1000 kg/hr of oil (C,, = 2.09 kJ/kg°C) is to be cooled from 80°C to 400°C in oil cooler by using water flow of 1000 kg/hr at 30°C. Give your choice for a parallel-flow or counter-flow heat exchanger,...

1000 kg/hr of oil (C,, = 2.09 kJ/kg°C) is to be cooled from 80°C to 400°C in oil cooler by using water flow of 1000 kg/hr at 30°C. Give your choice for a parallel-flow or counter-flow heat exchanger, if the overall heat transfer coefficient is 24 W/m2C. For water Cp= 4.18 kJ/kg°C.