The effects of little of lubricant in CO_2 on the performance of compressor, expander gas-cooler and evaporator were analyzed, and the model of supercritical heat transfer was also proposed.
最后对工质CO_2夹带的微量PAG对压缩机、膨胀机、气体冷却器和蒸发器的性能影响分别进行了分析，并提出了超临界换热分析模型。
It is illustrated that discharge temperature of gas cooler, efficiency of expander and degree of superheat at the inlet of compressor can exert more influence on the optimum high pressure.
结果表明，气体冷却器出口温度、过热度和膨胀机效率对最优高压压力的影响较为明显。
It is illustrated that discharge temperature of gas cooler, efficiency of expander and degree of superheat at the inlet of compressor can exert more influence on the optimum high pressure.
结果表明，气体冷却器出口温度、过热度和膨胀机效率对最优高压压力的影响较为明显。
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