NH_3/CO_2复叠式制冷循环的分析与优化  

Analysis and Optimization of NH_3/CO_2 Cascade Refrigeration Cycle

作　　者：靳光亚[1] 谢英柏[1] 刘春涛[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《电力科学与工程》2013年第1期69-73,共5页Electric Power Science and Engineering

基　　金：中央高校基本科研业务费项目(09MG32)

摘　　要：建立了NH3/CO2复叠式制冷循环的理论分析,结果表明:存在最优蒸发-冷凝器的中间温度使循环的性能系数达到最大,带膨胀机同时过冷NH3/CO2复叠式制冷循环的理论COP优于传统R22/R13复叠循环和NH3双级循环,回热器的换热效果直接影响系统性能。In this paper, theoretical analysis on NH3/CO2 cascade refrigeration cycle is established. Results show that there is an optimum medium temperature of the evaporative condenser to achieve the maximum COP. The performance of NH3/CO2 cascade expander cycle with super-cooling is better than traditional R22/R13 cascade cycle and NH3 two-stage compression cycle ; the heat exchange efficiency of regenerator direct influences system performance,

关 键 词：跨临界CO2制冷循环 实验研究 膨胀机 双级压缩 复叠式制冷循环 

分 类 号：TB65[一般工业技术—制冷工程]