Shell-tube condensing heat exchanger

Abstract

The invention provides a shell-tube condensing heat exchanger, and relates to the technical field of condensing heat exchangers, particularly to the technical field of the shell-tube condensing heat exchanger. The shell-tube condensing heat exchanger provided by the invention comprises an absorber shell of which both ends are provided with a first gathering box and a second gathering box respectively; the upper part of the first gathering box located at the upper end of the absorber shell is connected to a working medium inlet pipe and a cooling liquid outlet pipe respectively, and the second gathering box located at the lower part of the absorber shell is connected to a working medium outlet pipe and a cooling liquid inlet pipe respectively; the absorber shell is internally provided with a plurality of cooling liquid pipes used for connecting a cooling liquid pipe inlet and a cooling liquid pipe outlet, and the outer walls of the cooling liquid pipes are super-hydrophobic-hydrophilic mixing surfaces; the hydrophobic surfaces are provided with a plurality of V-shaped rib columns arranged uniformly. The shell-tube condensing heat exchanger provided by the invention has good heat exchange effect, and the purposes of durable dropwise condensation and improvement of heat exchange efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of condensation heat exchangers, in particular to the technical field of shell-and-tube condensation heat exchangers. Background technique [0002] Shell-and-tube condenser is a type of condensation heat exchanger commonly used in various refrigeration and power cycles. Optimizing and improving the condenser to improve its heat exchange efficiency can not only save materials, reduce the footprint of the condenser, and It can improve the operating efficiency of the entire air conditioning system. In other words, the optimization and improvement of the condenser is an important link and research direction to solve the development bottleneck of various existing power generation and refrigeration systems. [0003] Vapor condensation is one of the important heat transfer processes in heat exchangers. The condensation method can be divided into film condensation and drop condensation according to the degree of w...

AI Technical Summary

Problems solved by technology

However, in the existing heat exchanger, it is generally film condensation, the heat transfer coefficient is low, and the condensed liquid will continue to increase as the condensation process proceeds, and the liquid film will gradually become thicker, which seriously affects the heat transfer of the heat exchanger. Effect, resulting in a large energy loss in the heat exchange process, affecting the efficiency of the entire cycle

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