Research on the electric vehicle heat pump air conditioning system based on R290 refrigerant
Yue Huang, Xiuchun Wu, Jiahao Jing
Abstract
Based on the selection of refrigerant replacement for electric vehicle heat pump air-conditioning system, the ideal refrigerant replacement R290 is chosen as the working medium of the system. The feasibility and superiority of the electric vehicle heat pump air-conditioning system with water loop based on R290 refrigerant are verified by setting up a performance test platform. The experimental results show that the high temperature (55 °C) refrigeration capacity of the system is 5.77% higher than that of CO2 system, the COP of the system is 1.05 higher, and the isentropic efficiency of the system is more than 80% in the low temperature (- 20 °C) heating mode, the system has better and stable heating performance. This paper is beneficial to the further research and application of environment-friendly refrigerants, and further promote the development and research of heat pump air-conditioning system of efficiency electric vehicle.