流体机械2024，Vol.52Issue(6)：10-16,48,8.DOI:10.3969/j.issn.1005-0329.2024.06.002
R1234yf新能源汽车空调电子膨胀阀测试系统研制
Development of testing system for electronic expansion valve of R1234yf air conditioning of new energy vehicle
摘要
Abstract
In view of the problems of the current domestic electronic expansion valve testing systems,such as large deviation,small testing range,and high energy consumption,a new electronic expansion valve testing system for R1234yf new energy vehicle air conditioning was developed.The testing system utilizes refrigerant throttling to pressurize the gas phase through the compressor,and pressurize the liquid phase through a fluorine pump.The two phases were fully mixed before entering the condenser.The exhaust throttle valve was used to directly control the pressure behind the tested electronic expansion valve.Feasibility and thermal performance analysis of the testing system was conducted based on the national standard for automotive thermal management,and compared with the actual refrigeration method and the liquid ring method to test the condensation heat load and total power consumption of the system.The results show that the system utilizes the two-phase loop method to reduce the condensation heat after condensation,controls the pressure behind the measured valve through the exhaust throttle valve,cancels the evaporator,and improves system performance;Under the working fluid mass flow rate of 0.02～0.18 kg/s flowing through the tested electronic expansion valve,the condensation heat load of the system is reduced by 71.6%compared to the actual refrigeration method,37.9%compared to the liquid ring method,and the total power consumption is reduced by 63.7%～38.6%compared to the actual refrigeration method,but it is increased by 7.5%compared to the liquid ring method.This system can provide a feasible and energy-saving testing method for the performance testing of electronic expansion valves in the new energy vehicle air conditioning industry.关键词
新能源汽车空调/R1234yf制冷剂/电子膨胀阀/两相环法/性能分析Key words
air conditioning system for new energy vehicle/R1234yf refrigerant/electronic expansion valve/two-phase loop method/performance analysis分类
机械制造引用本文复制引用
陈剑云,李征涛,黄超,高磊,马林泉,彭家驹,周宇游..R1234yf新能源汽车空调电子膨胀阀测试系统研制[J].流体机械,2024,52(6):10-16,48,8.基金项目
国家自然科学基金项目(51876130) （51876130）
上海市自然科学基金项目(20ZR1438600) （20ZR1438600）
