fabrication solar dryer3.docx

fabrication solar dryer3.docx

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fabricationsolardryer3

CHAPTERIII

RESEARCHMETHODOLOGY

3.1Introduction

Inthischapter,themethodsandprocessesthatwereusedtocompletethisprojectareexplainedindetail.AlltheprocessesinvolvedaresimplifiedintothefollowingflowchartasshowninFigure3.1.Anyadditionalandnecessaryprocessoractionuponcompletionofthisprojectwillbeexplainedinthischapter.Figure3.1showstheflowoftheoverallprocessinthedevelopmentontheheatandefficiencycharacterizationofQuintupletExposureBox-TypeSolarCooker.

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

No

Testing

TestingSubject

1

Single-LayeredQuintupletExposureBox-TypeSolarCooker

Empty/Unloaded

Hydro

Food

2

Double-LayeredQuintupletExposureBox-TypeSolarCooker

Empty/Unloaded

Hydro

Food

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）

Trolley

Figure3.3:

ConceptualdesignofDouble-LayeredQuintupletExposureBox-TypeSolarCooker

Figure3.4belowshowstheconceptualdesignofSingle-LayeredQuintupletExposureBox-TypeSolarCookerwhichconsistoftheassemblyofonlytrolley,glass1andreflector.Theabsenceofglass2makesthecookeronlyonelayered.

Trolley

Reflector

Glass1（Big）

Figure3.4:

ConceptualdesignofSingle-LayeredQuintupletExposureBox-TypeSolarCooker

3.5FabricationofQuintupletExposureBox-TypeSolarCooker

ThefabricationprocesswasconductedonDecember2009andittook