作　　者： ; ; ; ;

机构地区： 北京工业大学

出　　处： 《制冷学报》 2013年第6期1-4,34,共5页

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

领　　域： [一般工业技术]