6.656 6.648 6.648 { 6.0598 6.8598 17 6.649 6.849 6.649 6.849 6.645 6.845 6.845 6.645 6.845 6.845 6.649 6.649 t \ 6.6461 6.6461 18 6.046 6.046 6.846 6.646 6.647 6.647 6.847 6.847 6.647 6.647 6.646 6.646 } 6.0414 6.8414 19 6.643 6.8043 6.643 6.645 6.656 6.856 6.056 8.058 6.656 6.656 6.643 6.643 6.6428 6.8428 26 6.658 6.658 6.658 6.638 6.645 6.845 8.845 6.645 6.645 6.645 6.638 6.638 6.6443 6.8443 a 6.638 6.658 6.638 6.658 6.641 6.841 6.641 6.841 6.841 6.841 6.658 6.638 6.6466 6.8466 22 6.641 6.641 6.641 6.641 6.641 6.641 6.641 6.841 6.641 6.641 6.641 6.641 6.6477 6.6477 23 6.045 6.645 6.645 6.645 6.641 6.641 6.841 6.641 6.641 6.641 6.645 6.645 24 6.046 6.046 6.646 6.646 6.645 6.843 6.643 6.843 6.843 6.645 6.646 6.646 Building use per month, gallons of fuel oi] BUILDING 1, HIGH SCHOOL 3918 24311288 = 26281739 6 6 6 2858 3125 3563 4846 25,588 BUILDING 2, COMMUNITY BUILDING 963 934 «1857 18 478 365 133 168 416 533 964 = 1866 7,615 BUILDING 3, TREATMENT BUILDING 1719 1779-2813 1366 916 581 23 345 781 «1816 «1722S 2818 14,581 i BUILDING 4 6 6 6 6 6 6 6 6 6 6 6 6 8 BUILDING 5 6 6 6 6 6 6 6 6 6 6 6 6 8 BUILDING 6 6 6 6 6 6 6 6 6 6 6 6 6 8 polarconsult alaska, inc. r ) ® February 5, 1992 District Heat Report Pilot Station Waste Heat Recovery 3. Allreports assumed that three trips would be made to each village by a skilled crew each year, to perform routine maintenance. 5. | Cummins KTA1150 in position 2 is 1200 rpm, not 1800 rpm as indicated in Table I-A. 1200 rpm used in all calculations. (See Appendix A.) 7. As the use of engines is entirely up to the local operator, it is difficult to determine which single, or which combination of engines will be running at any one time. It was assumed that the most efficient engine, the Cummins KTA 1150 in position 2, would be running continuously. 8. Preliminary analysis has shown that circulation in the piping system can be accommodated by the engine pumps. If during final design we find that engine pumps are marginal, then small booster pumps would be employed. 11. Gallons of fuel consumed were rounded to the nearest 10 gallons in the text of the report. 13.A We could not locate an as-built of the sewer collection system in Pilot Station. 13.B 15. 16. 19. 20. The sewer is a gravity system that drains from the School, North across the State road ROW into a lagoon. There is a fuel fill line from the beach. The beginning portion of this line is shown in the figure. The exact alignment is not known past the location shown, although it can be assumed that the line crosses the proposed pipeline from the new power plant. There are 24,698 gallons available. Available heat to users should be as indicated in the waste heat utilization summary. Values listed in the text are 39 gallons high. Air changes for the building add up to 12 as shown in the building heating summaries, and listed in Appendix A, page 1. Annual fuel usage was distributed on a monthly basis using heating degree days. A base of 125 gallons per month was used to flatten the curve and make it conform to the monthly fuel usage indicated by the operator, and common to other buried water distribution systems in rural Alaska. The water is heated to keep the water lines from freezing. 21.A Fluid used in the user building hyd: nic heating systems vary, and would not be 22.B changed by the connection to the district heating system. Heat exchangers are provided between district heat system and building hydronic systems. Waste heat utilization simulation worksheet indicates 21,897 btu/hr heat loss in the pipeline. This is close to the calculated 21,900 btu/hr listed in the letter. Alaska Energy Authority A Public Corporation May 16, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Pilot Station Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. Page i, Executive Summary, 4th Paragraph - capitalize "C" in "concept #1." 2. Table of Contents: A. List of Figures - Tables and glossary page numbers don't correlate with actual page numbers. Coordinate. B. Section III. D. is on page 7, not 8 C. Section IV. A-1 through 3 are on page 10, not 9. Section IV. A. 4 is on page 11, not 10 D. Section VIII. C. - capitalize H in heating. 3. Page ii, Executive Summary, paragraph 4 - "Routine Maintenance.... three trips..... each year." Replace "three" with "two." 4. Page ii, Executive Summary, paragraph 6 - replace "Northwest" with "Western." 5. Page 5, Section III, Power Plant=Is KTA 1150 1800 rpm or 1200 rpm? Please verify correct data in table. 6. Section III C, paragraph 1 - Figure III-1 does not show what is stated. CO PO.BoxAM Juneau, Alaska 99811 (907) 465-3575 oo P pees 139869 704 East Tudor Road _~. Anchorage, Alaska 99519-0869 (907) 561-7877 Mr. Earle Ausman May 16, 1991 @ @ Page 2 7. Section III C, paragraph 2 - Please specify which engine is assumed to be operating. Rather than "an operating engine." 8. Section III-D, Figure V-3, page 18 - Can engine circulating pumps handle piping losses without a booster pump (see note one on drawing.) 9. Figure III-2 is not called out in Section III. 10. Section IV A.2 - "See Figure IV-1", not "V-1." 11. Section IV A.3 - Number of gallons doesn't agree with Table IV-A. 12. Section IV B.2 - Who owns the unsubdivided tract. 13. Figure V-1: A. Is there a sewer line at the high school? If so, where. B. How are the high school fuel tanks filled? Is there a fuel fill line or transfer line. If so, indicate on drawing. 14. Page 24, last paragraph - replace "engine" with "primary." 15. Section IX, page 42, first paragraph - According to table IX-A there is less than 24,700 gallons available. 16. Table IX A - Heat available to engines does not agree with waste heat utilization worksheet. Coordinate. 17. Section IX, page 44, paragraph 1 - Only "two" concepts summarized, not "three." 18. Section X - capitalize "W" in western. 19. Appendix A, page 1, Power Plant Heat - Total air changes should be 14, rather than 12. 20. Appendix A, page 1, User's Monthly Fuel Oil Usage - Explain the purpose of "125" in the water treatment plant calculation. 21. Appendix A, Waste Heat Utilization Simulation Worksheets. A. Page 3 of 3 - please identify fluid used in the "User Building." 9102\JD0754(2) Mr. Earle Ausman May 16, 1991 6 Page 3 B. According to figure V-l1, page 16, the school is 530 feet away from the new power plant location. Therefore, the arctic piping run should be 2 X 530 = 1060 feet. At 20.66 BTU/HR/FT. the heat loss would be 21,900 BTU/HR, not 10,948. Coordinate. