低温复叠系统制冷工质替代研究Study on Alternative Refrigerant for Low Temperature Casecade Refrigeration System
王维,吴兆林,周志钢,马勇
WANG Wei,WU Zhao-lin,ZHOU Zhi-gang,MA Yong(University of Shanghai for Science and Technology
摘要(Abstract)：
对替代工质R404A/R23和原工质R22/R13进行了热物性及系统运行参数方面的比较分析,完成了一套采用替代工质R404A/R23的复叠制冷试验机组的系统设计,并对R404A/R23复叠系统进行了试验验证。结果表明,尽管使用替代工质R404A/R23的系统较原系统的制冷量略有降低,但其它系统运行参数均优于R22/R13系统,系统的可靠性大大提高。
The alternative refrigerant R404A/R23 and the original one R22/R13 is compared in thermophysical properties and refrigeration operating parameters,and a set of cascade refrigeration unit using R404A/R23 was designed and tested.The result shows that although system cooling capacity using alternative R404A/R23 slightly decreased,other operation parameters such as temperature and pressure are better than the original system.The reliability of the system has been greatly increased.
关键词(KeyWords)：
复叠制冷循环;R404A/R23;替代制冷工质
casecade refrigeration cycle;R404A/R23;alternative refrigerant
基金项目(Foundation): 上海市重点学科资助项目(T0503)
作者(Author):
王维,吴兆林,周志钢,马勇
WANG Wei,WU Zhao-lin,ZHOU Zhi-gang,MA Yong(University of Shanghai for Science and Technology
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