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
Chen Jiangping
中科院分区:
工程技术2区
文献类型:
--
作者:
Wang D;ong;Yu Bingbing;Hu Jichao;Chen Liang;Shi Junye;Chen Jiangping

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本研究研究了寒冷气候下电动汽车二氧化碳热泵系统的加热性能特征。实验测试评估了室外温度、室外风速、室内温度、室内空气流量、压缩机转速和EXV开度对系统性能的影响。室内和室外温度均为- 20℃时的加热实验结果表明,性能系数(COP)为3.1,热容量为3.6 kW。室外进风口温度为- 20℃,室内进风口温度为20℃,室外出风口温度为40℃时,COP为1.7。因此,采用co2制冷剂的热泵在寒冷气候下取得了良好的制热性能。此外,还对新型二次循环热泵与传统热泵进行了对比,试验结果表明,使用二次循环热泵可使COP降低19%。
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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