摘要
对带中间冷却器的双级压缩制冷(TCEI)循环和带闪发器的双级压缩制冷(TCFI)循环进行了热力学分析与比较。结果表明:TCFI循环的最佳中间压力和最佳排气压力低于TCEI循环。在常规空调工况下,TCFI循环的COP高于TCEI循环。在蒸发温度从-10℃变化到10℃时,TCFI循环和TCEI循环的COP相对基本循环平均提高幅度分别为32.3%和18.7%。
The thermodynamic analysis and comparison of two-stage compression cycle with external intercooler （TCEI） and two-stage compression cycle with flash intercooler （TCFI） is presented. The results show that the optimum intermediate pressure and the optimum gas cooler pressure of the TCFI cycle are lower than that of the TCEI cycle. The cycle COP of the TCFI is higher than that of the TCEI cycle in the normal condition of air conditioning systems. The optimum COP of TCFI cycle and TCEI cycle shows averagely 32.3% and 18.7% improvement over that of the base cycle respectively when the evaporating temperature varies from-lO ℃ to 10 ℃.
出处
《流体机械》
CSCD
北大核心
2015年第8期73-77,共5页
Fluid Machinery
基金
唐山市科技计划项目(13130299b)
河北省自然科学基金项目(E2014209044)
关键词
CO2跨临界制冷循环
双级压缩
性能系数
中间冷却器
CO2 transcritical refrigeration cycle
two-stage compression
coefficient of performance
intercooler
