| 摘要: |
| 为提升普通蒸汽压缩式制冷/热泵系统的性能，提出了一种单机双腔并联压缩式系统。通过建立系统循环的理论模型，分析出制冷和制热性能随着从级吸气压力，主、从级容积比的变化规律。结果显示，与普通单级压缩系统相比，双工作腔并联系统的制冷量、制热量分别提高29.6%和29.2%；制冷EER、制热COP分别提高8.0%和2.8%；排气温度降低3～4℃。最佳从、主级容积比的范围为0.08～0.12。 |
| 关键词: 双级压缩 并联 容积比 性能系数 热泵 |
| DOI： |
| 投稿时间：2012-11-06
|
| 基金项目:国家自然科学基金（51076003)和中国博士后科学基金（71005014201102）资助项目 |
|
| Simulation Study on Single-Machine Two-chamber in-parallel Compression Refrigeration/Heat Pump System |
|
Xu Shuxue, Ma Guoyuan, Liu Qi, Liu Zhongliang
|
| (Beijing University of Technology) |
| Abstract: |
| In order to improve the working performance of vapor compression refrigeration/heat pump system, a new system named single machine two-chamber in-parallel compression refrigeration/heat pump system was provided. An analysis model was set according to the theory of thermodynamics. The variation of cooling and heating performance with side-stage suction pressure and the most favorable volume ratio of side-stage to main-stage have been calculated. The results show that, compared with conventional single-stage compression system, cooling and heating capacity can increase 29.6% and 29.2%; cooling EER and heating COP can increase 8.0% and 2.8%; the discharge temperature decrease 3～4℃. The most favorable volume ratio of side-stage to main-stage is 0.08～0.12. |
| Key words: double-stage compression parallel volume ratio cooling/heating performance heat pump |
