A refrigerator uses R-134a and operates on the vapor compression refrigeration cycle. The isentropic efficiency of the compressor is .92. The refrigerant enters the compressor at a rate of 0.03 kg/s superheated by 10 degrees celcius and leaves the condenser subcooled at 4.5 degrees celcius. The evaporator pressure is 200 kPa and the condensor pressure is 1600 Kp. Find the rate of cooling of the evaporator, the power input and the COP.