Refrigerant 134a enters a compressor operating at steady state as saturated vapor at -8 degress celcius and exits at a pressure of 12 bar. The isentropic compressor efficiency is 70%. Heat transfer between the compressor and its surroundings can be ignored. Kinetic and potential energy effects are also neligible. Determine the exit temperature in degrees celcius and the work input (-Wcv/m), in kJ/kg of refrigerant flowing.