Calculate the surface area required when the cooling flow is 0.4 kgs-1 for both a co-flow and counter flow heat exchanger.
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.
Exhaust gases flowing through a tubular heat exchanger at the rate of 0.3 kgs-1 are cooled from
400⁰C to 120 ⁰C by water initially at 10⁰C. The specific heat of exhaust gases and water may be
taken as 1.13 and 4.19 kJkg-1K-1 respectively, and the overall heat transfer coefficient from gases
to water is 140 Wm-2K-1. Calculate the surface area required when the cooling flow is 0.4 kgs-1 for
both a co-flow and counter flow heat exchanger.
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