Shell-and-tube heat exchanger of fractal structure

Abstract

The invention provides a shell-and-tube heat exchanger of a fractal structure. The shell-and-tube heat exchanger comprises a shell, a shell pass fluid inlet, a shell pass fluid outlet and a heat exchange tube bundle. Both the shell pass fluid inlet and the shell pass fluid outlet are communicated with the interior of the shell. The heat exchange tube bundle is located in the shell and is of a deoxyribose nucleic acid (DNA) type multi-spiral structure. The whole heat exchange tube bundle is of the DNA molecule spiral structure and can effectively guide shell pass fluid to flow along a spiral path. The field synergy of a shell pass is enhanced under the circumstance that pressure drop loss is little, and a flowing dead zone of the shell pass is eliminated.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a shell-and-tube heat exchanger with a fractal structure. Background technique [0002] Shell and tube heat exchangers are usually composed of tube boxes, tube sheets, shells, heat exchange tubes, etc. Shell-and-tube heat exchangers generally arrange many parallel tubes in a cylindrical shell, that is, parallel tube bundles, and the hot and cold fluids exchange heat through heat exchange tubes (parallel tube bundles). Traditional shell-and-tube radiators are generally equipped with baffles perpendicular to the heat exchange tube bundle. Although the heat transfer performance is improved to a certain extent, it also leads to an increase in the flow resistance while improving the heat transfer performance, that is, the consumption A certain amount of pump work is used to obtain a certain amount of heat exchange. [0003] Shell-and-tube heat exchangers have the advantages of high reliabil...

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Problems solved by technology

[0008] In order to solve the deficiencies of the prior art, the present invention proposes a shell-and-tube heat exchanger with a fractal structure, which is used to solve the problems of relatively poor flow and heat transfer performance of the shell-and-tube heat exchanger in the prior art

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