| 摘要: |
| 研究了带闪蒸型经济器风冷螺杆热泵机组对制热性能的影响，理论分析了补气压力的变化对机组制热性能的影响。研究表明，带闪蒸型经济器热泵螺杆机组制热量随经济器的补气压力的减小而增大，压缩机功率也随经济器的补气压力的减小而增大，压缩机的COP随着经济器的补气压力的升高先升高再降低，存在最佳效率的补气压力点。实验测试了比最佳补气压力点偏高的经济器补气压力对机组性能的影响，理论计算结果和实测数据吻合良好。 |
| 关键词: 闪蒸型经济器 风冷螺杆热泵机组 经济器补气压力 |
| DOI： |
| Received:December 26, 2012 |
| 基金项目: |
|
| Experimental Study on Performance of Air-cooled Screw Heat Pump with Flash Tank Economizer |
|
Qin Huanghui
|
| (Nantong Shipping College) |
| Abstract: |
| The effects of flash tank economizer on performance of air source screw heat pump are studied. The effect of economizer vapor injection pressure on unit performance is theoretically analyzed. The study shows that the lower economizer vapor injection pressure is, the higher heating capacity and compressor power of screw heat pump with flash type economizer are. The COP of heat pump first increased and reduced again with the increase of the economizer vapor injection pressure. There is an optimized point. The experiment was carried out to investigate the effects of flash tank economizer on performance of heat pump at near optimum economizer vapor injection pressure. The simulation results are in good agreement with those of the experiment. |
| Key words: flash tank economizer air-cooled screw heat pump economizer vapor injection pressure |
