Loading...
HomeMy WebLinkAboutUpper Kobuk Region Biomass Project Ambler City Hall-Washeteria Engineering Package - 2015 - REF Grants 7040028, 7050840Northwest Arctic Borough Upper Kobuk Biomass Project Appendix A - 0 APPENDIX A – AMBLER CITY HALL / WASHETERIA ENGINEERING PACKAGE --- A-1: Project Site Plan A-2: Boiler Building Design Rendering A-3: General Arrangement A-4: Process Flow Diagram A-5: Bill of Materials Estimate A-6-7: Heat Loading Calculations A-8: Wood Utilization and Fuel Oil Offset Calculations A-9: Life-Cycle Value Analysis Pro Forma SECTION A-A6"16'OUTSIDE12' OUTSIDE6' DOUBLE DOOR6"TYP.5'CLEARANCE12" TO ALLOWDOOR TOFULLY OPEN18" FROMFLUE TO WALL10' ZONE 6ZONE 5ZONE 4ZONE 3ZONE 2ZONE 1EXPANSIONTANKVENT/DRAINNEWWOODFIREDBOILEREXISTINGOIL FIREDBOILERS(NOTE 1)CIRCULATING PUMPSNOTES:1. WEIL-McLAIN BOILER. MODEL WTGO-4SERIES 3, NO. 2 FUEL OIL.D.O.E. HEATING CAPACITY 145,000 BTU/HR2. GARN WOOD BOILER MODEL WHS-1000.180,000 BTU/HR.MECHANICAL ROOMOUTSIDEOUTSIDENEW BOILER HOUSEPLATE HEATEXCHANGER(NOTE 2) Northwest Arctic Borough Upper Kobuk Biomass Project Appendix A - 5 Description Quanity Total Cost Vendor GARN SystemincludingHeatExchanger GARN Jr. WHS1000(deliveredFairbanks) 1 14,826.00$ DectraCorp. Plate ExchangerB120Tx30 1 1,389.00$ DectraCorp. GrundfosAlpha15-55FCastIronpump with terminal box (1½") 6 158.85$ pexsupply.com Webstone SweatIsolatorFlange (pair1½") 1 63.45$ pexsupply.com Watts1½"LF3001CXF DielectricUnion 1 68.30$ pexsupply.com Watts1½"LFS777S Bronze Wye Strainer 10 91.45$ pexsupply.com ClassA Through the Wall 6"Chimney kit 1 2,066.00$ woodlanddirect.com Cello1½"Copper90°elbow 10 48.50$ pexsupply.com Cello1½"copperx male adapter 4 25.60$ pexsupply.com Cello1½"copperx female adapter 4 24.60$ pexsupply.com CopperPipe 1½"10ftlengths 2 198.00$ Grainger ExistingSystemtonewHeatExchanger GrundfosAlpha15-55FCastIronpump with terminal box (1 ½")1 158.85$pexsupply.com Webstone SweatIsolatorFlange (pair1½")1 63.45$pexsupply.com Watts1½"LF3001CXF DielectricUnion 2 68.30$pexsupply.com Watts1½"LFS777S Bronze Wye Strainer 1 91.45$ pexsupply.com Cello1¼"x1¼"x1½"copperTee 6 92.40$pexsupply.com Hydrovalve 1½"full portsweatball valve 1 26.55$pexsupply.com Hydrovalve 1¼"full portsweatball valve 1 25.45$pexsupply.com Cello1½"Copper90°elbow 10 48.50$ pexsupply.com Cello1½"copperx male adapter 4 25.60$pexsupply.com Cello1½"copperx female adapter 4 24.60$pexsupply.com CopperPipe 1½"10ftlengths 2 198.00$GraingerSupply 1½"pipe insulation 1"Nomacokflex 2 128.80$GraingerSupply Clamp for1½"PEX Pipe 6 40.80$BadgerInsulatedPipe 1½"x 1½"PEX Crimp MPT 6 119.34$BadgerInsulatedPipe E-ZLay 1½"5wrapInsulated undergroundpipe OxygenBarrier(EZ450B)60 435.00$BadgerInsulatedPipe Charlotte Pipe 6"x 10ft.Solid PVCSewerDrain Pipe 10 210.00$ Lowes AmericanValve 8"dia. X 100'LGalvanized HangerIron 2 30.34$ Lowes BoilerBuilding 2"x 4"Steel Studes 52 8 311.48$ Spenards 2"x 4"Steel Roof Joists 30 8 179.70$ Spenards RimJoists, CenterBeam- 2"x 4"Steel 4 8 23.96$ Spenards Sheet Aluminumforsiding 448 SF 576.43$ Spenards Sheet Aluminumforroof 252 SF 324.24$ Spenards Door 1 Each 400.00$ Garage Door- Spenards 2"x 12"FloorJoists 16 12 490.82$ Spenards 6"x 12"EndBeams forFloor 2 16 208.38$ Spenards