Sweetened condensed milk is pumped through a plate cooler after batch pasteurization. The milk enters the cooler at 74°C and exits at 4°C, and is pumped at a rate of 200 kg/h. What quantity of heat needs to be removed by the cooling medium in 8 hours of processing?
(Cp above freezing =1.742 kJ/kg°C; Cp below freezing = 1.176 kJ/kg°C; latent heat = 90.06 kJ/kg)