galena biomass project - alaska wood energy€¦ · log bunks positioned in harvest unit area, ~2-3...
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Galena Biomass Project
SustainableEnergyforGalena,Alaska
TIM KALKE
GENERAL MANAGER
• ProjectHistory• WoodFuelSupply• HeatingSystem
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Presentation Agenda
Anchorage
Fairbanks
Galena
SustainableEnergyforGalena,Alaska
Project History FormerGalenaAirBase
• OwnershiptransitiontoCityofGalena
• RuralEnergyIssues• Inefficientandaginginfrastructure• Oldsteamdistributionsystemconsumed~230,000gallonsannually
• Expensivedieselfuel
• AlaskaEnergyAuthority–RenewableEnergyFundGrant
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Project History FormerGalenaAirBase
• ProjectFeasibilityStudies
• Gana-A‘Yoo,LimitedForestStewardshipPlan
• SteamUtilidorAssessment
• ForestInventoryofGalenaWorkingCircle
• EngineeringDesign
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Project History TimberHarvestEntity
• TheCityofGalena,GalenaCitySchoolDistrict(GCSD)andLoudenTribalCouncil(LTC)createdalocalnon-profitorganization,SustainableEnergyforGalena,Alaska(SEGA)taskedwithprovidingwoodfuelsupply
• Gana-A‘Yoo,Limited,theCityofGalenaandSEGAenteredintoa20-yearTimberSaleAgreement
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Wood Fuel Supply
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SEGA–OrganizedinFall2014
• 20-yearcontract• 4720acres• Predominantlydeciduousspecies
• Mixedconiferandhardwood
• WinterTimberHarvest&ChipProcessing◦ (4successfulseasons)◦ Harvest25acres/year
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HitachiZX200withWaratah622Bprocessor
Wood Fuel Supply
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Logbunkspositionedinharvestunitarea,~2-3cordsperbunk
Wood Fuel Supply
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JohnDeere748G-IIISkidder
Wood Fuel Supply
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Log-landingspositionedontemporarytrail
Wood Fuel Supply
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Peterbiltself-loadinglogtruck
Wood Fuel Supply
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Wood Fuel Supply Oneseasonofpassivedryinghasresultedinanaverageof32%MoistureContent(MCwb)
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BanditM1400knife-chipper
Wood Fuel Supply
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Wood Fuel Supply BulkChipStorage,2-3weeksoffuelwhenfull
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Heating System
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Day-bin,4-5daysworthoffuelwhenfull
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Heating System
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Automatedauger,conveyorbeltandmetering-binfeedsystem
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Heating System
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Burn-boxrearfeedsystemandfrontaccessdoor
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Heating System FormerGalenaAirBase
• 2016SummerConstructionSeason
• Installedheatdistributionandnewdomesticwaterline
• Convertedexistingdieselboilersforhot-water/glycol,installed4.5MMBtuMessersmithburn-boxwithHurstBoilerandperformedseveraladditionalsupporttasks
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Heating System Convertfromasteamtohotwaterheatdistributionsystem
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Heating System Above-gradesegmentofdistributionlines,somesegmentsarebelow-grade
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Results
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Est.16.5billionBtuHeatRequirement
Annualaverages:
• Oilused–40,000gallons(g)
• Woodused-1600greentons(gt)
• Oildisplaced-195,000g
• Oildisplacedduetobiomass–95,000g
• Newmoneyintroducedtolocaleconomy-$415,000
PreviousSteamsystemused230,000g/year
Systemimprovementsaloneprovide100,000gsavings.
• CostofOil-$5.50/g
• CostofWood-$259/gt
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