三种汽车空调冷凝器性能的试验对比分析-张林颖

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.)1)2)1)()2)()33,,3,3,;,;Theexperimentalcomparisonanalysisonthermalperformanceofthreekindsofcondensersofautomobileair2conditioningZhangLinying1WuYuyuan1LiYanhui21)(XianJiaotongUniversity)2)(ShanghaiSongzhiMobileAirConditionersLtd.)ABSTRACTUndervariableworkingconditions,performstheexperimentsforthreekindsofautomobileair2conditioningcondensers,namelytube2stripstylecondenser,tube2slicestylecon2denserandparalleltubestylecondenser,withdifferentfin2interspaces.Bycomparingandana2lyzingtheexperimentaldata,obtainsoptimumconfigurationandoptimumwindspeeds,namelynormalcondenseranditsmatchingwindspeeds;drawscomparisondiagramsofthermalperfor2manceundervariableworkingconditionsforeachkindofnormalcondensers;presentsmeritsanddemeritsofthethreekindsofcondensersintheirallaspects.Then,comparestheexperi2mentalresultswiththeoldempiricalformulations,obtainsthenewformulationsbyrevisingtheoldone.Theexperimentalresultsoffertheessentialbasisforproductsdevelopmentanddesign,soastoshortentheresearchanddevelopmenttime,speedupthedesigningproceduresfornewproducts,andenhanceeconomicbenefit.KEYWORDScondenser;fin2interspaces;windspeed;windresistance;heattransfercoefficient,1927,4,,,,,3,,,37420078REFRIGERATIONANDAIR-CONDITIONING42247X:2006207210:,E2mail:[e-mail]©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:Nu=0.668Grcos414-0.16(1),,,,fQf=th(ml)ml(2),m2=uf;,;u;;f;lQ=F(Tw-T)f(3),F;Tw;T,,3,2.6mm,2.9mm,3.2mm,3.5mm3.8mm1,10%344:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,,(),,,2TESCOR()2:,4;,54,,,,,,,()4447©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:Qair=mair(h3-h4)(4)R134a,(),,84.0,16.60kg/cm2,5;35,42%,3.05.5m/s,0.5m/s33.1,,,,,,;,,;,,,,,,,3,311,,46.74%,73.29%;,48.1%,78%;,15.6%,32.62%3.2,13/mm2.24.03.2/(ms-1)44.55/MPa0.150.1200.063/Pa14111995/33.833.331.52/22.622.422.0/W8650860010130/m20.21660.20850.1985/(Wm-2)399354124751033/m26.56074.44514.4350/(Wm-2)131819342284/m30.007290.005630.00494/(Wm-3)118655152753205080/(m2m-3)899.9789.5897.7/(Wm-2K-1)58.3186.33103.8,68544:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:7.43%,2.52%-3.77%;-8.98%,-4.07%7.69%;5.51%,3.37%-4.69%(,),,,647©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:pa=0.1107lde()1.7pa=0.1149lde()1.7K:K=1rr+1rF0fFi+F0fFi+ra+1a10K=0.9748rr+1rF0fFi+F0fFi+ra+1a103.4.2,pa:p=4fwFDh,aav2a,max:p=3.6924fwFDh,aav2a,max;KNu=0.0265Re0.8eqPr0.333l=rDhl1.04073.4.3,pa:p=4fwFDh,aav2a,maxp=4.188fwFDh,aav2a,max;K:Nu=0.0265Re0.8eqPr0.333l=rDhl0.9663,,,30%18%,,41)5,TESCOR(),,,2),:2.2mm,4.0m/s;4.0mm,4.5m/s;3.2mm,5.0m/s3)3,34)3,,,,[1]LiangSY,WongTN,NathanGK.Numericalandexperimentstudiesofrefrigerantcircuitryofevaporatorcoils.InternationalJournalofRefrigeration,2001,24(8):5952603.[2]MadiMA,JohnsRA,HeikalMR.Performancecharacteristicscorrelationforroundtubeandplatefinnedheatexchangers.InternationalJournalofRefrig2eration,1998,27(7):5072517.[3]WangCC,TaoWH,ChangCJ.Aninvestigationoftheairsideperformanceoftheslitfin2and2tubeheatex2changers.InternationalJournalofRefrigeration,1999,22(8):5952603.[4]..:,2004.[5]CorberanJM,FernandezdeCordobaP,OrtunoS,etal.Detailedmodelingofevaporatorsandcondensers.EighthIntRefrigerationConference.USA:PurdueUniversity,2000.[6]CavalliniA,DelColD,DorettiL,etal.Heattransferandpressuredropduringcondensationofrefrigerationinsidehorizontalenhancedtubes.InternationalJournalofRefrigeration,2000,23:4225.[7]LeeGH,YooJY.Performanceanalysisandsimulationofautomobileairconditioningsystem.InternationalJournalofRefrigeration,2000,23(3):3362342.[8]OrthLA,ZietlowDC,PedersenCO.Predictionre2frigerantinventoryofR2134Ainair2cooledcondensers.ASHARETrans,1995,23:136721374.744: