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A layout structure with low resistance and enhanced heat transfer based on nano-superwetting interface

A technology to enhance heat transfer and layout structure, applied in the field of thermal management, can solve the problems of reducing heat transfer efficiency and overall performance of heat exchangers, increasing condensed water retention, harmful biological growth, etc., to promote droplet movement and/or Effects of controlling droplet movement path, increasing critical heat flux density, and increasing nucleation density

Active Publication Date: 2021-09-07
CHINA ACADEMY OF SPACE TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the condenser, it is difficult to effectively drain the water if it is completely made of hydrophilic materials, which will increase the retention of condensed water, increase the pressure drop, and cause the possibility of corrosion, thereby reducing the heat transfer efficiency and overall performance of the heat exchanger, which may endanger human beings. Provides a place for healthy biological growth

Method used

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  • A layout structure with low resistance and enhanced heat transfer based on nano-superwetting interface
  • A layout structure with low resistance and enhanced heat transfer based on nano-superwetting interface
  • A layout structure with low resistance and enhanced heat transfer based on nano-superwetting interface

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Embodiment Construction

[0035] The present invention will be further elaborated below in conjunction with embodiment.

[0036]A low-resistance enhanced heat transfer layout structure based on a nano-superwetting interface. A certain proportion of super-hydrophilic and super-hydrophobic areas are arranged along a certain direction on the surface of the object to form a wettability gradient and control the movement of droplets on the array surface. path;

[0037] The shape of the layout surface is rectangular or circular;

[0038] For the case where the shape of the layout surface is a rectangle,

[0039] Set 11 areas with the same area along the length of the surface, the first area is a 100% super-hydrophobic surface (white area), and the second area is set with a super-hydrophilic surface (dark part) with 10% area area. The super-hydrophilic surface of 10% of the area is rectangular, the length is the same as the area length, and the width is 10% of the area width, and the center point of the supe...

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Abstract

The invention relates to a low-resistance enhanced heat transfer layout structure based on a nano-superwetting interface. Eleven areas with the same area are set along the surface length direction. The first area is a 100% super-hydrophobic surface, and the second area is set with 10 % super-hydrophilic surface of the area, 10% of the super-hydrophilic surface of this area is rectangular or circular, and 20% of the super-hydrophilic surface is set in the third area, and so on, and each area increases sequentially thereafter 10% superhydrophilic surface, until the 11th region is 100% superhydrophilic surface, thereby forming a patterned gradient wettability from 100% superhydrophobic area to 100% superhydrophilic area. The invention can be used in ultra-compact heat exchangers with low heat flux or medium heat flux, and the incorporation and use of surface wettability modification in energy systems has great application possibilities and far-reaching potential effects.

Description

technical field [0001] The invention belongs to the technical field of thermal management, and relates to a low-resistance enhanced heat transfer layout structure based on a nanometer super-wetting interface. Background technique [0002] Various industries are currently interested in developing advanced ultra-compact heat exchangers, which are important to the overall efficiency, cost, and compactness of many thermal management and energy systems. A heat exchanger is a device responsible for transferring heat between two or more fluids (liquid or gas) by a combination of conduction, internal / external convection and / or radiation, also known as a heat exchanger. Heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers in a wide range of applications. In the evaporator, the liquid working medium absorbs heat and vaporizes; in the condenser, the gas working medium releases heat and condenses. Aluminum, copper, stainless steel, and silicon are wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/02F28F21/00
CPCF28D15/0233F28F21/00
Inventor 吕晓辰李龙谢文远姚伟
Owner CHINA ACADEMY OF SPACE TECHNOLOGY