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, ‘Steven Staésel Rural Systems Engineer SS:jd 9102\JD0754(3) Date: To: From: Re: MEMORANDUM 10/09/90 Earle Ausman Polarconsult Alaska, Inc. Brian Gray Rural Systems Engineer Alaska Energy Authority Pilot Station Waste Heat Recovery Draft Report We have reviewed the Draft Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the pre-final submittal. ole 3 oe * 5. ot Executive Summary paragraph 1 - Pilot Station is not OL located in northwest Alaska but rather @Westerm3laska. Executive Summary paragraph 3 - Add a sentence explaining the concepts that were investigated. Executive Summary paragraph 4 - Revise to say "Project cost ... for ncept #1 are as follows". nsT CAP 's Table of Contents - Correct format on I-E. List of Figures - Correct format on IV-4. Section I-D - See comment #1. Section I-E, paragraph 2 - Correct spelling of = "community’s". ke 4 Is the current plan to relocate the existing structure, th Bie or to build a new powerhouse? If a new building is Ye : planned will it have a similar arrangement to the 7 ayn" existing powerhouse? Clarify. \ YO Section III-A - The waste heat utilization simulation worksheets use the Cummins generator for determination of the heat available. Is the Cummins in position #2 scheduled to be used as the lead generator? If not revise calculations to reflect the actual model used as the lead generator. 10.,-Section III-c, paragraph 2 - A statement should be added which clearly identifies which combination of — /heat loss figures was used in the waste heat OK utilization simulation worksheets. Also, change "engine block" to "engine blocks" since more than one - AIC standby engine requires heat. 11. Section III-D, paragraph 1 - This paragraph should Ot mention removal of the skid mounted radiators as proposed in Figure V-3. See comment #24. 12. Section III-D, paragraph 1 - Will one of the remote OW radiators be adequate to meet the heat rejection requirements of any one of the three generators. 13. Section III-D, third paragraph on page 11 - Report Ale should clarify that the electrical systems for the new heat exchanger module only will be connected into a new panel at this location. We assume that the devices located at the user facilities would be connected into the electrical service for that particular building. 14. Section IV, General Comments: A. The Executive Summary states that the two school complexes, the water treatment plant, and the City buildings were studied and yet the report only addresses the high school and the water treatment plant. A section IV-C should be added that \a: *V describes other potential district heating users A" \U on investigated and provides some explanation of why 0 : they are not included in the various concepts. \attgy B. According to Figure V-1 the Clinic and the Fire Nv Station appear to be closer to the high school ~ than the water treatment plant. Were these buildings studied as potential users and if not why? 15. Section IV-1 - The Executive Summary mentions two school complexes. Clarify which buildings comprise the Oe two complexes. The report should also state here that under Concept #1 only the high school building would receive waste heat. 16. Section IV-A-2 - Section I-C-2 mentions soils information as part of the field data gathered yet the report makes no mention of local soils conditions. Are V local soils compatible with burying hot distribution / rae piping? Also, the report should indicate any possible if 4/4 _| buried utilities along the proposed route of the _-— heating piping. eo 17. Section IV-A-3 - Is domestic water heated off the O boilers at the high school only or at other school facilities? clarify. 18. Section IV-A-4 - Address whether the existing high (Ve school heating system circulating pumps are likely to be able to accommodate the additional head imposed by the heat exchanger. Q 19. Section IV-B-2 - Clarify which unsubdivided tract is N being referred to and who the owner is. Also, see — comment #16. 20. Section IV-B-4 - The field notes mention a furnace in the water treatment plant. What is the furnace used OL © tor and how will its operation be affected by the waste heat system? Also, the issue of available head on the circulating pumps needs to be addressed. 21. Section IV-B-4, paragraph #2 - This paragraph should reference the water treatment plant, not the high Or school. Also, a similar statement should be added to Section IV-A-4. 22. Figure V-1: Q A. Will the line from the new AVEC location to the é high school be 2-1/2" diameter under both Concepts 1 & 2? olc®: Identify the lines shown near the existing AVEC site and the elementary school. The linetype is not indicated in the legend. ac: Change label of "pumphouse" to "water treatment plant" to be consistent with the rest of the report. 23. Figure V-2 - Figure V-1 indicates 1-1/2" diameter lines between the high school and the water treatment plant Oe while Figure V-2 shows 2". Coordinate. 24. Figure V-3 - Was removal of the skid mounted radiators pute from units #1 & #3 discussed with anyone from AVEC. 51D pu~ Also, is it likely that the pumps on these engines will pry? have sufficient head to circulate through the manifold > 4 “piping, valves, and remote radiators as proposed? i) , 9 These questions should be addressed in Section III-D. - o7 CA 2 indica v-4 - Correct the spel is vv yd | SPM, head, and motor horsepower) ~ \ indicate the estimated @PE \l indicates 2" 0 for the pumps. Also, the legend piping on the supply side while Figures V-1 & V-2 4jorl”\ J ndicate 2-1/2". Coordinate. ov Av 26. oe Figure V-5 - Correct the spelling-ef "Grundfos" and indicate the estimated GPM, head, and motor No ower (fh for the pumps. _ pr a \ —— se 27 Section VI-B-1-b-5 - Add "primary" prior to "heat D\ “exchanger" and add "pumps," er "piping,". Also, yreplace "Engine" with "Primary" in the first line of ne the fifth paragraph on page 24. vp) ja 728 Section VI-B-2-a - See comment #16. 77! Dw \- | ‘29 Section VIII-D - The first sentence refers to three concepts while Table VIII-A only shows two. i“ ¢ dinat ¥ D oordinate. Y Po Section X - See comment #1. ok 31 Appendix A, Page 1, Power Plant Heat - There is no fo indication on the Building Heating Summaries that an additional 2 ACPH has been added. Coordinate. Appendix A, Page 1, User’s Monthly Fuel Usage - Provide an explanation in this section for the constant 125 gallon monthly fuel consumption. \ / 33. Appendix A, Waste Heat Utilization Simulation NU Worksheets - The following comments apply to the worksheets for all three concepts: A. Confirm that the generator being used for heat q 4 availability data is indeed the intended lead unit. See comment #9. 