Refrigerant-134a enters an adiabatic compressor at 2308C as a saturated vapor at a rate of 0.45 m3/min and leaves at 900 kPa and 558C. Determine (a) the power input to the compressor, (b) the isentropic efficiency of the compressor, and (c) the rate of exergy destruction and the second-law efficiency of the compressor. Take T0 5 278C.

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900 kPa 55 C R-134a -30 C 0.45 m/min sat. vap. FIGURE P8-62