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Figure3.1:
Methodologyoverview
3.2ProjectFlow
Thisprojectconsistsoffourmajorstepswhicharestatedbelow.Thestepsare:
i.StudytheSolarCookingConcept
Asapreludeinmyresearch,firstandforemost,Istudiedaboutthesolartogetbasicunderstandingonthesolarenergy,concentrationofthethermal,solarapplication,typesofsolarcookersandthesolargreenhouseconcept.Itisimportanttogathersomeideasofthefundamentalsofsolarcooking.
Ifurtheredmystudiestogetdetailinformationaboutjusttheboxtypesolarcookertobefocusedon.Then,theknowledgeobtainedwillbesuitedwiththefabricatedsolarcookerwhichistheQuintupletExposureBox-TypeSolarCooker.
ii.ProductFabrication
TheproductfabricationwasdoneatMechanicalEngineeringWorkshopofUiTManditconsumedapproximatelytwoweekstocomplete.Mostoftherawmaterialsusedwereobtainedfromtheworkshopexceptthewheelswhichboughtfromtheoutside.Forthecooker,itconsistsoftwodifferentsizesofassembledglasses.
Table3.1:
Fabricatedproductsandtheirpurposes
No
Product
Purpose
1
Trolley
Toprovidetransportabilityandsupportthecooker
2
Glass1(Bigglass)
Toactasabiggercookertogatherheatenergy
3
Glass2(SmallGlass)
Toactasasmallercookertogatherheatenergy
iii.ProductTesting
Twomajortestingwereheldwhicharesingleanddouble-layeredquintupletexposuresolarcooker,whereeachofthemconsistofthreeminortestssubjectnamely‘empty’,‘hydro’and‘food’testing,sobringtotalofsixtestingasshowninTable3.2below.
Table3.2:
Totalnumberofproducttesting
Testing
TestingSubject
Single-LayeredQuintupletExposureBox-TypeSolarCooker
Empty/Unloaded
Hydro
Food
Double-LayeredQuintupletExposureBox-TypeSolarCooker
TotalTesting
6
iv.Analysis
Eachtestingisanalyzedtofinditsheatenergystored.Resultsbetweensingleanddouble-layeredarealsocompared.Forthehypothesis,highercookerstemperaturewillstoremoreheatenergy,andthedouble-layeredcookerwillproducebettercookingefficiencycomparedtosingle-layeredcooker.
3.3ResearchConcept
Thisprojectwillfocusonthegreenhouseconceptwheretheenergyfromsunwillpassthroughtheglassesofquintupletsolarcookerandatthesametime,theheatinsidecookertravelsbackintotheatmosphere,butthegasesinatmospherewillblocksomeoftheheatfromescapingtotheoutside.Sowhenthesunlightcontinuouslystrikesthecooker,theheatinsidewillbecomewarmerandwarmeruntilthetemperaturedifferencebetweeninsideandoutsideisobvious.
3.4DesignConcept
TheresearchoftheQuintupletExposureBox-TypeSolarCooker’sconceptisbasedontheordinarybox-typesolarcookerwhichisavailableinthemarket,butthedifferenceisitbeingdesignedtohavefivesidesthatareexposedtothesunlightcomparedtoonlyone.
Figure3.2:
Comparisonbetweenquintupletcookersandavailablecooker
Theconceptondesigningthesecookersaremadebyconsideringfactorssuchaseasytobuild,lowcost,safety,stabilityanduserfriendly.TheseQuintupletExposureBox-TypeSolarCookersareinrectangularshape.Theyaresupportedbyatrolleywhichdesignedtohaveadoorattheunderneaththecookerwillbeplaced,souserscantransferfoodsinsideitbecomeeasier.Thetrolleyhasfourwheelstoprovideportabilityofthecooker.CatiaP3V5R17softwareisusedinthepartsdesignandproductsassembly.Figure3.3showstheconceptualdesignofDouble-LayeredQuintupletExposureBox-TypeSolarCookerwhichconsistoftheassemblyoftrolley,glass1,glass2andreflector.
Reflector
Glass1(Small)
Glass1(Big)
Figure3.3:
ConceptualdesignofDouble-LayeredQuintupletExposureBox-TypeSolarCooker
Figure3.4belowshowstheconceptualdesignofSingle-LayeredQuintupletExposureBox-TypeSolarCookerwhichconsistoftheassemblyofonlytrolley,glass1andreflector.Theabsenceofglass2makesthecookeronlyonelayered.
Figure3.4:
ConceptualdesignofSingle-LayeredQuintupletExposureBox-TypeSolarCooker
3.5FabricationofQuintupletExposureBox-TypeSolarCooker
ThefabricationprocesswasconductedonDecember2009andittook