R-134a enters the coils of the evaporator of a refrigeration system as a saturated vapor-liquid mixture at a pressure of 200 kPa. The refrigerant absorbs 120 kJ of heat from the cooled space, which is maintained at -5oC, and leaves the evaporator as a saturated vapor at the same pressure. Determine...
a.) The entropy change of the refrigerant.
b.) The entropy change of the refrigerated space.
c.) The entropy change of the universe for the process.
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