Consider the flow of engine oil (Cp= 2048 J/kg-K) through a thin-walled copper tube at a rate of 0.3 kg/s. The engine oil that enters the copper tube at an inlet temperature of 80°C is to be cooled by cold water (Cp= 4180 J/kg-K) flowing at a temperature of 20°C. It is desired to have an exit temperature of the engine oil not greater than 72°C. The individual convective heat transfer coefficients on oil and water sides are 750 W/m2.K and 350 W/m2.K, respectively. A thermocouple probe installed on the downstream side of the cooling water measures a temperature of 48°C for a double-pipe parallel-flow heat exchanger.

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Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.