A food department is kept at - 12°C by a refrigerator in an environment at 30°C. The total...

A food department is kept at - 12°C by a refrigerator in an environment at 30°C. The total heat gain to the food department is estimated to be 3300 kJ/h and the heat rejection in the condenser is 4800 kJ/h. Determine the power input to the compressor, in kW and the COP of the refrigerator.