Refrigerant-134a is expanded adiabatically

Refrigerant-134a is expanded adiabatically

Refrigerant-134a is expanded adiabatically in an expansion valve from 1.2 MPa and 40째C to 180 kPa. For environment conditions of 100 kPa and 20째C, determine
(a) The work potential of R-134a at the inlet,

(b) The energy destruction during the process, and

(c) The second-law efficiency.

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