乘员舱侧蒸发-气冷双用型 CO2 微通道换热器传热与压降特性研究
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Numerical Study of Heat Transfer and Pressure Drop Characteristics of an Evaporator-Gas-Cooler Cooling Dual-Purpose CO2 Microchannel Heat Exchanger at the Passenger Compartment Side
Wei Jiaqi，Wu Weidong，Huang Yichen，Chen Lang，Feng Jie （Schoolof EnergyandPower Engineering，Universityof ShanghaiforScience and Technology，Shanghai 200093） 【Abstract]This study developedand validated aone-dimensional simulation modelonthe Dymola platform to analyze theperformanceofadual-mode evaporative-gas-cooled microchannel heat exchanger under various operatingconditions.The efectsofvariousrefrigerantandairinletparametersontheheattransferandpressuredropcharacteristicsofthemicrochannel heat exchangerin HeatPump（HP）mode are analyzed.Thesimulationresults show thatin HPmode，amoderate increase in refrigerant inlet presure and heat exchangerinletairflowvolumecanboth enhancethe heat exchange amount while reducing thepressure dropontherefrigerant side.ForeachO.5MPa increaseinrefrigerantinlet pressure，theheat exchange amount increasesby2.6%，averaging a 9.5% reduction in the pressure drop on the refrigerant side.Increasing the air inlet volume on theairsideand decreasing theair inlettemperature bothreducethe pressredropwhileincreasing theheat transfer，but simultaneously decreasing the outlet air temperature.
Keywords： Automotive air conditioning， Evaporator-gas-cooler dual-purposeheat exchanger， CO2 heat pump system，Heat transfer performance，Pressure drop
【引用格式】魏嘉祺，武卫东，黄逸宸，等.乘员舱侧蒸发-气冷双用型 CO2 微通道换热器传热与压降特性研究[J].汽车工 程师，2026（2）：9-14+20. WEIJQ，WUWD，HUANGYC，etal.Numerical Studyof Heat Transferand Pressure Drop Characteristics of an Evaporator-Gas-Cooler Cooling Dual-Purpose CO2 Microchannel Heat Exchanger at the Passenger Compartment Side[J].Automotive Engineer，2026（2）： 9-14+20
1前言
在新能源汽车中，除传统的制冷与制热功能外，热泵空调系统还承担三电系统热管理等功能。（剩余9207字）
