对涡旋膨胀机真实气体理想(等熵)膨胀过程进行了理论分析，提出了涡旋膨胀机真实气体设计压比的概念和计算方法，并进行了实验研究。
The concept of design compression ratio of real gas in a vortex expander and computational method are put forth. The corresponding experimental study has been done.
当气体从高压到低压在等熵下膨胀时所产生的气体温度的变化。
The change in gas temperature that occurs when the gas is expanded at constant enthalpy from a high to low pressure.
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