纯电动公交车热泵型空调系统设计与实验研究.pdfVIP

第31 卷第2 期 制冷与空调 Vol.31 No.2 2017 年4 月 Refrigeration and Air Conditioning Apr. 2017.118～121 文章编号：1671-6612 （20 17 ）02-118-04 纯电动公交车热泵型空调系统设计与实验研究 张 伟 李红旗 郑 新 （北京工业大学环境与能源工程学院 北京 100124 ） 【摘 要】 针对纯电动公交车设计了一套热泵型空调系统，并对其运行特性进行了实验研究，分析了环境温 度、压缩机转速和室内外风速对制冷/制热量、COP/EER 和排气温度的影响。研究结果表明，设 计的热泵型空调系统具有较好的制冷/制热性能，在制冷工况转速为2700r/min 时COP 最高，而 制热工况下EER 随转速增加而减小。在制热工况下，EER 随室外风机转速增加而降低，因此较 低的室外风机转速更有利于系统的节能。 【关键词】 纯电动公交车；热泵空调；实验研究 中图分类号 TB61 文献标识码 A Design and Experimental Study of a Heat Pump A/C System in Pure Electric Bus Zhang Wei Li Hongqi Zheng Xin ( Beijing University of Technology, Beijing, 100124 ) 【Abstract 】 A heat pump air conditioning system is designed for pure electric bus, and its operating characteristics are studied. The cooling/heating capacity, the coefficient of performance (COP)/EER and the exhaust temperature varied with the ambient temperature, the compressor speed and the wind speed are analyzed. The results show that the heat pump air-conditioner system designed in this paper has better cooling/heating performance; the COP is highest when the speed of compressor is 2700r/min in refrigeration conditions, but the EER is lower with the speed increases in heating conditions. In heating conditions, when the speed of outdoor fan is increaser, the EER is lower, so the lower speed of outdoor fan is more conducive to energy-saving. 【Keywords 】 pure electric bus; heat pump air-conditioner; experimental study 0 引言 该系统供热能效低，大大影响了纯电动公交车的 随着节能减排任务的推进和雾霾天气的突