A stream of oil,with specific heat 2.4 kJ/kg K, flowing at 1000 kg/hr is to becooled from 130°C to 80°C in a heat exchanger, using 1200kg/hr water at 20°C as the cooling medium. The predictedoverall heat transfer coefficient, based on the outside diameter ofthe inside pipe is 360 W/m2K . Specific heat(Cp) for water is 4.2 kJ/kg K
a. CalculateΔTLMif the flow is co-current
b. Calculate the heat transfer area required if the flow is co-current
c. CalculateΔTLMif the flow iscounter-current.