单机双腔并联压缩式制冷/热泵系统的性能模拟研究  

Simulation Study on Single-machine Two-chamber In-parallel Compression Refrigeration/Heat Pump System

作　　者：许树学[1] 马国远[1] 刘琦[1] 刘中良[1] 

机构地区：[1]北京工业大学,北京100124

出　　处：《制冷学报》2013年第6期1-4,34,共5页Journal of Refrigeration

基　　金：国家自然科学基金(51076003);中国博士后科学基金(71005014201102)资助项目~~

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。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.

关 键 词：双级压缩 并联 容积比 性能系数 热泵 

分 类 号：TB612[一般工业技术—制冷工程]