The R134a enters the compressor of a refrigerator at 100kpa superheated by 6.5 degrees Celsius at a rate of 0.02kg/s and leaves at 800kpa and 50 degrees Celsius. The refrigerant is cooled in the condenser to saturated liquid. Assuming the compressor has an isentropic efficiency of 80 % and there is no pressure drop through the condenser and evaporator, determine (a) the rate of heat loss to the ambient from the compressor, (b) CopR.