TY - JOUR
TI - Influence of electronic expansion valve on heating performance of vehicle heat pump system
AU - Su Zhiyong
AU - Li Haijun
AU - Liu Lei
AU - Qin Xingduo
AU - An Tong
AU - Zhao Chaoyue
JN - Thermal Science
PY - 2023
VL - 27
IS - 3
SP - 1819
EP - 1826
PT - Article
AB - In this paper, based on the regulation characteristics of electronic  expansion valve, an experimental platform is built for studying a vehicle  heat pump system. Under an ultra-low temperature condition of -10°C, the  influence of the super-heat setting value of the electronic expansion valve  on the main heating performance parameters of the system is analyzed. The  results show that when the superheat setting value of the main valve  increases from 2 K to 8 K, the discharge temperature of the compressor  increases, the heating capacity of the system decreases by 12.6%, and the  compressor power decreases by 15.9%. When the superheat setting value of  make-up valve increases from 15 K to 30 K, the discharge temperature of the  compressor increases, the heating capacity of the system decreases by  17.7%, and the compressor power decreases by 22.0%.