| 摘要: |
| 本文搭建了带水环路的R290电动汽车热泵空调实验台，研究了不同工况下系统的制冷性能和制热性能。实验结果表明:35℃常规制冷工况时,压缩机转速从1 800r/min增加6 600r/min,系统制冷量从1 789W提升至4 027W，而系统COP从3.65下降至1.82;45℃高温制冷工况时,压缩机转速从2 700 r/ min增加到4 500 r/min, 系统制冷量从1 973 W提升至3 031 W,而系统COP从2.10下降至1. 88;在-20 ℃/20 ℃低温制热工况.压缩机转速6 000 r/min时,系统制热量为2 911 W ,对应的系统COP为1.80;在-25 ℃/20 ℃低温制热工况、压缩机转3600r/min时,对应的系统制热量为1 658 W、系统COP为2.16。同时发现采用水环路的系统形式，提高了系统的安全可靠性,但与常规循环系统相比，系统性能存在-定程度的衰减，制冷量衰减300~500 W。制热量衰减200~400 W。 |
| 关键词: 热泵 电动汽车 R290 系统性能 |
| DOI： |
| 投稿时间：2020-02-06 修订日期：2020-06-05
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| 基金项目:国家自然科学基金(51676201),国家重点研发计划(2018YFB0105900)资助项目。 |
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| Cooling and Heating Performance of an R290 Heat Pump System for Electric Cars |
|
Huang Guangyan1,2, Zou Huiming1,2, Tang Mingsheng1,2, Tian Changqing1,2, Wu Jiang1, Yu Weibin1
|
| (1.Technical Institute of Physics and Chemistry, CAS;2.University of Chinese Academy of Sciences) |
| Abstract: |
| Responding to the applied air-conditioning requirements for electric cars, an experimental bench for the R290 heat pump system with a secondary medium cycle was established. The cooling and heating performances of the system were tested under various working conditions. As the compressor speed increases from 1800 r/min to 6600 r/m, the cooling capacity increases from 1789 to 4027 W under standard conditions (35 ℃), while the COP decreases from 3.65 to 1.82. As the compressor speed increases from 2700 r/min to 4500 r/min, the cooling capacity increases from 1973 to 3031 W under extremely warm conditions (45 ℃), while the COP decreases from 2.10 to 1.88. Under cold conditions (?20 ℃), the heating capacity of the system reaches 2911 W at 6000 r/min, and the corresponding COP is 1.80. Under extremely cold conditions (?25 ℃), the heating capacity reaches 1685 W at 3600 r/min, and the COP is 2.16. Meanwhile, the system adopted the form of secondary heat transfer, which improved the safety and reliability. However, compared with the primary circuit, the cooling capacity is attenuated by 300–500 W, and the heating capacity is attenuated by 200–400 W. |
| Key words: heat pump eletric vehicle R290 performance of the system |
