低温环境下纯电动客车热泵空调系统制热性能试验研究  

Experimental study on heating performance of pure electric bus heat pump air conditioning system under low temperature environment

作　　者：周光辉[1,2] 白军琴 李海军 范雅[1,2] 王春艳 余壮 ZHOU Guanghui;BAI Junqin;LI Haijun;FAN Ya;WANG Chunyan;YU Zhuang(School of Energy&Environment,Zhongyuan University of Technology,Zhengzhou 450007,China;New Energy Vehicle Integrated Air Conditioning Technology of Henan Province Engineering Laboratory,Zhengzhou 450007,China)

机构地区：[1]中原工学院能源与环境学院,郑州450007 [2]新能源汽车一体化空调技术河南省工程试验室,郑州450007

出　　处：《流体机械》2021年第9期13-19,共7页Fluid Machinery

基　　金：国家自然科学基金项目(51676201);河南省高等学校供热空调重点学科开放实验室研究基金项目(2017HAC201)。

摘　　要：针对纯电动客车热泵空调系统在低温环境下制热量较低、系统制热性能衰减严重等问题,搭建了基于R410A的纯电动客车热泵空调系统试验台。试验研究了车外风机风量、环境温度及压缩机转速的变化对系统供热性能的影响。试验结果表明:车外环境温度由7℃降到-20℃时,系统制热量下降50.4%;采用补气技术后,系统COPh仍可达到1.46,可见该系统在低温制热方面有较高的性能;压缩机转速从3000 r/min增至5000 r/min时,制热量提升74.4%,车外风量由60%增至100%时,制热量上升3%。For the problems of low heating capacity and serious attenuation of system heating performance of pure electric bus heat pump air conditioning system under low temperature environment,an experimental platform of pure electric bus heat pump air conditioning system based on R410A was built.The influence of air volume,ambient temperature and compressor speed on the heating performance of the system was studied experimentally.The experimental results show that when the ambient environment temperature is 7~-20℃,the heating capacity of the system is reduced by 50.4%,after adoption of air replenishment technique,the system COPh still can reach 1.46,so it can be seen the system has higher performance in low temperature heating,compressor speed is increased from 3000 r/min to 5000 r/min,the heating capacity is increased by 74.4%,and the heating capacity is increased by 3%when the air volume outside the bus is increased from 60%to 100%.

关 键 词：纯电动客车 补气技术 全微通道 制热性能 

分 类 号：TH3[机械工程—机械制造及自动化]