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The shell and tube heat exchanger
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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The shell and tube heat exchanger consists of a bundle of tubes enclosed in a cylindrical shell. The ends of the tubes are fitted into tube sheets, which separate the shell side and tube side fluids. Baffles are provided in the shell to direct the fluid flow and support the tubes. Support rods and spacers hold the assembly of baffles and tubes together. The shell and tube heat exchangers can be constructed with a very large heat transfer surface in a relatively small volume, fabricated from alloy steels to resist corrosion and be used for heating. The tubes are connected so that the internal fluid makes several passes up and down the exchanger thus enabling a high velocity of flow to be obtained for a given heat transfer area and throughput of fluid. The fluid flowing in the shell is made to flow first in one direction and then in the opposite across...
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