A double pipe counter-flow heat exchanger is used to cool 10,000 kg/h of an oil (C,, = 2095 Joules/kg k) from 80 to 50°C using 8000 kg/h water (Cp= 4180 J/kg k) entering at 25°C. Find the heat...

A double pipe counter-flow heat exchanger is used to cool 10,000 kg/h of an oil (C,, = 2095 Joules/kg k) from 80 to 50°C using 8000 kg/h water (Cp= 4180 J/kg k) entering at 25°C. Find the heat exchanger area required with an overall heat transfer coefficient is 300 W/m2.