(Solution) - Refrigerant 134a at 140 kPa and 10 C -(2025 Original AI-Free Solution)

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Refrigerant-134a at 140 kPa and -10°C is compressed by an adiabatic 0.5-kW compressor to an exit state of 700 kPa and 60°C. Neglecting the changes in kinetic and potential energies and assuming the surroundings to be at 27°C, determine
(a) The isentropic efficiency and
(b) The second-law efficiency of the compressor.