| 摘要: |
| 为增加空气源热泵运行的稳定性及提高其性能系数，本文提出了以R134a为工质的涡旋压缩机闪蒸器补气制冷/热泵系统。搭建了实验台对压缩机排气温度、功耗、制冷量、制热量及制冷、制热性能系数进行研究。结果表明：当冷凝温度为45 ℃，蒸发温度为﹣20~0 ℃时，与采用相同工质的单级系统相比，补气系统的排气温度降低了6.2 ℃，功耗增加1.4%~2.8%，制冷量和制冷COPc分别提高19.8%和17.6%，制热量和制热COPh分别提高15.3%和13.2%。 |
| 关键词: R134a 补气 制热性能 COP |
| DOI： |
|
|
| 基金项目:北京市自然科学基金资助项目（3154032）。 |
|
| Experimental Research on Quasi Two-stage Compression Heat Pump with Flash Tank Vapor-injection Using R134a |
|
Chai Yupeng1, Ma Guoyuan1, Xu Shuxue1, Ding Ruochen1, Yu Lihua2
|
| (1.College of Environmental and Energy Engineering, Beijing University of Technology;2.National Institute of Metrology) |
| Abstract: |
| In order to improve the stability and coefficient of performance of the air source heat pump, a scroll compressor refrigeration / heat pump system with flash tank was proposed using R134a, and the experiment platform was built. The compressor’s discharge temperature, power input, cooling capacity, heating capacity, coefficient of performances of the refrigeration/heat pump system were studied. Results showed that, under the condition of condensing temperature 45 ℃ and evaporating temperature from ﹣20 ℃ to 0 ℃, the discharge temperature of the vapor injection system was 6.2 ℃ lower than that of the single stage compression system, power input increased only 1.4% to 2.8%, the cooling capacity and cooling COPc are 19.8% and 17.6% higher than that of the single stage system, the heating capacity and heating COPh are 15.3% and 13.2% higher, respectively. |
| Key words: R134a vapor injection heating performance COP |