4 B. Revise units under generator data to NL = " (BTU/HR) /(KW)" not KWH as indicated. Cc. If the multi-purpose, elementary school, and village corporation buildings were not analyzed De they should not be listed on the worksheet. D. Hourly heat demand variation appears to be incorrect. Heat demand should decrease during the Ll 4 daytime due to higher outside air temperatures and a increased internal heat gains. We have attached / an example heat demand variation that you may wish ah / to use. Revise calculations as required. E. Page 3 indicates that the user building hydronic systems utilize water, not glycol. Is this true for both buildings? F. The Variable Losses indicates a plant heating load of 1,167 Btu/hr/F while the Building Heating 7 Summary for the Cummins generator running with / insulation in the floor gives a value of 1,444 red oii . Coordinate. Appendix A, Waste Heat Utilization Simulation Worksheet, Concept #1, Page 1 - Under Building Data the fuel use for the piping to the water treatment plant should not appear in Concept #1. Also, the value listed for the high school piping appears to be Oe Table IX-A lists the combined piping losses for the high school and water treatment plant as 4,807 pe gallons of fuel. Coordinate. Appendix A, Waste Heat Utilization Simulation Worksheet, Concept #2, Page 1 - Under Building Data the fuel use listed for the high school piping appears to be incorrect. Table IX-A lists the combined piping | losses for the high school and water treatment plant as 0 4,807 gallons of fuel. Coordinate. 36. Appendix A, Waste Heat Utilization Simulation Worksheet, Concept #3, Page 1 - Concept #3 is not even mentioned anywhere in the report. If this concept is a possible alternative (i.e. if the powerhouse may actually remain in its present location for some time) Bee then it should be addressed in the study. Otherwise delete the worksheet for this concept. Also, the value listed for the high school piping fuel use under Building Data appears to be incorrect. Coordinate. 37. Appendix A, Building Heating Summary Calculations - The following comments apply to all three versions of the calculations: A. Qualify where the value of 96,000 BTU/Gal for fuel ot L oil comes fron. yo - B+ list the units for Bldg. Heat, Heat to Ambient, etc. \ yy 38. Field Notes, item #6 - Paragraph #1 mentions a domestic hot water heater at the high school while paragraph #4 0 yfand Section IV-3 state that domestic water is heated by the boilers. Coordinate. Ol 39: Provide color photographs in the final report. PSTABGM1 NOORVIK WASTE HEAT RECOVERY cin PAGE 1 concE? WASTE HEAT UTILIZATION SIMULATION WORK SHEET. suscsecncscesssuscsecscssserusscocecssnes: 22 Location: NOORVIK Date: December 14, 1989 Heat rate: 2466 Btu/kwh produced Systea loss: 54,668 Btu/hour (approx. 38 BTU/FT arctic pipe) Total generation: 1,682,468 kwh/year ANNUAL Local degree days: 1784 1846 2869 1418 944683 263356 ats 1854 1787-2894 15,849 Assumed diurnal heat Power plant sonthly generation: demand variation: JM rea MAR APR may JUN JUL OA SEP ocT NOV DEC CHECKSUM Fraction:8.6813 6.8916 8.8923 6.0883 6.6885 6.6646 6.8646 8.8729 6.6658 6.6946 8.8983 6.1864 ! Kuh: 80808 99286 188888 95666 87286 76666 76606 72888 78486 162408 166486 115286 1,682,408 Diurnal Winter Sumer Hour 6.8494 6.8494 1 variation 6.638 6.638 6.638 6.938 6.645 6.045 6.645 6.645 6.845 8.845 6.838 8.838 6.6477 8.6477 2 8.836 6.636 6.836 6.636 8.849 6.648 6.648 8.848 6.648 6.848 6.636 6.836 6.8468 «6.8468 3 8.834 6.834 6.834 6.834 6.836 6.656 6.636 6.836 8.836 8.836 6.634 8.834 6.8445 6.8443 4 6.634 6.934 6.634 6.634 8.835 §.655 8.655 6.855 6.835 6.835 6.834 8.834 6.6428 8.8428 5 6.653 6.833 6.833 6.953 8.655 6.655 6.655 6.635 6.955 6.935 6.633 8.833 6.6414 6.8414 6 6.034 6.834 6.834 6.634 6.538 6.658 6.638 6.638 6.838 8.638 6.834 6.634 6.64681 6.8461 7 6.658 6.638 6.638 6.638 6.838 6.638 6.638 6.638 6.638 6.838 6.638 6.638 6.6598 6.8398 8 6.042 6.042 6.642 6.042 8.849 9.0466 6.6468 6.048 6.649 6.849 6.842 6.842 6.6381 6.8381 9 6.42 6.042 6.042 6.042 8.045 6.65 6.645 6.045 8.045 8.045 6.842 6.842 6.8374 6.8374 af 6.047 6.047 6.847 6.947 6.847 6.047 6.647 6.047 6.947 8.847 6.847 6.647 8.6578 6.8578 W 6.68 6.0468 6.048 6.048 8.848 6.048 6.648 6.869 0.648 8.848 6.048 6.648 6.8367 8.8367 12 6.647 6.647 6.947 6.947 6.848 6.048 6.648 6.849 6.648 6.649 6.647 6.647 6.8367 8.8367 13 8.45 6.045 6.845 6.945 5.958 $9,056 6.058 6.956 6.958 6.958 6.645 6.645 6.6578 6.8378 14 9.047 6.047 6.847 6.647 6.952 6.052 6.052 6.052 6.952 8.952 6.8647 6.847 6.8374 8.8374 15 6.68 6.648 6.048 06.048 8.958 6.058 6.956 6.056 6.956 6.958 6.848 6.848 6.8581 6.6381 16 6.048 6.648 6.848 6.648 9.058 6.058 6.658 6.0568 6.658 6.958 6.648 6.648 6.6398 6.8398 17 6.049 6.049 6.649 6.949 5.045 6.05 6.645 0.845 8.645 8.645 6.049 6.849 6.6461 6.8481 18 6.046 6.0466 6.846 8.646 9.647 0.047 6.047 6.847 6.847 6.647 9.846 6.646 6.6414 6.8414 19 9.043 6.643 6.943 6.545 6.058 6.656 6.056 6.956 6.056 6.058 6.843 8.843 6.6428 6.8428 a $.058 6.938 6.958 6.958 6.045 6.645 6.645 6.845 8.645 6.045 6.638 6.638 6.0443 6.8443 2 6.058 6.638 6.938 6.958 9.841 6.041 6.641 6.841 6.941 8.841 6.638 6.638 6.6468 6.8468 22 6.061 6.041 6.961 6.641 6.041 6.041 6.941 8.061 6.041 6.641 6.641 6.641 6.6477 8.8477 3 6.65 6.045 0.645 6.645 8.841 6.041 6.041 6.641 6.041 9.841 6.845 6.645 6.6494 8.8494 ray 6.0646 6.046 6.08 0.548 6.043 6.043 6.843 8.843 0.643 6.043 6.648 6.648 Building use per sonth, @llons of fuel oi] BUILDING 1, HIGH SCHOOL 3918-431 128826281739 § 8 © 2858 3125 3563 4046 25,588 BUILDING 2, COMMUNITY BUILDING 934 1057) 718478 as 133 1418 S33 metre 7,615 BUILDING 3, TREATMENT BUILDING 1719 1779) 2131366918 sa Bs 4S 7811816 1722s tg 14,581 BUILDING 4 § 6 6 6 s 6 a 6 6 8 6 6 8 BUILDING 5 5 6 6 8 4 s 6 6 6 6 8 6 6 BUILDING 6 8 6 s 6 6 ‘ 6 8 8 6 6 6 a polarconsult alaska, inc. February 5, 1992 @ @ District Heat Report mon B: Hi Vi 8. Engine manufacturer's specification data is listed in Table III-A. Waste heat 10. 13.A. 13.B. 15. 16.1. 17. utilization simulation work sheets used more detailed heat rejection information at various loads, supplied by the engine manufacturer's. Data sheet indicates water flow for 3306 at 35 gpm. The LTA 10 was assumed to be running continuously, which requires 249 gallons of heating oil, or 1,167 Btu/Hr/oF to keep the building warm, which was used in the WHU spreadsheet. Page 10, Section IV.A.2, length of pipeline from power plant to the elementary school should be 940 feet, not 660 feet as indicated. Figure V-1 on page 18 should read 720' of 2.5" diameter not 600' of 2.5" diameter as indicated. The fuel line runs from the School bulk fuel facility, behind the Teacher Housing, parallel to the district heating line to the Elementary School. It continues down the hill parallel to the existing sewer line and power line and across Front Street. Spur lines run to the AVEC power plant site, and the Water Treatment bulk fuel facility. The district heating line crosses the fuel line in two spots, both on Hillside Drive. A spur line to the Armory crosses the district heating line to the Elementary School. The main line crosses the district heating