An ice machine working on a vapour-compression cycle produces 10 kg/h of ice at −5 °C from water at 30 °C; specific heat of ice 2.1 and of water 4.2 kJ/kg·K; latent heat 344 kJ/kg. Find the refrigeration capacity (in kW). If the compressor work is 0.3 kW, find the COP.