Basic Process Knowledge (Multiple Choice) 20180912
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The throttling process of the refrigerant as it passes through the expansion valve is the same before and after. A. Temperature B. Specific volume C. Specific enthalpy D. Specific entropy Hint: During the process in which the refrigerant passes through the expansion valve, there is no mechanical energy exchange with the surroundings, and the changes in heat absorbed and specific kinetic energy are also minimal. According to the first law of thermodynamics for open systems, the slight increase in specific enthalpy can be ignored.
A. Temperature #Reply quickly here#