line to the Water Treatment Plant. Length of 2.5" diameter pipeline should read 720', not 600' as shown. Transmission pipe will be mostly 2 1/2" diameter, not 3" as indicated on page 31. The pipe will run 85 feet to the tee to the City Hall, continue an additional 100 feet to the Tee to the Clinic, an additional 95 feet to the tee to the Headstart building, and an additional 440 feet to the tee to the Elementary School. The pipe runs 220 feet from this point to the Elementary School, or 130 feet to the Water Treatment Plant. Cost for City Hall includes district heat piping from Power Plant to the City Hall. Cost for Clinic includes district heat piping from City Hall to Clinic. Cost for Head Start includes district heat piping from Clinic to Headstart, as well as stub connection with two valves and pipe caps. Annual fuel usage was distributed on a monthly basis using heating degree days. A base of 354 gallons per month was used to flatten the curve and make it conform to the monthly fuel usage indicated by the operator, and common to other buried water distribution systems in rural Alaska. The water is heated to keep the water lines from freezii.... 00 x Op G oe Ba Alaska Energy Authority A Public Corporation May 20, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Scammon Bay Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. Executive Summary, Delete * after "$611,168*" in table on page i. Capitalize "C" in "concept #3." 2. Table of Contents, list of figures - Tables and glossary page numbers don't correspond to actual page numbers. Coordinate. 3. Table of Contents - Section IV.C.2-b and c are on page 17, not 16. 4. Table of Contents - Section X, Recommendations is missing (page 52) in copies. 3. List of figures: A. Figures IV-1 & 2, replace "Building" with "Plant" in "Water Treatment Building." B. Figure V-4 calls out Junior School schematic, but figure shows City Hall schematic. Coordinate. on Figure V-5 calls out High School schematic, but figure shows Head Start schematic. Coordinate. D. Figure V-6 calls out Elementary School, but figure shows Clinic schematic. Coordinate. © PO.BoxAM Juneau, Alaska 99811 (907) 465-3575 SQ PO. Box 190869 701 East Tudor Road — Anchorage, Alaska 99519-0869 (907) 561-7877 91Q2\JD0769(1) 20 Mr. Earle Ausman e@ @ May 20, 1991 Page 2 6. List of tables, add tables that show: Estimated Distribution of Fuel Oil Use at: 1. Clinic 2. Head Start 3. City Hall 7. Page 3, Part D - "Population of 350" does not correspond to "Population of 326" in paragraph 1, Executive Summary. Coordinate. 8. 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? 9. 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. 10. 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. 11. Table IV-B, page 14 - change "Building" to "Plant." 12. Section IV.C.2. A & C - call out figures V-4 and V-5 in corresponding paragraphs. 13. Section V, Concept Design Drawings A. figure V-1, see 10. Also, indicate where fuel lines are buried utilities tun. B. Figure V-2, see 10. 14. Page 29, last paragraph - replace "engine" with "primary." ata masrrany Mr. Earle Ausman 6 e@ 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, fol hal Steven Stasse Rural Systems Engineer SS:jd Q1NANTNN7Kh0/21 OL Noe i MEMORANDUM Date: 11/15/90 To: Earle Ausman Polarconsult Alaska, Inc. From: Brian Gray Rural Systems Engineer Alaska Energy Authority Re: Scammon Bay Waste Heat Recovery Draft Report We have reviewed the Draft Report and Concept Level Design for the above referenced project and have the following comments. Consider this your notice-to-proceed to pre-final design. Incorporate all relevant comments prior to obtaining cost estimates. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the pre-final submittal. Hs Executive Summary page 1, paragraph 1 - Revise to say that the cost of heating fuel varies between $1.15 to $1.75. 2. Executive Summary page 1, paragraph 3 - Provide an explanation of the concepts investigated either here or in the introduction. 3. Executive Summary page 1, paragraph 4 - Revise to say oes "Project cost ... for Concept #3 are as follows". 2k 4. Executive Summary page 2, paragraph 5 - Revise to say Western Alaska. Ct 5. Table of Contents - Capitalize "Heating" on VIII-B. ot 6. Section I-A, paragraph 1 - See comment #1. ae Section I-D, paragraph 1 - See comment #4. 8. Section III-A, paragraph 1 - A statement should be added indicating which generator was assumed as the lead unit for the purposes of the calculations. 9. Section III-B - The Program Notes in Appendix A indicate that the engine manufacturer’s test data was used not the engine specs listed in Table III-A. Coordinate. 10. 11. Ne 15. OL 16. Section III-C, paragraph 2 - A statement should be added which clearly identifies which combination of heat loss figures was used in the waste heat utilization simulation worksheets. Section III-D, paragraph 1: A. Will one of the remote radiators be adequate to meet the heat rejection requirements of any one of the three generators? B. Figure V-3 shows unit #3 (which is described as being not in use currently) connected to the heat recovery piping. Is removal of the skid-mounted : nt ot) radiator and connection of unit #@ included in the work at the power plant? 3 Section III-D, second paragraph on page 9 - Add "for the new heat exchanger module" after "district heating electrical systems." Section IV-A-1 - From Figure V-1 it appears that the high school could be connected to the power plant with an approximately equal length of piping as the elementary school. Was the high school considered as a potential waste user and if not why? Section IV-A-2: “A. Change "extended" to "extend." B. Section I-C-2 mentions soils information as part of the field data gathered yet the report makes no mention of local soils conditions. Are local soils compatible with burying hot distribution piping? Also, the report should indicate any possible buried utilities along the proposed route of the heating piping. Figure V-1: A. Provide a north arrow. B. Identify the proposed waste heat user buildings shown near the elementary school. Figure V-2 - Indicate where the various pipe sizes occur. @ @ e 17. Figure V-4: Ay Correct the spelling of "Grundfos" and indicate the estimated GPM, head, and motor horsepower for \ — the pumps. B. Section IV-C-2-a indicates that the building is heated by a pot-type heater and proposes AN 7 installation of a baseboard loop. Revise floor Vit : . U plan and schematic as required. OK 18. Figure V-5 & V-6 - Correct the spelling of «Seangtos" and indicate the estimated GPM, head, and mo yy horsepower for the pumps. " 19. Figure V-4: A. Correct the spelling of "Grundfos" and indicate c the estimated GPM, head, and motor horsepower for O\ the pumps. the equipment schedule indicates that it is not i The system schematic shows an expansion tank while 0 required. Coordinate. 