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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。
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