Acompressor operates at steady state with refrigerant 134a as the working fluid. the refrigerant enters at 0.24 mpa, 0°c, with a volumetric flow rate of 0.64 m/min. the diameters of the inlet and exit pipes are 3 and 1.5 cm, respectively. at the exit, the pressure is 1.0 mpa and the temperature is 50°c. if the magnitude of the heat transfer rate from the compressor to its surroundings is 5% of the compressor power input, determine the power input, in kw.