20. Section VI-B-1-b-5 - Add "primary" prior to "heat exchanger" and add "pumps," after "piping,". Also, nee replace "Engine" with "Primary" in the first line of the fourth paragraph on page 29. 21 Figure IX-2 - Add months to the horizontal axis similar on to Figure IX-1. —— 22. Section X - See comment #4. eet re _’23. Appendix A, Page 1, Power Plant Heat - There is no eee indication on the Building Heating Summaries that an Dv additional 2 ACPH has been added. Also, it does not \ appear that the infiltration value used in the worksheets is even close to 24 ACPH. Revise as required. 24. Appendix A, Page 1, User’s Monthly Fuel Oil Usage - In ow the Water Treatment Building calculation change "125" to "354." 25. Appendix A, Program Notes - The reference here should (AC be to Table III-A, not Table III-B. 26. NY Appendix A, Waste Heat Utilization Simulation Worksheets - The following comments apply to the worksheets for all concepts: A. Revise units under generator data to " (BTU/HR) /(KW)" not KWH as indicated. B. Hourly heat demand variation appears to be incorrect. Per our telephone conversation of 10/26/90 we will need to see an example calculation which clearly demonstrates that the es ! V revised heat demand does not significantly affect the amount of heating fuel displaced. Otherwise, the heat demand values will need to be revised in accordance with the values transmitted previously. we C. Under Building Data the fuel use for the piping 27. va OU?8- loss should only appear for the particular building(s) being analyzed under that concept. It appears that addition of the three city buildings only amounts to an additional 659 equivalent gallons of fuel oil delivered. Upon formulation of cost estimates concepts 2, 3, and 7 should be closely evaluated to determine which is the most cost effective option. The additional piping required for concept #3 may not be economically justifiable. Provide color photographs in the final report. SCAMBGMI1 polarconsult alaska, inc. @ e@ February 5, 1992 District Heat Report Nunapitchuk Waste Heat Recovery 1. The district heating pipe will be buried and will come up through the floor in the mechanical room of the High School Building. User equipment will be located next to the furnaces in the mechanical room and will connect to a heating coil installed in the return air duct of the two furnaces. (See Figure IV-4.) 2.A. Cooling system is designed so that all the engines run through the primary heat exchanger, then to any of the three remote radiators for additional cooling if required. The amot valves are installed in a "mixing" mode. If return water from the heat exchanger is still too hot, the amot will open and allow coolant to flow to the radiators. A small hole would be required to be drilled in the amot valve to allow for a small amount of water to circulate through the radiators to alleviate cold shocking. Supply and return piping between the SMI module and the WH module, and the Butler Building cross over. Direction arrows are correct. 2.B. One engine has an existing skid mounted radiator which would be removed, and the engine connected to the common cooling system as shown in Figure V-3. 3. The distribution piping in Figure V-1 and V-2 is 2-1/2" diameter as shown. The supply piping in Figure V-4 and V-5 is 1-1/2" as shown. The piping necks down from 2 1/2" down to 1 1/2" at the building. The supply piping in Figure V-6 should be 2-1/2", not 3" as shown. Larger diameter distribution piping is used to keep the pipe head losses down, which in turn keeps the pump sizes and annual operation cost down. 4. Transmission pipe ranges from 2 1/2" diameter to 1 1/2" diameter, not 4" to 1" as indicated on page 41. State of Alaska Walter J. Hickel, Governor Alaska Energy Authority A Public Corporation January 24, 1992 Mr. Earl Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Nunapitchuk and Tununak Waste Heat Recovery Pre-Final Reports Dear Mr. Ausman: Per our letter of understanding dated June 12, 1991, please provide responses to the following questions regarding the Nunapitchuk Waste Heat Report. Also, please rovide the assumed GPM and head-loss data for all circulating pumps for both the unapitchuk and Tununak reports. There are no questions or comments on the Tununak report. I look forward to receiving this information, and the corresponding information outlined in our letter of understanding for the other four reports, at your earliest convenience so that we may finalize the reports and process any outstanding invoices. Nunapitchuk Waste Heat Section 4.A.4 Include information on connection of the waste heat system to the high school heating system. Figure V-3 A. Please ee intended operation of ae connection between Butler Building, SMI module, and Module. Some of the flow arrows appear reversed and the amot valve at the butler building is short circuited. Are the amot valves installed in a "mixing" or "bypass" mode? B. Note three, indicates a "skid mounted" radiator. Is this correct? Figure V-2,4,5,6 | V-2 shows 2.5" pipe to the elementary school, high school, and generator building. This does not agree with figure's V-4, 5 & 6 supply side piping. Please explain. Section VI, B.2.a (page 41) (Page 44) Please correlate Arctic pipe diameters with piping runs to high school, elementary school and generator building. Sincerely, Remote Systems Engineer II SS:jd O PO. Box 110809 Juneau, Alaska 99811-0809 (907) 465-3575 PO. Box 190869 704 East Tudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 92Q1\JD2351(1) State of Alaska Walter J. Hickel, Governor Alaska Energy Authority A Public Corporation January 24, 1992 Mr. Earl Ausman West 33rd Avenue Anchorage, Alaska 99503 Subject: Nunapitchuk and Tununak Waste Heat Recovery Pre-Final Reports Dear Mr. Ausman: Per our letter of understanding dated June 12, 1991, please provide responses to the following questions regarding the Nunapitchuk Waste Heat Report. Also, please rovide the assumed GPM and head-loss data for all circulating pumps for both the unapitchuk and Tununak reports. There are no questions or comments on the Tununak report. I look forward to receiving this information, and the corresponding information outlined in our letter of understanding for the other four reports, at your earliest convenience so that we may finalize the reports and process any outstanding invoices. Nunapitchuk Waste Heat Section 4.A.4 Include information on connection of the waste heat system to the high school heating system. Figure V-3. A. Please explain intended operation of cooling system connection between Butler Building, SMI module, and WH Module. Some of the flow arrows appear reversed and the