Why is it necessary to control the temperature in front of the expander?
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Is it mainly out of fear that liquid carried by the expander will cause impact on the turbine? But it’s mainly fear of liquid in front of the machine, right? But the temperature before the machine is -115. The pressure before the machine is 2.8 MPa; is it prone to liquid carryover?
One should not draw conclusions on the issues to be discussed in advance; controlling the temperature before the expander is mainly done from the perspective of efficiency, while in actual practice, it is more appropriate to consider the superheat of the temperature after the expander. The former discusses how to improve the efficiency of expanders; however, the higher the efficiency, the higher the outlet temperature becomes, which does not meet the requirements for equipment operation. The latter requires that the degree of superheat of the expander be as small as possible; the colder the air temperature, the better. As long as it is not lower than the saturation temperature corresponding to the outlet pressure (i.e., when the degree of superheat is less than 0), no liquid will be carried along. Liquid will appear only if the temperature in front of the machine is lower than the corresponding saturation pressure. This phenomenon is almost impossible. For reference.