自复叠制冷系统工质成分分析  

Composition analysis of auto-cascade refrigeration system

作　　者：芮胜军[1,2] 张华[1] 陈曦[1] 武卫东[1] 

机构地区：[1]上海理工大学制冷技术研究所,上海200093 [2]河南科技大学车辆与动力工程学院,洛阳471023

出　　处：《低温与超导》2013年第3期74-77,共4页Cryogenics and Superconductivity

基　　金：国家自然科学基金项目(51176124);上海市优秀学科带头人项目(10XD1403100)资助

摘　　要：分析了多级自动复叠制冷系统中非共沸混合工质的运行特点。针对系统运行过程中由于相分离、积液和工质积存等原因引起的混合工质组分发生变化的问题,在气相色谱仪的辅助下,对多级自动复叠制冷系统中混合工质实际运行成分进行取样、检测以及分析。通过对运行工质不同位置点的采样分析,发现自动复叠制冷系统实际运行时各个位置的组分含量与理论分析的差别较大。Non -azeotropic mixed - refrigerant operating characteristics of multi - stage auto - cascade refrigeration system were analyzed. Due to the phase separation, effusion and refrigerant accumulation, the problem of mixed - refrigerant composition change in system during operation was studied. Actual operation composition of mixed - refrigerant of multi - stage auto - cascade refrigeration system was sampled, detected and analyzed in the help of gas chromatography. Based on the sampling analysis of different operation points, it is found that the component content of the actual operation vary greatly with the theoretical analysis.

关 键 词：自复叠制冷 非共沸混合工质 气象色谱仪 运行组分 

分 类 号：TB65[一般工业技术—制冷工程]