制冷学报2017，Vol.38Issue(1)：29-33,5.DOI:10.3969/j.issn.0253-4339.2017.01.029
电动汽车热泵空调复合除霜特性的实验研究
Experimental Study of the Characteristic of Composite Defrosting for Heat Pump Air Conditioner of Electric Vehicle
林洪良 1南金瑞 1乔名星 1刘练1
作者信息
- 1. 北京理工大学 北京电动车辆协同创新中心 北京 100081
- 折叠
摘要
Abstract
To solve the problem that frosting leads to lower efficiency of the heat pump air conditioner for electric vehicle in the heating process, a new method of composite defrosting is proposed after analyzing the deficiency of the existing defrosting method. At the beginning of the defrosting, firstlyenter the bypass defrost stage. Then reverse cycle defrost stagetimelyaccording to the defrost state. An electric bus air conditioning system with a rated power 8. 0 kW was transformed,and the comparative test was carried out in the simulated environment of the outdoor at (2 ± 0. 5) ℃, the indoor at (20 ± 0. 5) ℃ and the relative humidity of (80 ± 5)%. The change of the compressor suc-tion and discharge pressure, the outdoor heat exchanger temperature, indoor temperature and power consumption were measured. The ex-perimental results indicated that, compared with the method of reverse cycle defrosting, the compressor shock of discharge and suction was reduced, the fluctuation of indoor temperature was decreased and energy consumption decreased by 8. 13%;compared with the method of hot-gas bypass defrosting, the time of defrosting was decreased by 60 s and energy consumption decreased by 6. 56%.关键词
除霜/热泵/电动汽车Key words
defrosting/heat pump/electric vehicle分类
建筑与水利引用本文复制引用
林洪良,南金瑞,乔名星,刘练..电动汽车热泵空调复合除霜特性的实验研究[J].制冷学报,2017,38(1):29-33,5.
