R404A在螺杆乙二醇机组中替代R22性能试验研究

================R404AR22*116033116033HFCR404AR125/R143a/R134a44/52/4wt%R22R22YCLG16R404AR22R404A20%2%～6%12%～15%COP8%～19%10%R404AExperimentaIInvestigationonPerformanceofScrewGIycoIunitusingR404AasSubstituteforR22LiuYanli☆WangZhimingandZhouHaifeng☆ianJiaotongUniverityPotdoctoralworkingtationofDalianBinghanCompanyDalian116033ChinaAbstractlnordertoinvetigatethefeaibilityandpracticabilityofazeotropicHFCrefrigerantblendofR404AR125/R143a/R134a44/52/4wt%aanalternativetoR22theYCLG16open-typecrewglycolChilleroriginallydeignedforR22wapartiallymodifiedandthenchargedwithR404A.TheperformanceexperimentofthecrewglycolChillerwereconductedunderdifferentoperatingcondition.TheexperimentalreultobtainedhowthatcomparedwiththeperformanceparameteroftheChillerUingR22theworkingpreurerefrigerationcapacityandenergyconumptionoftheR404Aunitincreaeby20%2%-6%and12%-15%repectivelythedichargetemperaturefall5℃～10℃andCOPdecreaebyabout10%.KeywordsPyrologyAlternativerefrigerantExperimentalinvetigationR404APerformance11992CFCsHCFCsR22R221～4ODPOzoneDepletionPotentialGWPGlobalWarmingPotentialHFCR22R134aR404AR407CR404AR22-40.8℃-46.6℃0.4℃R22R22R404AR22R404A5～7R502R22R22R404AR22R2222.1YCLG1652*2004111264200512R404AR22Vol.26No.4Dec.20051K16DANFOSSPHTPTV2YCLG161YCLG162YCLG162.2R404AR22R404AR22YCLG161YCLG16PdPsPcTcwiTcwoTsiTso2R22R22YCLG16QeCPsVsTsiTsoQcVcwTcwiTcwoNPsPdTdPoilToilPcR404A3R404A62264200512JournalofRefrigerationVol.26No.4Dec.2005R22POER404AR404APdPsQeNCOP2.3R404AR22100%30℃35℃1037kg/m3～1050kg/m3-15℃～0℃Tsi-Tso5℃5℃±1%33.134R404AR22PdPsTso3R404AR22Pd4R404AR22Ps1R404APdR223.0barTcwo35℃R404AR22Pd18.0bar15.0barPdR2219bar49℃K1620barR404AR404AR22R404A2R404AR22PsTsoR404APsR22R404AR22PsTso-15℃0℃2.9bar～5.3bar2.4bar～4.2bar3.2R404AR22QeNQcCOP53.2.1R404AQeR222%～6%Tc40℃5℃-20℃～-5℃R404AR22R404AR2296%～101%R404AR222%～6%YCLG16R404AQeR22R404AR226R404AR22KeR404AR22Tso1R404AR404AR2270%40%40%R404A72264200512R404AR22Vol.26No.4Dec.20052R404AR404AR22R404A5R404AR22QeQcNCOP6R404AR22KeKc3.2.25R404ANR2212%～15%R404AN=mΔh/ηi/ηm/ηsNmΔhηiηmηsNmΔhR404AΔhR2223%R404AmR2240%N3.2.37R404AR22Tc8R404AR22TdR404AQeNR22R404AQcR2210%7R404ATcR220.5℃38.2℃R404A6R404AR22R404AR223.2.4R404ACOPR2210%R404A82264200512JournalofRefrigerationVol.26No.4Dec.20053.3TdNCPTdNCPR404ACPR2230%R404ANR2212%～15%CPTdR228TdTsoR404AR22Td4R404AR22YCLG161R404APdPsR222R404AQeNR222%～6%12%～15%COP10%3CPR404ATdR225℃～12℃4R404AKcR22Qc10%R404AR22Tc38℃R404AR225R22R404AR22R404AR221DYLeeYAhnYKimetal.Experimentalinvestigationonthedrop-inperformanceofR407CasasubstituteforR22inscrewchillerwithshell-and-tubeheatexchangers.InternationalJournalofRefrigeration2002255575～5852.R407CR410A.200331242～453CeciliaGabrielliLennartVamling.ReplacementofR22intube-and-shellcondensersexperimentsandsimulations.InternationalJournalofRefrigeration1997203165～1784..20033228～305CApreaRMastrulloFdeRossi.BehaviourandperformancesofR502alternativeworkingfluidsinrefrigeratingplants.InternationalJournalofRefrigeration1996194257～2636.R404AR502.1996358～637SaumuelMMFontaine.PredictionofcondensationcharacteristicsofalternativestoR502insideair-refrigerantenhancedsurfacetubing.AppliedThermalEngineering2000202199～================21220051111ASHRAEASHRAE7092264200512R404AR22Vol.26No.4Dec.2005