A compressor enters an adiabatic process as saturated vapor at 100 kPa at a rate of 0.7 m^3 /min and exits at 1-MPa pressure. If the isentropic efficiency of the compressor is 87 percent. Determine: a. the temperature of the refrigerant at the exit of the compressor.
b. the power input, in kW.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.