High-performance condensation heat exchange tube based on bionic structure

A heat exchange tube and high-performance technology, which is applied in the direction of tubular elements, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of limited space for enhancing condensing heat exchange and low condensing heat transfer coefficient, so as to facilitate the elimination, Low rolling resistance and the effect of increasing the condensation rate

Active Publication Date: 2018-04-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the condensation methods achieved by the above methods are all film-like condensation, and the condensate film is attached to the tube wall to form a thermal resistance, so that the ga

Method used

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  • High-performance condensation heat exchange tube based on bionic structure
  • High-performance condensation heat exchange tube based on bionic structure

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Embodiment Construction

[0025] The following is a further detailed description in conjunction with the drawings:

[0026] Such as figure 1 As shown, the present invention prepares a superhydrophobic substrate on the surface of a heat exchange tube base tube with hydrophobic microchannels and a needle-like hydrophilic bionic structure distributed on the superhydrophobic substrate. On the surface of the condensing heat exchange tube based on the bionic structure, the hydrophilic area and the superhydrophobic area are organically combined, and the needle-like hydrophilic bionic structure is distributed on the superhydrophobic substrate at equal intervals in a fork-row manner. The hydrophobic microchannel structure is reasonably distributed according to the arrangement of the needle-like hydrophilic bionic structure and the placement of the condenser.

[0027] In addition, the needle-like hydrophilic biomimetic structures can also be arranged on the superhydrophobic substrate in a random or in-line manner.

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Abstract

The invention discloses a high-performance condensation heat exchange tube based on a bionic structure. The high-performance condensation heat exchange tube based on the bionic structure is used for efficiently condensing water vapor or organic steam and removing the condensed fluid in time. The condensation heat exchange tube comprises a heat exchange tube base tube (1) with a hydrophobic micro-channel structure, a super-hydrophobic base (2) arranged on the surface of the heat exchange tube base tube (1), the hydrophobic micro-channel structure (4) distributed on the super-hydrophobic base (2) and a needle-shaped hydrophilic bionic structure (3) distributed on the hydrophobic micro-channel structure (4). According to the high-performance condensation heat exchange tube, the heat exchangetube base tube is treated by the spray drying technology based on the ultrasonic atomization, so that the surface performance of the material is effectively improved, the surface energy is reduced, and more stable bead-shaped condensate is formed on the surface of the heat exchange tube; and the hydrophobic micro-channels distributed on the condensation surface can guide the liquid beads moving tothe root of the needle-shaped hydrophilic bionic structure to be away in time so that the condensation circulation can be carried out smoothly.

Description

Technical field [0001] The invention relates to a high-efficiency condensation heat exchange tube widely used in the fields of energy, electronics, refrigeration and the like, and specifically relates to a high-performance condensation heat exchange tube based on a bionic structure designed to improve condensation heat exchange efficiency. Background technique [0002] Vapor condensation heat transfer processes are widely used in energy, chemical, refrigeration and other industrial fields. Vapor condensation can generate a lot of latent heat. Therefore, the recovery of latent heat is very important for energy saving and emission reduction. In the refrigeration industry, the use of condensers with higher condensation efficiency can reduce the area of ​​the condenser and save materials. In addition, when there is a non-condensable gas in the vapor, a gas film will be formed between the liquid film or droplets and the mixed gas, which will increase the mass transfer resistance betwe...

Claims

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Application Information

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IPC IPC(8): F28F1/10
CPCF28F1/10
Inventor 施娟冯东阳陈振乾
Owner SOUTHEAST UNIV
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