变工况条件下的纯电动车热泵系统火用性能分析

摘要/Abstract

摘要：

摘要：基于台架试验数据和热力学第1、2定律，通过改变制冷剂R134a的充注量、室外环境温度和压缩机转速等工况条件，推导出纯电动车热泵系统的性能系数(COP)及其火用损失和火用效率的计算公式，并分析了系统的性能.结果表明：制冷剂R134a的最佳充注量为400 g，纯电动车热泵系统总的火用损失为0.61~1.28 kW；冷凝器和蒸发器的火用效率较低，分别为37.9%~53.1%、34.2%~61.8%.

关键词: 纯电动车热泵系统, 充注量, 变工况, 火用性能

Abstract:

Abstract： Based on the experimental data and the first and second law of thermodynamics, outside air temperature and compressor speed, the coefficient of performance (COP) and exergy destruction and exergy efficiency of an electric vehicle heat pump system were deduced by changing conditions involving refrigerant (R134a) charge. The results show that the optimum refrigerant charge is at 400 g. The exergy destruction is within a range of 0.61-1.28 kW. The condenser and the evaporator has a relatively lower exergy efficiency (37.9%-53.1% for condenser and 34.2%-61.8% for evaporator, respectively).
Key words： electric vehicle heat pump system (EVHPS); refrigerant charge; variable conditions; exergy performance

中图分类号:

TK 123

孙旭东，谷波，田镇. 变工况条件下的纯电动车热泵系统火用性能分析[J]. 上海交通大学学报（自然版）, 2015, 49(05): 608-613.

SUN Xudong,GU Bo,TIAN Zhen. Exergy Performance Analysis of an Electric Vehicle Heat Pump System Under Variable Conditions[J]. Journal of Shanghai Jiaotong University, 2015, 49(05): 608-613.

参考文献

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