amot valve at the butler building is short circuited. Are the amot valves installed in a "mixing" or "bypass" mode? B. Note three, indicates a "skid mounted" radiator. Is this correct? Figure V-2,4,5,6 | V-2 shows 2.5" pipe to the elementary school, high school, and generator building. This does not agree with figure's V-4, 5 & 6 supply side piping. Please explain. Section VI, B.2.a (page 41) Please correlate Arctic pipe diameters with piping runs to high school, elementary school and generator building. Sincerely, Steve Stassel Remote Systems Engineer II SS:jd PO. Box 110809 Juneau, Alaska 99811-0809 (907) 465-3575 PO. Box 190869 701 EastTudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 92Q1\JD2351(1) Alaska Energy Authority A Public Corporation June 12, 1991 Mike Dahl Polarconsult Alaska, Inc. 1503 West 33rd Avenue, Suite 310 Anchorage, Alaska 99503 SUBJECT: District Heating Report and Concept Level Design Studies for Mountain Village, Noatak, Pilot Station, and Scammon Bay. Dear Mr. Dahl: Thank you for taking the time to meet with me and Steve Stassel Wednesday, June 11th to discuss the above referenced projects. I would like to confirm our understanding of our discussion regarding the preferred method for closing out these projects: 1) PCA was directed by the Energy Authority to use a "canned" approach in the design of the heat recovery systems including the design parameters for the AVEC cooling system (including multiple remote radiators, removal of skid mounted radiators, etc.) and the location of the circulating pumps at the end-user buildings. This contributed to the total cost of the proposed heat recovery systems. 2) PCA is agreeable to incorporating “draft" review comments that were omitted from the “pre-final” reports, as well as any new errors that were inadvertently included in the "pre-final" reports, at no additional cost to the Energy Authority. 3) PCA requires reimbursement for services provided to incorporate any new "pre-final" review comments that were not included in the "draft" review comments. 4) A compromise was reached between PCA and AEA that PCA will respond to the technical related questions in the "pre-final" PO. Box AM Juneau. Alaska 99811 (907) 465-3575 PO. m Box 190869 704 East Tudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 review comments for the above projects, as well as to any "pre- final" review comments for Nunapitchuk and Tununak, in letter format. In addition, PCA will provide the assumed GPM and head-loss data for all circulating pumps referenced in the Reports. This information will be provided at no additional cost to the Energy Authority. These responses will not be incorporated into the "final" report. In return for fulfilling the requirements of #4 above, PCA will not be required to make any alterations to any of the Reports. In return, AEA will accept the Reports as Final, with the condition that AEA will not be responsible for any typographical errors or technical deficiencies in the reports. Please find enclosed a copy of the acceptance notice to be included with each copy of the reports. If you have any questions, please call me or Steven Stassel at 561- 7877. Sincerely, Sota Lo. Brian Gray Project Manager Ss/ enclosure cc: Steve Stassel, Alaska Energy Authority This study was prepared under contract with the Alaska Energy Authority by: Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 The accepted conclusions are: 1. A potential for waste heat recovery has been identified in the community of Mountain Village. 2. Based on the proposed design and project cost estimate, the project is not economically feasible and does not appear to justify conventional financing. Alternate funding sources and/or revisions to the project scope will need to be evaluated. 3. The designs presented herein are schematic in nature and should not be construed as being complete in design or function. A thorough review of content and correctness should be performed prior to use in the development of construction documents. The concept-level project cost estimate for Scenario #6 is $1,002,315. Accepted: Brian C. Gray Date Project Manager Accepted: Gary D. Smith Date Manager of Rural Projects State of Alaska DN Walter J. Hickel, Gov Alaska Energy Authority A Public Corporation May 23, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Mountain Village Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. 2. w Executive Summary, paragraph 4, capitalize "C" in Concept. Table of Contents, list of figures - Tables and glossary page numbers don't correspond to actual page numbers. Coordinate. Section IILA., paragraph 1 - "Module #4, 'contains", change to "consists." Section III.B. - indicate that position #1 D3412 at 1200 rpm is used as the lead generator in the WHU worksheet and indicate basis of assumption. Section III.B: A. Program notes in Appendix A indicate that "engine manufacture's test data" was used, not the data in Table III-A. Coordinate. B. Section III.C, page 9 - Appendix A worksheets assume position #1 is lead. Coordinate. Section IIL.D, page 10, paragraph 4, change "consist" to "consists." Table IV-A & IV-AA, page 13 & 14, the total fuel use for the new elementary, middle and high schools in table IV-A does not agree with table [V-AA or Appendix A, concept 6. Coordinate. Section IV.A.4. are the existing circulations pumps capable of accommodating the head imposed by the heat exchanger and piping? Figure V-1 - "Concept 1, 420 feet of 2" diameter pipe does not agree with Figure V-2 or appendix A, Concept 1 WHU model. Coordinate. PO. Box AM Juneau, Alaska 99811 (907) 465-3575 PO. Box 190869 704 EastTudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 9102D080171) Governor Mr. Earle Ausman @ @ May 23, 1991 ‘ Page 2 10. Figure V-2, direction of flow arrows are incorrect. 11. Figure V-3, errors in piping arrangement. 12. Figure V-4, equipment schedule indicates 2-1/2" piping. Coordinate with figures V-1 & 2 and appendix A, Concept 6 WHU model. 13. Figure V-5S, equipment schedule indicates 3" piping. Coordinate with Figures V-1 & 2 and appendix A, Concept 6 WHU model. 14. Figure V-7, equipment schedule indicates 2" piping. Coordinate with Figures V-1 & 2, and appendix A, Concept 6 WHU model. 15. Section IV.A.4: A. Add a description of the proposed waste heat tie-in to the "old" elementary school with figures. B. Page 16, in "see tigures V-5" change "tigures” to "figure." 16. Section IV.B.4, change "(see figure IV-6)" to "(see figures I[V-6 & V-7.)" 17. Section VI.B.1.b, page 32 - replace "Engine" with "Primary" in first line of paragraph 4. 18. Section VIII.B. - include description for Concept 1, "Old" Elementary School. 19. Section VIII.D - change paragraph to reflect both concepts 1 & 6. 20. Table VIILA. A. 