Question

An ice making plant produces ice at atmospheric pressure and at 0°C from water. The mean temperature of the cooling water circulating through the condenser of the refrigerating machine is 18°C. Evaluate the minimum electrical work in kWh required to produce 1 tonne of ice (The enthalpy of fusion of ice at atmospheric pressure is 333.5 kJ/kg).​

Answer 1

Answer:

Maximum (COP) =273291273−= 15.2∴minQW= 15.2orWmin=Q15.2=1000333.5kJ15.2×= 21.989 MJ= 6.108 KWh