采用涡旋压缩机的电动汽车空调准双级压缩热泵性能实验研究

作者:唐景春 ;李晨凯 ;叶斌 ;晓磊 刊名:制冷学报 上传者:唐英玲

【摘要】为了解决电动汽车空调系统冬季采暖问题和抑制冬季恶劣工况下压缩机排气温度过高状况,本文采用补气增焓技术,设计了电动汽车准双级压缩热泵空调系统,构建了电动汽车空调准双级涡旋式压缩机性能测试实验台。采用5种不同室外环境温度工况,分别测试了单级和准双级涡旋式压缩机。结果表明:压缩机的排气温度随环境温度的降低而升高。5种工况下,单级涡旋压缩机的排气温度均高于准双级涡旋压缩机的排气温度,尤其在环境温度为-7℃时,准双级涡旋压缩机的排气温度降低了10℃。与单级涡旋压缩机相比,在低温工况下,准双级涡旋压缩机的排气质量流量提高了12.9%~17.4%,系统制热量提高了7.3%~8.3%,制热性能系数COPh提高了7.6%~8.2%。

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第39卷第1期 2018年2 月 制冷学报 Journal of Refrigeration Vol. 39,No. 1 February, 2018 文章编号:〇253-4339(2018) 01 -0034-06 doi:10. 3969/j. issn. 0253 - 4339. 2018. 01. 034 采用涡旋压缩机的电动汽车空调准双级压缩热泵性能实验研究 唐景春李晨凯叶斌孟晓磊 (合肥工业大学汽车与交通工程学院合肥230009) 摘 要 为了解决电动汽车空调系统冬季采暖问题和抑制冬季恶劣工况下压缩机排气温度过高状况,本文采用补气增焓技术, 设计了电动汽车准双级压缩热泵空调系统,构建了电动汽车空调准双级涡旋式压缩机性能测试实验台。采用5 种不同室外环境 温度工况,分别测试了单级和准双级涡旋式压缩机。结果表明:压缩机的排气温度随环境温度的降低而升高。5 种工况下,单级 涡旋压缩机的排气温度均高于准双级涡旋压缩机的排气温度,尤其在环境温度为- 7 t 时,准双级涡旋压缩机的排气温度降低 了 10丈。与单级涡旋压缩机相比,在低温工况下,准双级涡旋压缩机的排气质量流量提高了 12.9% ~17.4%,系统制热量提高 了 7.3% ~8.3%,制热性能系数 COPh 提高了 7.6% ~8.2%。关 键 词 涡旋压缩机;电动汽车空调;准双级压缩;热泵;性能实验 中图分类号:TB652; U463. 85 +1; U469. 72 文献标识码:A Experimental Study on Performance of Heat Pump Cycle of Quasi Two - stage Compression for Electric Vehicle Air-conditioning with Scroll Compressor Tang Jingchun Li Chenkai Ye Bin Meng Xiaolei (School of Automobile and Transportation Engineering, Hefei University of Technology, Hefei, 230009, China) Abstract To solve the problem of heating in electric vehicle air-conditioning systems and suppressing the high discharge temperature of the compressor in winter, a quasi-two-stage compression heat pump system for electric vehicles has been designed using flash tank vapor injection. Additionally, an experimental platform for testing the performance of a quasi-two-stage compression scroll compressor has been built. Using this platform, single-stage and quasi-two-stage compression scroll compressors have been tested under five different outdoor temperature condit

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