Heating performance characteristics of CO2 heat pump system for electrical vehicle in a cold climate

被引：106
作者：
Wang, Dandong [1 ]
Yu, Bingbing [1 ]
Hu, Jichao [1 ]
Chen, Liang [1 ]
Shi, Junye [1 ,2 ]
Chen, Jiangping [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Inst Refrigerat & Cryogen, Shanghai, Peoples R China
[2] Shanghai High Efficient Cooling Syst Res Ctr, Shanghai, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2018年 / 85卷
关键词：
Electrical vehicle; Heat pump; CO2; refrigerant; Transcritical; Heating performance; AIR-CONDITIONING SYSTEM; SUPERMARKET REFRIGERATION SYSTEMS; FUEL-CELL VEHICLES; EXCHANGERS; ENERGY; RANGE; R134A; CYCLE;
D O I：
10.1016/j.ijrefrig.2017.09.009
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This study investigated the heating performance characteristics of a CO2 heat pump system for an electrical vehicle in a cold climate. Experimental tests evaluated the effects on system performance of outdoor temperature, outdoor air velocity, indoor temperature, indoor air flow rate, compressor speed, and EXV opening. The results of heating experiments when both the indoor and outdoor temperatures were -20 degrees C showed a coefficient of performance (COP) of 3.1 and a heating capacity of 3.6 kW. The COP was 1.7 when the outdoor, indoor air inlet, and outlet temperature were -20 degrees C, 20 degrees C, and 40 degrees C, respectively. Therefore, the heat pump using CO2 refrigerant achieved good heating performance in a cold climate. Additionally, a new secondary loop heat pump was also compared with the conventional heat pump, and the test results show that use of the secondary loop heat pump reduced COP by 19%. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：27 / 41
页数：15
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