Cold water (cp = 4180 J/kg×K) leading to a shower enters a thin-walled double-pipe counterflow heat exchanger at 15°C at a rate of 0.25 kg/s and is heated to 45°C by hot water (cp = 4190 J/kg×K) that enters at 100°C at a rate of 3 kg/s. If the overall heat transfer coefficient is 950 W/m2×K, determine the rate of heat transfer and the heat surface area of the heat exchanger using the effectiveness–NTU method.
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.
Cold water (cp = 4180 J/kg×K) leading to a shower enters a thin-walled double-pipe counterflow
heat exchanger at 15°C at a rate of 0.25 kg/s and is heated to 45°C by hot water (cp = 4190 J/kg×K) that enters
at 100°C at a rate of 3 kg/s. If the overall heat transfer coefficient is 950 W/m2×K, determine the rate of heat
transfer and the heat surface area of the heat exchanger using the effectiveness–NTU method.
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