Evaluating Exergy
Refrigerant 134a vapor initially at 1 bar and 20°C fills a rigid vessel. The vapor is cooled until the temperature becomes −32°C. There is no work during the process. For the refrigerant, determine the heat transfer per unit mass and the change in specific exergy, each in kJ/kg. Comment. Let T0 = 20°C, p0 = 0.1 MPa and ignore the effects of motion and gravity.
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