电动汽车热泵空调系统混气特性模拟实验研究

Simulation study on the hybrid gas characteristics of heat pump air conditioning system for electric vehicles

基于低温工况下的纯电动汽车热泵空调系统,为降低排气温度、提高换热性能,分别设计了中压、低压混气热泵空调系统,并建立相应系统数学模型,模拟计算系统的排气温度、换热量等主要性能参数,并与实验数据进行对比。研究表明:相对于中压混气热泵空调系统,低压混气热泵空调系统较稳定高效,更能满足电动汽车在低温环境下的需求。

In order to reduce the exhaust temperature and improve the heat transfer performance of a heat pump air conditioning system in blade electric vehicles at low - temperature, a heat pump air conditioning system of the intermediate pressure and low pressure hybrid gas were designed respectively, corresponding mathematical model of the system were established. The main performance parameters of the system were in agreement with the experimental data, such as the exhaust temperature, heat transfer capacity. The research shows that compared with the intermediate pressure hybrid gas heat pump air conditioning system, the heat pump air conditioning system of low pressure hybrid gas is more stable and efficient, and can meet the demand of electric vehicles in low temperature environment.