In a vapor compression refrigerator, refrigerant R-134a enters the compressor as a saturated vapor at-4oC.The refrigerant leaves the compressor as a superheated vapor at 1 MPa and 50oC and the mass flow of the refrigerant is 0.02 kg/s. The compressor requires a work input of 750 W and kinetic and potential energy changes are negligible. Determine the heat lost to the surroundings.