摘要
纯电动车集成热管理(ITM)系统能有效提高车辆的能量利用效率,然而兼顾电池、客舱热需求的集成热管理系统结构复杂,针对ITM系统的串联和并联两种构成形式,基于AMESim软件搭建系统仿真模型,从热力学的能量和[火用]角度比较分析两种系统的性能。结果表明:串联系统的性能系数和[火用]效率均明显高于并联系统,制冷模式下,分别平均高7.6%、23.6%;热泵模式下,分别平均高13%、7.6%。随着压缩机转速的增大,两种系统的部件总[火用]损失均明显增大,压缩机和室外换热器的[火用]损失成为主要[火用]损失,此外在并联系统中电子膨胀阀的[火用]损失占比较大。
The pure electric vehicle integrated thermal management(ITM)system could effectively improve the energy efficiency of vehicles.However,the structure of the ITM system considering the thermal requirements of battery and cabin is complex.Aiming at the series and parallel configuration of the ITM system,the system simulation model is built based on AMESim software,and the performance of the two ITM systems is compared and analyzed from the perspective of thermodynamic energy and exergy analysis.The results show that:the coefficient of performance and exergy efficiency of the series system are significantly higher than those of the parallel system,with an average increase of 7.6%and 23.6%in the refrigeration mode and 13%and 7.6%in the heat pump mode,respectively.With the increase of compressor speed,the total exergy loss of components in the two systems increases significantly.The exergy loss of compressor and outdoor heat exchanger became the main exergy loss.In addition,the exergy loss of electronic expansion valve accounts for a large proportion in the parallel system.
作者
梁坤峰
王莫然
高美洁
吕振伟
徐红玉
董彬
高凤玲
LIANG Kunfeng;WANG Moran;GAO Meijie;LYU Zhenwei;XU Hongyu;DONG Bin;GAO Fengling(Vehicle&Transportation Engineering Institute,Henan University of Science and Technology,Luoyang 471003,Henan,China;School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2021年第S01期494-502,共9页
CIESC Journal
基金
国家自然科学基金项目(51876055,51706060,U1304521)
河南省科技攻关项目(212102210242)。
关键词
纯电动汽车
集成热管理
[火用]损失
锂离子电池
空调
pure electric vehicle
integrated thermal management
exergy loss
lithium-ion battery
air conditioning
