A vapour-compression refrigeration system based on CFC-12 operates between an evaporator temperature of \(245 \mathrm{~K}\) and a condenser temperature of \(310 \mathrm{~K}\). The power input to the compressor is \(55 \mathrm{~kW}\). Determine the cooling capacity and the COP of the system, given that Enthalpy of saturated vapour at \(245 \mathrm{~K}=176.7 \mathrm{~kJ} / \mathrm{kg}\)

Enthalpy of saturated liquid at \(306 \mathrm{~K}=71.23 \mathrm{~kJ} / \mathrm{kg}\)

Enthalpy of superheated vapour \(=204.2 \mathrm{~kJ} / \mathrm{kg}\).