蒸发器出口过热度对汽车空调性能影响的实验研究_严瑞东

35320146JournalofＲefrigerationVol．35No．3June20140253－4339201403－0086－04doi10.3969/j.issn.0253－4339.2014.03.086200240、COP19．4%COPCOP17．8%。COPTB61+1U270．38+3AExperimentalStudyontheEffectofSuperheatonPerformanceofAutomotiveAir-conditioningYanＲuidongShiJunyeChenJiangpingInstituteofＲefrigerationandCryogenicsShanghaiJiaoTongUniversityShanghai200240ChinaAbstractSuperheatofevaporatoroutletisasymbolofstateofair－conditioning．Inordertostudytheeffectofsuperheatontheperform-anceofevaporatorandsysteminautomotiveair－conditioningaserialexperimentshavebeendone．Anewkindofvalvehasbeenusedtocontrolthesuperheatinthestandardautomotiveair－conditioningbenchandtheeffectofsuperheatontheperformancehasbeenstudied．Theresultsshowcapacityofevaporatorincreaseswiththedecreaseofsuperheatanditcanreach19．4%inthestudy’ssystem．COPincreasestoamaximumvaluethendecreaseswiththedecreaseofsuperheatofevaporatoroutletanditcanreach17．8%inthestudiedsystem．Keywordsautomotiveair-conditioningsuperheatcapacityCOP2013613HVAC。1。2。CO2COP3。4。5－6。H—68—35320146Vol．35No．3June2014。11、、、、。、。。。7。±5%。。、。、。。DPDBWBPT1Fig．1Automotiveair-conditioningbench。。1。Moffat72。1Tab．1Measureparametersandaccuracy/℃±0.5－40～200/kPa±10.00～3000/Pa±2.00～500/kg/h±1.50～500/r/min±100～6000/N·m±0.020～50—78—35320146JournalofＲefrigerationVol．35No．3June20142Tab．2UncertaintyofparametersmeasurementCOP±3%±2.4%±3%±1.9%23。。3Tab．3Experimentalconditionsincoolingsystem/℃27/℃19.5/m3/h500/℃35/m/s4.5/r/min1800Ｒ134a3。Wcomp=Icomp·Ucomp1Qcool=m·hevpout－hevpin2COP=QcoolWcomp3Δt=Tevpout－TPevpoutsat4215℃11℃11℃19.4%。2Fig．2EffectofsuperheatonperformanceCOP315℃11℃COP11℃COP11℃COP17.8%。3COPFig．3EffectofsuperheatonCOP48℃2℃。5。、COP、—88—35320146Vol．35No．3June20144Fig．4Effectofsuperheatontemperatureofevaporatoroutlet5Fig．5EffectofsuperheatonevaporatortemperatureCOP。4COP119.4%。2COPCOPCOP17.8%。3。、COP。1．J．200129450-52．ZhongHuaTangShuangboChenZhijiu．ThestudyoneffectofevaporatorsuperheatonevaporatorandwindtemperatureJ．FluidMachinery200129450-52．2GruhleWD．ModelingandControlofaＲefrigerantEvapo-ratorC//AmericanControlConference1985287-292．3．CO2J．2005451134-36．ZhangHuiyong．EffectsofsuperheattemperatureandhighpressureontranscriticalautomobileairconditioningsystemsusingcarbondioxideasrefrigerantJ．TsinghuaScienceandTechnology2005451134-36．4．J．200533943-47．LiangCaihuaZhangXiaosongXuGuoying．Simula-tiveandExperimentalStudiesontheEffectofSuperheatDegreeontheＲefrigerationSystemPerformanceJ．FluidMachinery200533943-47．5．J．200324310-15．ChenYouhuaChenZhi-jiu．ComparisonＲeasearchofExpansionValveinＲefrige-rationMachinesJ．JournalofＲefrigeration200324310-15．6．ＲBFJ．200223245-48．GongChikunHuaZezhao．TheIdentificationandSimulationofEvapora-torSuperheatbyUsingＲBFNetworkJ．JournalofＲefrig-eration200223245-48．7MoffatＲJ．DescribingtheUncertaintiesinExperimentalＲesultsJ．ExperimentalTh[e-mail]。。。AbouttheauthorYanＲuidong1990－malemasterSchoolofrefrigerationand[e-mail]theapplicationofsmalldiameterheatexchangerandheatpumpsysteminelectricalvehicle．—98—