| 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%。 |
| 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 |
| DOI： |
| 投稿时间：2017-04-19
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| 基金项目:合肥工业大学博士学位专项资助基金（JZ2016HGBZ0748）项目资助。 |
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| 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) |
| 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 conditions. The experimental results show that the discharge temperature of the compressor increases with the decrease of ambient temperature. Under all five conditions, the discharge temperature of the single-stage compression scroll compressor is higher than that of the quasi-two-stage scroll compressor. In particular, when the ambient temperature reaches ﹣7℃, the discharge temperature of the quasi-two-stage compression scroll compressor is 10 ℃, less than that of the single-stage compressor. In low-temperature conditions, compared with the single-stage compression scroll compressor, the mass flow rate of the quasi-two-stage compression scroll compressor, the system heat capacity and heating coefficient of performance (COPh) improve by 12.9%–17.4%, 7.3%–8.3% and 7.6%–8.2% respectively. |
| Key words: scroll compressor electric vehicle air-conditioning quasi two-stage compression heat pump performance experiment |
