Refrigerant-134a enters an adiabatic compressor at 15 psia and 20°F with a volume flow rate of 10 ft3/s and leaves at a pressure of 100 psia. The power input to the compressor is 45 hp. Find (a) the mass flow rate of the refrigerant and (b) the exit temperature

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P2= 100 psia R-134a 45 hp Pi = 15 psia 7, = 20°F V1 = 10 ㎡/s