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 the same for each scenario. The "General Conditions" should include any variance in; freight, per diem, travel, profit, etc. 21. Section IV.A. - change first paragraph to read, "There is approximately 64,755 gallons..." 22. Add months to X axis on Figure [X-2. 9102\JD0801(2) Mr. Earle Ausman May 23, 1991 @ @ ‘ Page 3 23. Appendix A: A. Power Plant Heat, according to the WHU worksheets, the D3412 at 1200 rpm is used as the basis of calculations. Please reflect this assumption in appendix A, paragraph 1 and section III, page 9. (see 5b.) B. Clarify where the value of 96,00 BTU/gallons for fuel oil is from. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, Ly eae ¢ even Stassel Rural Systems Engineer SS:jd 9102\JD0801(3) Walter J. Hicke! Alaska Energy Authority A Public Corporation May 23, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Noatak Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above reterenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. a Cover page - arrow on map shows location of Naotak, not Noatak. Noatak is located approximately 60 miles north of Kotzebue. Coordinate. 2. Executive Summary, page i - change "Project Cost for concept #1" in table to "Project Cost for Concept #2." Also, capitalize "C" in "concept #2" in last paragraph. 3. Executive Summary, page ii - paragraph 3, change "three" to "two", "trips to... each year." 4, Table of Contents: A. IV.B - Change "Building" to "Plant." B. IV.B.4 - Should be page 18, not 17. C. VID - Should be page 37, not 39. D. VIIA - Should be page 39, not 38. E. Appendix A - Include worksheet calculations. n List of Figures: A. Figure IV.6 - Change "Building" to "Plant" in both the figure on page 19 and List of Figures. B. Figure V-7 -"Same as above." 6. List of Tables: A. IV-B - Change "Building" to "Plant" on both page v and 18. © PO.BoxAM Juneau, Alaska 99811 (907) 465-3575 1 ORDO 190869 704 East Tudor Road Anchorage, Alaska 99519-0869 (907) 561-7877 Mr. Earle Ausman May 23, 1991 @ ®@ ‘ Page 2 7. Section I.C.3 - Figure 1 is on page 20, not 19. 8. Section I.E - Northwest Arctic "Borough" School District, add "Borough." 9. Section II, paragraph 1 - change "building" to "plant" in water treatment “building.” 10. Section II, paragraph 2 - add "Borough" to Northwest Arctic "Borough" School District. 11. Section IIIA - paragraph one contradicts itself. It says "Equipment... will be installed...." and then goes on to say "Position No. 1 now has... and positions No.4 & 5 now have....". Coordinate with table III-A. Also, replace "stand by unity" with "stand by unit.” 12. Table III-A - KTA 1150's are 1200 rpm. 13. Section III.C - last line, change "Figure IT]-2" to "II-3." 14. Section III.D - figure V-2 is on page 21. Figure V-3 is on page 22. 15. Section [V.A.3 - Fuel consumption in school buildings in paragraph 1 does not agree with table IV.A. Should paragraph one read: "20,000 gallons used by the high school and "Junior High School"? Coordinate. 16. Section IV.A.4 - clarify that the heating coil will be located in the "return" duct. 17. Figure V-2 - correct arrow directions on "new distribution piping." 18. Figure V-3: A. Engine and heat exchanger piping is crossing connected. B. Coolant piping bypasses radiators. Cc. KTA 1150 heat rejection to coolant is 560,000 BTU/HR. Why is the primary heat exchanger only 300,000 BTU/HR. D. The cooling system as shown can not function. Correct. 19. Figures V-5 through 7 - Figure V-1 indicates Arctic Piping is 3" diameter. Figures V-5 through 7 indicate Arctic Piping is 2" diameter. Coordinate. 20. Section VI, page 30 - last paragraph, replace "engine" with "primary" in first line. 21. Section VIII.A - paragraphs 1 and 2, figure V-3 is on page 22. 9102\JD0797(2) Mr. Earle Ausman May 23, 1991 @ ®@ A Page 3 22. Section VIII.B - paragraphs 1 and 2. Correct page numbers for figures V-4 through 7. Also, change "building" to "plant" in paragraph 2. 23. Section VIII.C - paragraph 1, change "three" to "two" "times per year." 24. Table VIII.A: A. 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 the same for each scenario. The "General Conditions" should include any variance in; freight, per diem, travel, profit, etc. 25. Appendix A: A. Waste heat worksheets and other calculations are missing. B. Module air changers with a KTA 1150 should be: 13 + 1 = 14 AC/HR, not 24. (This is based on a module size of 12'x 12'x 30' = 4320 feet? and 930 cfm = 55,800 ft3/hr. 55,800/4320 = 13 AC/HR.) Revise. 26. Appendix B: A. Number 2 - were discussions with "ADEC", or "PHS" or possibly "VSW"? B. Number 6 - most of second paragraph is missing. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, Be ff Store Steven Stassf1 Rural Systems Engineer SS:jd 9102\JD0797(3) Alaska Energy Authority A Public Corporation May 16, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Pilot Station Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. Page i, Executive Summary, 4th Paragraph - capitalize "C" in "concept #1." 2. Table of Contents: A. List of Figures - Tables and glossary page numbers don't correlate with actual page numbers. Coordinate. B. Section III. D. is on page 7, not 8 C. Section IV. A-1 through 3 are on page 10, not 9. Section IV. A. 4 is on page 11, not 10 D. Section VIII. C. - capitalize H in heating. 3. Page ii, Executive Summary, paragraph 4 - "Routine Maintenance.... three trips..... each year." Replace "three" with "two." 4. Page ii, Executive Summary, paragraph 6 - replace "Northwest" with "Western." 5. Page 5, Section III, Power Plant=Is KTA 1150 1800 rpm or 1200 rpm? Please verify correct data in table. 6. Section III C, paragraph 1 - Figure III-1 does not show what is stated. CO PO. Box AM Juneau, Alaska 99811 (907) 465-3575 704 t Th Road Anchorage, Alaska 99519-0869 (907) 561-7877 a oPBPMs 179869 04 East Tudor Roa nchorage, s (907) Mr. Earle Ausman May 16, 1991 @ 4 Page 2 7. Section III C, paragraph 2 - Please specify which engine is assumed to be operating. Rather than "an operating engine." 8. Section III-D, Figure V-3, page 18 - Can engine circulating pumps handle piping losses without a booster pump (see note one on drawing.) 9. Figure III-2 is not called out in Section III. 10. Section IV A.2 - "See Figure IV-1", not "V-1." 11. Section IV A.3 - Number of gallons doesn't agree with Table IV-A. 12. Section IV B.2 - Who owns the unsubdivided tract. 13. Figure V-1: A. Is there a sewer line at the high school? If so, where. B. How are the high school fuel tanks filled? Is there a fuel fill line or transfer line. If so, indicate on drawing. 14. Page 24, last paragraph - replace "engine" with "primary." 15. Section IX, page 42, first paragraph - According to table IX-A there is less than 24,700 gallons available. 