论文部分内容阅读
我院一台美国产ＵＣＤ２０００型超低温冰箱，该冰箱采用复选式制冷方式，即将两个单级压缩制冷系统覆选在一起，其中一个系统为高温部分，其工质为Ｆ—１２，另一系统为低温部分，其工质为Ｆ－１３，高温部分的蒸发器与低温部分的冷凝器覆迭在一起，构成蒸发冷凝器，蒸发冷凝
In our institute, a UCD2000 ultra-low temperature refrigerator produced in the United States adopts a multi-selection refrigeration method, ie, two single-stage compression refrigeration systems are selected together. One of the systems is a high-temperature part, and its working medium is F-12. The system is a low-temperature part, and its working fluid is F-13. The evaporator of the high temperature part and the condenser of the low temperature part are overlaid together to form an evaporative condenser and evaporative condensation.