A shell-and-tube heat exchanger must heat 2.8 kg/s of a solution with a specific heat of 3.25 kJ/(kg.K), which enters the tube side at 61 C and leaves it at 90 C. Heat is supplied by saturated steam condensing at 133.51 C on the outside tube surface, with no sub-cooling heat of vaporization under these condition is 2164.28 kJ/kg. Tubes with length of 3 m, 4.0 cm O.D., and 3 cm L.D. are available. Determine the number of tubes required if the overall heat transfer coefficient based on the outside heat exchange area is Uout = 968 W/(m.^2 K) and the correction factor is F = 0.80. Under these conditions determine the mass flow rate of the hot fluid and the overall heat transfer coefficient based on the inside area.
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.
A shell-and-tube heat exchanger must heat 2.8 kg/s of a solution with a specific heat of 3.25 kJ/(kg.K), which enters the tube side at 61 C and leaves it at 90 C. Heat is supplied by saturated steam condensing at 133.51 C on the outside tube surface, with no sub-cooling heat of vaporization under these condition is 2164.28 kJ/kg. Tubes with length of 3 m, 4.0 cm O.D., and 3 cm L.D. are available. Determine the number of tubes required if the overall heat transfer coefficient based on the outside heat exchange area is Uout = 968 W/(m.^2 K) and the correction factor is F = 0.80. Under these conditions determine the mass flow rate of the hot fluid and the overall heat transfer coefficient based on the inside area.
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