16. Table IX A - Heat available to engines does not agree with waste heat utilization worksheet. Coordinate. 17. Section IX, page 44, paragraph 1 - Only "two" concepts summarized, not "three." 18. Section X - capitalize "W" in western. 19. Appendix A, page 1, Power Plant Heat - Total air changes should be 14, rather than 12. 20. Appendix A, page 1, User's Monthly Fuel Oil Usage - Explain the purpose of "125" in the water treatment plant calculation. 21. Appendix A, Waste Heat Utilization Simulation Worksheets. A. Page 3 of 3 - please identify fluid used in the "User Building." 9102\JD0754(2) Mr. Earle Ausman May 16, 1991 ® ‘ Page 3 B. According to figure V-1, page 16, the school is 530 feet away from the new power plant location. Therefore, the arctic piping run should be 2 X 530 = 1060 feet. At 20.66 BTU/HR/FT. the heat loss would be 21,900 BTU/HR, not 10,948. Coordinate. If you have any questions, please call me at 561-7877 or 261-7282. Sincerely, “Steven Stagsel Rural Systems Engineer SS:jd 9102\JD0754(3) Alaska Energy Authority A Public Corporation May 20, 1991 Mr. Earle Ausman Polarconsult Alaska, Inc. 1503 West 33rd Avenue Anchorage, Alaska 99503 Subject: Scammon Bay Waste Heat Recovery Pre-Final Report Dear Mr. Ausman: We have reviewed the Pre-Final Report and Concept Level Design for the above referenced project and have the following comments. Please provide written responses to all review comments indicating if comment was incorporated or providing an appropriate answer/explanation with the final submittal. 1. Executive Summary, Delete * after "$611,168*" in table on page i. Capitalize "C" in "concept #3." Table of Contents, list of figures - Tables and glossary page numbers don't correspond to actual page numbers. Coordinate. Table of Contents - Section IV.C.2-b and c are on page 17, not 16. Table of Contents - Section X, Recommendations is missing (page 52) in copies. List of figures: A. Figures IV-1 & 2, replace "Building" with "Plant" in "Water Treatment Building." B. Figure V-4 calls out Junior School schematic, but figure shows City Hall schematic. Coordinate. Cc. Figure V-5 calls out High School schematic, but figure shows Head Start schematic. Coordinate. D. Figure V-6 calls out Elementary School, but figure shows Clinic schematic. Coordinate. © PO.BoxAM Juneau, Alaska 99811 (907) 465-3575 3K PO. Box 190869 701 East Tudor Road ~=Anchorage, Alaska 99519-0869 (907) 561-7877 9102\JD0769(1) Mr. Earle Ausman May 20, 1991 ® Page 2 6. List of tables, add tables that show: Estimated Distribution of Fuel Oil Use at: 1. Clinic 2. Head Start 3. City Hall 7. Page 3, Part D - "Population of 350" does not correspond to "Population of 326" in paragraph 1, Executive Summary. Coordinate. 8. 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? 9. 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. 10. 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. 11. Table IV-B, page 14 - change "Building" to "Plant." 12. Section IV.C.2. A & C - call out figures V-4 and V-5 in corresponding paragraphs. 13. 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. 14. Page 29, last paragraph - replace "engine" with "primary." 9102\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, Bea! Show! Steven Stasse Rural Systems Engineer SS:jd 9102\JD0769(3) e Pelee Conse lT e Gy / /- Z/ be kepourts oy /‘€ Dawe Cick Abeer, / BLINN Ger, SS Ve cuss Prec Rotts: OD Re wAs menor p» make a Cred |@pprcach to a# desra yn AD Avéc Ae S sys7 BS) Bd-esee cree pemps s PP 1< “ ies q CM @ Trt hatly SOL b4S ar 2S yee fepast CO" Ss is ANALY) by e534 toa dart% 2 (3b/ Wwe Kee —s Vurep: Fel wy HH fe Can SQ = 876. Cae euwe. WF VIMagh precfirrl comomeAS piles alla to im zerpamts- mom stakes 4 Pree Aas TY, missed, pak w sd feo prcospryets need CON Ont Be, DiScessep AB Baya ways Cle nde out prsyjet t J wth fg Oto to nto 6/(2 (a e e Accesso Convcilesiics | 1 : i fe pat eee pe wre te Acar 1 reanany pro )_Ra.n } is Tifeed oT gre Sf tre 2, obo-$|| Care Corer IDLO i } | | i \} i e ’ i] Cx gpa FE eneaGyp Ath y ity goes no Treks I Js} LnWwS1 RIG Sor i \ eins | 3 Re spaet Ee | owe COM OMICS : OS vant Ban be’ i deree m eet, Lbs Za HER A a | i| Erovwy Ay thow ih e on pate I propa bas I i] | I} I ] | | I @6-Feb-9z FGOLARCONSULT ALASKA, INC. EN #268aU56 W/O ASSIGNED FROF ENGR SUPPORT OF RURAL FRI MUL.TI-DISCIPLINE ASFSAFABSROZHA $46uaad. - AMEND #1 70 ALD SOQ, Qua & ExT DATE FUNDS AMOUNT BALANCE W/O W/O # AVAILABLE DATE INVOICE # PAID W/G # BHLANCE 1 Seer. wl 09/15/88 S220. AE 1 6220. A Wz2/1S/B9 CANCELLED Q. Va 1 S228. AW A3/1A/B9 S220. OA 1 Q3/16/89 UNKNGWN* S220. AA Q. aa a. Aa 2 23204. AQ 11/38/88 235204. AK 2 @6/14/89 UNKNOWN* ZS2N4. UAV 2. a a. wa 3 6168. 82 24/87/89 6166. aa 3 @1/17/39@ = ZEAAAGE-3 8166. aa QW. Wa a. wa 4 6202. AA A7/AS/89 62a. aa 4 @39/13/89 281189 6222. A a. aa a. aa s COA. MA GB/Z1/89 268. aa S 26/11/83 @61169-5 226. VS 313.95 s @5/27/91 W/O CLOSED 513.95 a. aa @. Aa 6 FWA. AA 12/11/89 AMAA. VA 6 @2/21/9a @22198-1 17916. 9@ 2061.18 6 W6/25/9 “UNKNOWN” 1362. 33 698.77 6 @&/27/91 W/O CLOSED 698. 77 @. aa G. AA 7 1Q321.@@ 12/11/89 1@321. 82 7 @3/29/9@ @3A99@-WO#7 3@79. 72 7241.26 7 @5/01/92 W/O#7-G52190 4736.20 2505. @6 7 12/11/9a 7-@62198 25Q5. 26 @. aa @. Wa 8 1M235. 8 12/11/89 18235. Aa 8 @3/29/9Q A3AIGA-WOHS 2979. 72 7255. 28 & Q5/01/92 W/O#8-252192 4861. 67 2393.41 & @9/28/98 8-892998 5@6. 83 1886. 5 &* PENDING 22/03/92 POL@20392-A 1886.58 2. a2 @. aa 9 1@Z55. @@ 12/11/89 10255. @a 3 @3/289/98 A3AIIV-WO#D 7265. 14 2989. 66 9 @5/@1/9A W/O#9-@5e019a 1687. 89 13@1.97 9 26/21/94 9-@62190 13@1.97 B. 2a Q.a2a 1@ 1@364.@@ 12/11/89 18364. @@ 1a Q3/09/92 @32II@A-WOH19 7682. 14 2783. 66 1a Q@S5/@1/9@ W/O#1A-5A19a 14@@. 39 13@3. 47 1a Q6/21/92@ = 18-B6z192 1323. 47 @. AB a. ad 11 9648. @@ 12/11/89 9646. aa 11 Q3/29/9A A3IAI9V-WO#11 J 6251.16 41 @5/2@1/9@ W/0#11-Se1g9ea 2278.59 11 Q9/26/92 11-621 9MREV 1618. 76 11 @1/31/91 W/O 11/JAN91 a. au @. aa lg 9766.2 12/11/89 3766. aa le Q3/89/FA M3LISA-WOH1Z 3596. 84 6169.16 le Q5/21/32 W/O#12-5a19a 3672. 42 2516.76 12 @5/28/9@ 12-@6219AREV 967.83 1558. 93 le PENDING Q4/82/91 POLA4AzZ51 1558.93 Q. aa @. Wa 13 9888. @@ 12/11/89 9888. aa 13 Q3/29/9A A3ZAIIA-WO#H 13 3546. 64 6341.16 13 Q@5/@1/9@ w/0#13-Se19a 3673. 3a 2667. 86 13 Q59/28/92 13-O7A6S9AREV 1217.83 1652. a3 13* FENDING @3/26/91 FOL@3z891 165@. @3 @. aa a. Qa 14 9812.80 12/11/89 9612. aa 14 @3/89/9@ = 14-e3u99a 3596. 84 6215. 16 14 @5/01/92 W/0#14-5ea19a 3665. 64 2549. Se 14 @9/28/9@ 14-@7A690REV 967.16 1562. 16 14* PENDING @3/23/92 POL@Z2A392-h 1582. 16 Q. 2a a. aa 1S 9429.82 12/11/89 9429. aa 1S @3/05/98 23@99IB-WOH1S 1533.67 7898. 33 1S Q@5/@1/9@ W/G#15-Seaiga 4655. 92 3239.41 1S Q59/26/98 15-A7239NREV 1634.63 1404.56 1S« PENDING @2/83/92 FOL@ZA39z-C 1404.55 @. aa @. Sei 15635@.@2@ TOTALS TO DATE 156352. wa Q. a2 @. a2