DeckSheething(Treated1") 192 SF 11,520.00$ Spenards Mortarfor Floor 0.6 CY 1,777.78$ Drake-$3000/yardinstalled Screws, fasteners, miscellaneous 1.0 Each 250.00$ Insulation 1536.0 SF 7,372.80$ FeedstockStorage Building 4"x 4"Posts 4 10 69.19$ Spenards 4"10"Beams 2 16 212.86$ Spenards- price for4"x 12" 2"x 6"SidingSide Planks 9 16 188.06$ Spenards 2"x 6"SidingPlans 18 8 188.06$ Spenards Numberof IronFasteners 40 Each 280.00$ Spenards Roof Joists 2"x 6" 16 10 240.00$ Spenards Aluminum forroof 160 SF 205.87$ Spenards Screws/Nails/Bolts 250.00$ Northwest Arctic Borough Upper Kobuk Biomass Project Appendix A - 6 DESIGN CONDITIONS Design Indoor temp 70 F Design Outdoor temp -47 F ASHRAE (97.5% for Fairbanks, AK) Wall insulation R-24 0.0417 Roof insulation R-38 0.0263 Crawlspace insulation R-38 0.0263 Window rating R-3.2 0.3125 Door rating R-4 0.2500 EXPOSED SURFACE AREAS WALLS Length Height Area Original building ft ft ft 2 North Face 46.33 18 833.94 East Face (partial exposure) 34.25 8 274 South Face 46.33 18 833.94 West Face 34.25 20 685 Washeteria Addition North Face 14 9 126 East Face 26.5 11 291.5 South Face 14 9 126 West Face 0 0 0 Windows (Qty (3) 4' x 5' and Qty (1) 3' x 3') 69 Doors 42 ROOF AND CRAWL SPACE Original Building floor area 1180 Washeteria Addition floor area 371 Conductive Heat Loss U area delta T Heat Loss (Btu/hr-ft2-F)(ft2) (F) (Btu/hr) Total Wall Area 0.0417 3059 117 14,914 Window Area 0.3125 69 117 2,523 Door Area 0.2500 42 117 1,229 Total Roof Area 0.0263 1861 117 5,731 Total Crawl Space Area 0.0263 1551 117 4,775 Subtotal Conductive Heat Loss 29,172 Convective Heat Loss Fenestration* Ventilation Make-up rate* 605 cfm Dryers qty 6 Dryers exhaust 220 cfm each Dryers exhaust 1320 cfm Total ventilation 1320 cfm *(ignore due to dryer exhaust) Subtotal Ventilation Heat Required 169,884 Btu/hr Heat Required =1.1 x cfm exhausted x (design inside T - design outside T) Total Building Heat Required 199,056 Btu/hr City Hall / Washeteria Heating Requirements Northwest Arctic Borough Upper Kobuk Biomass Project Appendix A - 7 The following assumesthat Dryers purchased for Washeteria are equivalent in heat demand to the Speed Queen electric dryers specified by Larsen Consulting Group. Dryers Dryer Quantity 6 units Dryer Heating Element 5350 watt each Combined Dryer Heat Required 32,100 watt Converting to BTU 109,627 Btu/hr Subtotal Dryer Heat Required 109,627 Btu/hr Hot water required for Showers and Washers Specified Water Heater (oil fired) 415,900 Btu/hr Subtotal Hot Water Heat Required 415,900 Btu/hr Washeteria Laundry/Shower Heat Requirements Northwest Arctic BoroughUpper Kobuk Biomass ProjectAppendix A - 8ASSUMPTIONS:1. Wood fired heater is fueled 7 days a week over an eight (8) hour period. It is estimated this will result in an average daily firing rate of 9 hours.2. Heat storage in wood heater jacket maintains building temperature until heat storage is exhausted3. Oil fired heaters kick on to maintain building temperature until wood fired heater is refueled and fired.DESIGN CONDITIONSJAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DECDesign Indoor temp7070 70 70 70 70 70 70 70 70 70 70Avg Monthly High Outdoor temp3 11 25 44 61 717166 54 32 12 7Avg Monthly