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RC270在冷冻冷藏箱系统中最佳充注量实验分析.docx

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RC270在冷冻冷藏箱系统中最佳充注量实验分析 Abstract Inrefrigerationandstoragesystems,refrigerantshaveacrucialroletoplayinensuringthesystemworkseffectivelyandefficiently.Oneofthecriticalfactorsthatdeterminetheoptimalperformanceofrefrigerantsisthechargelevel.Thus,thisstudyaimstodeterminethebestchargelevelofRC270usedinarefrigerationandstoragesystem.TheexperimentexaminestheeffectofchargelevelontheperformanceofRC270refrigerantusingathermo-dynamiccycleanalysis.TheresultsrevealthattheoptimalchargelevelforRC270inrefrigerationandstoragesystemsiswithintherangeof70-80%. Introduction Refrigerantsplayasignificantroleinrefrigerationandstoragesystems,wheretheyareusedtolowerthetemperatureintherefrigerator/freezer.RC270isarefrigerantusedinrefrigerationandstoragesystems,anditschargelevelinthesystemisacriticalfactorthatdeterminestheperformanceofthesystem.Overchargingorunderchargingofarefrigerantcanleadtoinefficiencyandmaycausethesystemtomalfunction.Therefore,itisessentialtodetermineoptimalchargelevelsofRC270inrefrigerationandstoragesystems. ResearchObjective TheobjectiveofthisstudyistodeterminethebestchargelevelofRC270inrefrigerationandstoragesystem.ByconductinganexperimenttoexaminetheeffectofchargelevelontheperformanceofRC270refrigerant,thestudyaimstoanswertheresearchquestion:whatistheoptimalchargelevelforRC270inrefrigerationandstoragesystems? Methodology Theexperimentalsetupusedwasarefrigerationandstoragesystemthatconsistedofacompressor,condenser,evaporator,andanexpansionvalve.ThesystemwaschargedwithRC270refrigerantatvaryinglevelsrangingfrom50%to100%oftheratedcharge.Thesystemwaslefttostabilizefor30minutesbeforeeachtestwasconducted,withthreereplicationsmadeforeachchargecondition. Datawerecollectedusingathermocoupletomeasurethetemperatureatvariouspointsinthesystem,andpressuregaugeswereusedtoobtainthepressuredata.Thereadingswerethenanalyzedusingathermodynamiccycleanalysistodeterminethecoefficientsofperformance(COP)andthespecificrefrigerantconsumption(SRC)ateachchargelevel. Results Theresultsshowedthatthe