Heating performance characteristics of CO2 heat pump system for electrical vehicle in a cold climate
Heating performance characteristics of CO2 heat pump system for electrical vehicle in a cold climate
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寒冷气候下电动汽车CO2热泵系统制热性能特性
DOI:
10.1016/j.ijrefrig.2017.09.009
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发表时间:
2018
影响因子:
3.9
通讯作者:
Chen Jiangping
中科院分区:
文献类型:
--
作者:
Wang D;ong;Yu Bingbing;Hu Jichao;Chen Liang;Shi Junye;Chen Jiangping
This study investigated the heating performance characteristics of a CO2heat 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 °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 °C, 20 °C, and 40 °C, respectively. Therefore, the heat pump using CO2refrigerant 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%.
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DOI:
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International Journal of Refrigeration-revue Internationale Du Froid
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International Journal of Refrigeration-revue Internationale Du Froid
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