可再生能源2024，Vol.42Issue(5)：612-619,8.
电动汽车CO2热泵空调系统优化及制冷性能分析
Optimization and cooling performance analysis of CO2 heat pump air conditioning system for electric vehicle
摘要
Abstract
In order to improve the efficiency of CO2 cycle system for electric vehicle,a trans-critical CO2 system with regenerator and gas injection in the middle was constructed.The effects of Tgo,Pg,Pm,β,△T on EER,Qe and Tco were studied by simulation.The results show that Pgo and Pm,opt makes the EER reach the maximum value,and the relationship between the Popt and the Tgo.An increase in Tgo can degrade system performance,The performance of the system can be improved by increasing the amount of gas injection in the middle and the superheat of the regenerator,which can increase the EER by 15.64%and 6.07%,respectively,and the cooling capacity by 27.88%and 4.78%.The increase of the superheat of the regenerator will lead to the increase of the discharge temperature of the compressor,the gas injection in the middle can reduce the discharge temperature of the compressor,when the discharge temperature of the compressor is limited,the optimization ability of the regenerator to EER and cooling capacity can be increased by 203%and 173.87%.Compared with the basic trans-critical CO2 system,the optimized system can increase the EER and cooling capacity by 18.38%and 35.03%.关键词
热泵空调/中间补气/回热器/跨临界CO2循环Key words
heat pump air conditioning/gas injection in the middle/regenerator/trans-critical CO2 cycle引用本文复制引用
李江峰,李帅旗,宋文吉,冯自平..电动汽车CO2热泵空调系统优化及制冷性能分析[J].可再生能源,2024,42(5):612-619,8.基金项目
国家重点研发计划项目(2021YFE0112500). （2021YFE0112500）
