Simulation of Air Source Heat Pump with Refrigerant Injection for Heating Operation

作     者：Liu Haibo Shao Shuangquan Ma Guoyuan Fan Boyuan 

作者机构：College of Environmental and Energy EngineeringBeijing University of Technology CAS Key Laboratory of CryogenicsTechnical Institute of Physics and Chemistry 

出 版 物：《Transactions of Nanjing University of Aeronautics and Astronautics》 (南京航空航天大学学报（英文版）)

年 卷 期：2018年第35卷第5期

页      面：739-748页

核心收录：

学科分类：080705[工学-制冷及低温工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the National Key Research and Development Program of China(No.2016YFB0601602) National Natural Science Foundation of China(No.51676199) 

主　　题：heat pump refrigerant injection air conditioning simulation electric vehicle(EV) 

摘      要：An air source heat pump(ASHP)with refrigerant injection is proposed for the air conditioning system of electric vehicles(EVs),especially for efficient heating in cold winter,when there is no wasted heat of *** simulation model is built with the framework of two-phase fluid network,where the compressor is separated as two compressors and the economizer is treated as two heat exchangers in the injection path and the main refrigerant *** the validated simulation model,the heating performance is analyzed,and the results show that the coefficient of performance(COP)of ASHP with refrigerant injection is higher than 1.4 and the discharge temperature is less than 100℃ when the outdoor temperature is-20℃.The above performance ensures that the air conditioning system and EVs can operate normally with high efficiency even in the cold winter,which is much helpful for the practicability of EVs.