Magnetism-assisted porous fin type heat exchanger and real-time control method for heat exchange

Abstract

The invention discloses a magnetism-assisted porous fin type heat exchanger capable of changing the pore size in real time, and a real-time control method for heat exchange. Multiple layers of porousfin layers are arranged in a heat exchanger body; each layer of porous fin layer is formed by arranging and connecting porous fins at intervals; a runner is formed between each two adjacent porous fins; the porous fins are provided with circular holes; magnetic-sensing metamaterials are arranged in the circular holes; fixed semicircles are arranged on one sides of the magnetic-sensing metamaterials, and transformable semiellipes are arranged on the other sides of the magnetic-sensing metamaterials; the semicircle sides of the magnetic-sensing metamaterials are fixedly connected with one sidesof the circular holes of the porous fins through welding; and the semiellipe sides are free sides and can be transformed between semicircles and semiellipes. According to the magnetism-assisted porousfin type heat exchanger, and the real-time control method for heat exchange provided by the invention, the magnetic-sensing metamaterials are specially arranged in the circular holes of the fins, sothat the heat exchanger can have a heat exchange performance as high as possible under different inlet flow rates, boundary layers of fluids can be damaged, the lateral mixing between the fluids is promoted, and an overall heat exchange performance of the heat exchanger is improved.

Description

technical field [0001] The invention relates to a porous fin heat exchanger and a control method thereof in the technical field of engineering heat exchange, in particular to a magnetically assisted porous fin heat exchanger and a method for real-time control of heat exchange. Background technique [0002] With the rapid development of metallurgy and chemical (petrochemical) industries, the demand for air separation equipment is increasing. The heat exchanger is a key component in the air separation plant, and it is one of the key equipment for energy saving and consumption reduction of the air separation plant. Porous fins have the characteristics of simple processing technology and large specific surface area, which not only reduce the weight of the fins, but also enhance the heat transfer performance of the fins. They are widely used in various heat exchangers and have always been the focus of research by scholars at home and abroad. The fin openings can continuously rup...

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Problems solved by technology

[0003] Aiming at the problems existing in the fins of existing heat exchangers, the present invention provides a porous plate-fin heat exchanger whose pore size can be changed in real time, as well as a method that can change the pore size in real time and then adjust and control the heat exchange working conditions and performance

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