Heat exchange enhanced condensation pipe network type heat exchanger and preparing method thereof

Abstract

The invention discloses a heat exchange enhanced condensation pipe network type heat exchanger and a preparing method thereof in the field of extra-pipe condensation equipment. A hollow network type channel structure with condensation pipes communicating with one another in a crossed manner is adopted in the heat exchanger, and the pipe diameter of the condensation pipes is smaller than 3 mm. By means of the heat exchange enhanced condensation pipe network type heat exchanger and the preparing method thereof, due to the design of the condensation pipe network type structure, the heat exchangearea between working medium steam and the heat exchanger is enlarged, due to the manner of reducing the pipe diameter of the condensation pipes, the function of reducing the thickness of a local condensation surface liquid film under the implementation of capillary pressure and the Plateau-Rayleigh instability effect is achieved at the same time, the condensation heat exchange effect of the heat exchanger is obviously enhanced, meanwhile, the machining difficulty and the machining cost of the heat exchanger are greatly lowered, and the defects that an existing heat exchanger cannot be bent, and transportation and assembly flexibility is poor are overcome.

Description

technical field [0001] The invention relates to the field of condensing equipment outside the tube, in particular to a network-type heat exchanger with enhanced heat exchange condensing tubes and a preparation method thereof. Background technique [0002] Out-of-tube condensing equipment is widely used in high-energy-consuming industrial fields. It is a device that installs a heat exchanger in a closed shell to condense the working medium steam through heat exchange. There is a low-temperature coolant in the heat exchanger pipe, and the high-temperature working medium steam outside the pipe condenses on the surface of the heat exchanger pipe, and the heat is transferred to the coolant in the pipe and taken away by circulation. Condensation tubes used in existing heat exchangers can be divided into one-dimensional surface smooth tubes, two-dimensional surface finned tubes and three-dimensional surface finned tubes according to the surface structure, and the diameter of the co...

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Problems solved by technology

[0006] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is how to increase the heat exchange area between the working fluid steam and the heat exchanger, and reduce the thickness of the liquid film on the local condensation surface so as to enhance the condensation heat exchange effect and realize the heat exchange at the same time. The processing difficulty and processing cost of the heat exchanger are reduced, and the existing heat exchanger cannot be bent, and the defects of poor transportation and assembly flexibility are overcome.

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