Low Outdoor temp-11 -7 2 21 36 48 51 45 34 16 -2 -8Avg Monthly Outdoor temp-42 13.5 32.5 48.5 59.5 61 55.5 44 24 5 -0.5Conductive Heat Loss UA249.3 249.3 249.3 249.3 249.3 249.3 249.3 249.3 249.3 249.3 249.3 249.3Convective Heat Loss factor1452 1452 1452 1452 1452 1452 1452 1452 1452 1452 1452 1452Avg Heat Load (Btu/hr)125,899 115,691 96,125 63,800 36,579 17,864 15,312 24,669 44,235 78,261 110,587 119,944Monthly Heat Load (Btu/month)90,646,937 83,297,186 69,210,161 45,935,948 26,336,610 12,862,065 11,024,627 17,761,900 31,848,924 56,348,096 79,622,310 86,359,582GARN Heat Storage Capacity540000 540,000 540,000 540,000 540,000 540,000 540,000 540,000 540,000 540,000 540,000 540,000Hours of storage4.29 4.67 5.62 8.46 14.76 30.23 35.27 21.89 12.21 6.90 4.88 4.50MAXFiring Time - GARN unit9 9 9 9 9 9 9 9 9 9 9 9Off Time - (heat storage)4.29 4.67 5.62 8.46 14.76 30.23 35.27 21.89 12.21 6.90 4.88 4.50Oil Firing Time10.71 10.33 9.38 6.54 0.24 0.00 0.00 0.00 2.79 8.10 10.12 10.50Fuel Oil Usage (Btu output/month)40,454,336 35,860,741 27,056,351 12,509,967 260,381 0 0 0 3,705,577 19,017,560 33,563,944 37,774,739Annual Heat Load (Btu/year) 611,254,347Annual Fuel Oil Heat Load (Btu/year) 210,203,596Annual Offset Fuel Oil (Btu Output/year) 401,050,750Conversion 8.766 gallon No.2 fuel oil/million Btu outputAnnual Fuel Oil Offset 3,516 gallons per yearWood Use 29.76 cords per yearAmbler City Hall / Washeteria Fuel Oil Offset Northwest Arctic BoroughUpper Kobuk Biomass ProjectAppendix A - 9Year ConstructionCords WoodFeedstock Operation and Avoided Cost Net End-ofYearInputsProcessed Cost Maintenance (Fuel Oil) Revenue (Loss) BalanceFeedstock Material Cord Wood 0($286,847)30($6,250) ($11,600)$38,676($266,021) ($266,021)Process Input (cords/yr) 29.76 1 30($6,250) ($11,600)$38,676 $20,826($245,194)Process Input (tons/yr) 38.99 2 30($6,468) ($11,774)$40,030 $21,787($223,407)Feedstock Cost ($ / cord) $210 3 30($6,695) ($11,951)$41,431 $22,785($200,622)4 30($6,929) ($12,130)$42,881 $23,822($176,800)Captial Expenditure (Net) $286,847 5($1,500)30($7,172) ($12,312)$44,382 $23,398($153,401)O&MExpense (annual) $11,600 6 30($7,423) ($12,496)$45,935 $26,016($127,386)7 30($7,682) ($12,684)$47,543 $27,176($100,209)Fuel Oil Savings (gal annual) 3,516 8 30($7,951) ($12,874)$49,207 $28,381($71,828)Fuel Oil Cost ($ / gal) $11.00 9 30($8,230) ($13,067)$50,929 $29,632($42,196)10($1,500)30($8,518) ($13,263)$52,711 $29,431($12,765)inflation rate 1.5% 11 30($8,816) ($13,462)$54,556 $32,278 $19,513 * Simple Paybackenergy value inflation rate 3.5% 12 30($9,124) ($13,664)$56,466 $33,677 $53,190Discount rate 5% 13 30($9,444) ($13,869)$58,442 $35,129 $88,320O&Mcost adjustment factor 1 14 30($9,774) ($14,077)$60,488 $36,636 $124,95615($1,500)30($10,116) ($14,288)$62,605 $36,700 $161,65616 30($10,470) ($14,503)$64,796 $39,823 $201,47917 30($10,837) ($14,720)$67,064 $41,507 $242,98618 30($11,216) ($14,941)$69,411 $43,254 $286,23919 30($11,609) ($15,165)$71,840 $45,067 $331,30620 30($12,015) ($15,393)$74,355 $46,947 $378,253$378,253$127,2918.8%Life-Cycle Cost Model - Ambler Washeteria and City BuildingModel 1 - Garn 1000 Cord Wood BoilerTotal Project Value (end of life)Net Present Value (NPV)Internal Rate of Return (IRR)