| 摘要: |
| 将带中间补气的单缸滚动转子式压缩机应用于空气源热泵系统，以解决低温工况下出现的制热量不足、能效偏低等问题。利用焓差室测试比较带中间补气的单缸滚动转子式压缩系统（单缸系统）与双缸滚动转子式压缩系统（双缸系统）、单级压缩系统在不同制热工况下的系统性能。实验结果表明：在室外温度高于﹣15 ℃时，单缸系统与单级压缩系统相比，其制热量增加幅度均大于12%，并随着室外温度的降低增加幅度逐渐增大；单缸系统的制热量与COP均大于双缸系统，其提升幅度的平均值分别为2.29%、1.94%；在室外温度低于﹣15 ℃时，单级压缩系统因排气温度过高无法正常工作，双缸系统的制热量与COP均大于单缸系统，其提升幅度的平均值分别为4.5%、9.42%；验证了单缸系统更适用于室外温度高于﹣15 ℃的工况，双缸系统更适用于室外温度低于﹣15 ℃的工况。 |
| 关键词: 空气源热泵系统 中间补气 滚动转子式压缩机 制热性能 |
| DOI： |
|
|
| 基金项目: |
|
| Experimental Research on Heating Performance of Rotary Compression System with Vapor Injection |
|
Jia Qinglei1, Feng Liwei1,2, Yan Gang1
|
| (1.Xi’an Jiaotong University;2.Guangdong Meizhi Compressor Co., Ltd.) |
| Abstract: |
| In this paper, the single-cylinder rotary compression system with vapor injection is applied in heat pump system to solve the problems of insufficient heating capacity and lower efficiency during lower ambient conditions. The system performances of single-cylinder rotary compression system with vapor injection (called single-cylinder system), dual-cylinder rotary compression system with vapor injection (called dual-cylinder system) and single stage compression system were comparatively tested under the different heating conditions in psychrometric room. The results show that the single-cylinder system has a higher heating capacity compared with single stage compression system when the outdoor temperature is above ﹣15 ℃, and the rates of increase is above 12%. The rate of increase is increased along with the decrease of ambient air temperature. The heating capacity and COP of single-cylinder system are higher than that of the dual-cylinder system, and the increasing ranges are 2.29%, 1.94% respectively. When the outdoor temperature is below ﹣15 ℃, single stage compression system would not operate normally due to the higher discharge temperature. The heating capacity and COP of dual-cylinder system are higher than that of the single-cylinder system, and the increasing ranges are 4.5%, 9.42% respectively. Therefore, the single-cylinder system is suitable for the conditions of outdoor temperature above﹣15 ℃, while the dual-cylinder system is suitable for the conditions of outdoor temperature below ﹣15 ℃. |
| Key words: heat pump system vapor injection rotary compressor heating performance |
