Case Study_SUNFOLD powers a living camp of a

CaseStudy
Date:
April18,2016
SUNFOLDpowersalivingcampofamineinRDCongo
PowerRequirements
Thelivingcampismadeupof18ISOcontainersandhasanestimatedavegaredailyconsumptionofca.325kWh.Theconsumptionismoderateduring
thedaytimeandfairlyheavyduringthenighttime.Thedailypeakconsumptionisestimatedat24kW.Seenovertheyeartheaveragedaily
consumptionisconstant.
Location
TypicalSUNFOLDSet-up
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SystemInputParamaters
Location
KolweziRDCongo
Estimatedmaxiumumdailyconsumption
Consumptionprofile
kWh
325
Moderatedaytimeandheavyeveninguser
Estimateddailypeakpowerconsumption
kW
Averageannualprofile
24
Constantconsumption
SUNFOLDConfiguration
NumberofSunfolds
18
TotalinstallednominalPVpeakpower
kWp
Inclinationofsolararrays
Fixedtilt
84
0°
Totalinstalledbatterycapacity@C100
kWh
389
Availableenergystoragecapacity@D.O.D.50%/C100
kWh
194
Estimatedbatterylifetime(365cyclesperyear@30°C)
years
6
Option1:EachSUNFOLDsystemservesaseperatemonophaseload
kW
4,5
Option2:3parralleledSUNFOLDsystemserveacommonmonophaseload
kW
13,5
Option3:3x3parralleledSUNFOLDsystemsserveacommontriphaseload
kW
40,5
Estimatedannualgeneratedenergy
kWh
130.150
Estimatedannualconsumedenergy(onmonthlyaveragebasis)
kWh
118.625
Estimatedannualenergybalance(onmonthlyaveragebasis)*
kWh
Estimateddailyloadthatcanbeserved(Jan-April-July-Oct)
kWh
Estimatedsystemautonomyataverageconsumption
hrs
14
EUR/kWh
0,61
Maximumpeak
powerfromthe
system
EnergyBalance(Productionvs.Consumption)
11.525
242
323
323
323
note*:canbeavoidedbyoptimizingtheloadprofileorcanbestoredinanadditionalbatterypack.
ElectricityCost*andDieselsavings
Estimatedpriceofelectricityfromdieselgenset(onlyfuelconsidered)
Estimatedpriceofelectricityoverthelifetimeofthebatteries
6 years
EUR/kWh
0,55
Estimatedpriceofelectricityincl.onebatteryreplacement
12 years
EUR/kWh
0,32
Estimatedpriceofelectricityincl.twobatteryreplacements
18 years
EUR/kWh
0,25
EUR/year
72.818
Estimatedannualfuelsavings@1,5€/ltr
note*:financing,taxes,insurance,maintenance,transport,depreciationnotincluded
Optionalback-upgenset*
OptimalGensetrating
kVA
Estimateddailyrunninghours(Jan-April-July-Oct)
hrs
7,5
8
0
0
0
note*:Forinformationonly.Aback-upgensetisnotstrictlynecessaryandcanbeavoidedbyoptimizingtheloadprofilee.g.bytime-regulated
consumptions
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DailyGeneration&ConsumptionProfile
Thebelowchartshowsthepredictedenergyproducedandeneryconsumedonanaveragedayduringeachmonthoftheyear
60
50
Consumption
40
Jan
Power(kW)
30
April
July
20
October
10
00
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23
-10
0
1
2
3
4
Tmeintheday
MonthlyEnergyBalance
Thebelowchartshowstheenergybalanceonanaveragedayduringeachmonthoftheyear
450.0
400.0
350.0
kWh
300.0
250.0
Consumption
200.0
Production
150.0
100.0
50.0
1
2
3
4
5
6
7
8
9
10
11
12
Monthoftheyear
Theabovegraphshowstheratiobetweenproducedandconsumedenergy.Eventhoughonamonthlyaveragethegraphshowsexcessenergy,itmay
occurethatondailybasisthesystemcannotservetheload.e.g.Incaseofheavynightconsumers.
Conclusion
Thiscasestudyshowshowalivingcampofacopperminemadeof18containerscanbepoweredby18Sunfolds.Theannualfuel
savingsareestimatedtoca.73.000€withoutcomprimisingonpoweravailabiity.Inordertocopewithreducedcleanenergy
availabityduringwintermonths,asmallgensetof7,5kWcanbeconsidered.Thebetteralternativeistoinstalloneormoreof
TigerPower'sStoragersthatprovidelongtermenergystorage.
Disclaimer
Thiscasestudyreportisforinformationonlyandconnotbeconsideredasbinding.Thecalculationsarebasedontheinformationmadeavailableto
us.Incaseofmissingdatatypicalvaluesarepresumed.Thecalculationisperformedwithtpyicaloff-gridsystemefficienciesfordirectandindirect
consumption.Theactualefficiencyofthesystemvarieswithtemperature,irradtiation,cablelengts,consumptionprofilesandotherenvironmental
factors.
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