Question: 8 - 9 0 Refrigerant - 1 3 4 a is converted from a saturated liquid to a saturated vapor in a closed system using

8-90 Refrigerant-134a is converted from a saturated liquid to a saturated vapor in a closed system using a reversible constant-pressure process by transferring heat from a heat reservoir at 6C. From a second-law point of view, is it more effective to do this phase change at 100 kPa or 180 kPa ? Take T0=25C and P0=100kPa.
8 - 9 0 Refrigerant - 1 3 4 a is converted from a

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