3. (11 points) Refrigerant R-134a enters an adiabatic compressor at 100 kPa as saturated vapor, and exits at 500 kPa and 50 °C. The mass flow rate is 5 kg/s.

(3a). (4p) Please find the isentropic efficiency of this compressor (3b). (4p) Please find the power consumption of this compressor 3c). (3p) Please plot the process in a T-s and a h-s diagram.