电动汽车二次回路热泵系统制热性能研究  

Study on Heating Performance of Secondary Loop Heating Pump for Electric Vehicle

作　　者：兰娇 苏林[1] 呼延吉 李康[1] 方奕栋[1] LAN Jiao;SU Lin;HU Yanji;LI Kang;FANG Yidong(University of Shanghai for Science and Technology, Shanghai 200093, China;Yan Qing Power Technology Co., Ltd., Shanghai 201318, China)

机构地区：[1]上海理工大学,上海200093 [2]延擎动力科技(上海)有限公司,上海200093

出　　处：《制冷技术》2018年第5期41-45,共5页Chinese Journal of Refrigeration Technology

基　　金：上海市重点学科建设项目(No.S30503)

摘　　要：电动汽车的发展给空调系统带来了挑战。冬天供暖时没有发动机的余热,一般采用PTC(Positive Temperature Coefficient)加热器,高能耗极大影响了电动汽车续航里程。同时,GWP(Global Warming Potential)大于150的制冷剂面临着被替换,而新型制冷剂(如R1234yf或R152a)具有可燃性,CO_2在高浓度时具有窒息性。因此设计空调热泵系统时,应避免这些制冷剂与乘员舱有直接的接触。本文设计了一个二次回路空调热泵系统,以压缩机转速和室内侧进风风量为变量,研究了系统的制热性能。实验结果表明:与450 m^3/h风量相比较,风量为350 m^3/h时的制热量和出风温度分别提高了16%和22%。压缩机转速的变化对水冷板式冷凝器出口温度几乎没有影响。There is a new challenge about air conditioning system for electric vehicle. On one hand, no engine waste heat can warm cabin, instead, PTC (Positive Temperature Coefficient) heater is always used, which reduce driving distance seriously. On the other hand, the refrigerant with GWP (Global Warming Potential) larger than 150 will be replaced. The new refrigerants are at risk of flammable (such as R1234yf or R152a). Since CO 2 is asphyxiating gas at high concentrations, avoiding above refrigerants in touch with cabin directly is necessary when designing an air conditioning heat pump system. In this study, a heat pump air conditioning with secondary loop for electric vehicle was set up, and the heating characteristics were operated under various test conditions of compressor speed and indoor inlet volume flow rate. Test results show that, as the inlet volume flow rate decreases from 450 m 3 /h to 350 m 3 /h, the heating capacity and outlet air temperature increases by 16% and 22%, respectively. The change of the compressor speed has little effect on the outlet temperature of the water cooled plate condenser.

关 键 词：电动汽车 二次回路热泵系统 制热 

分 类 号：U469.72[机械工程—车辆工程]