Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bionic surface structure for strengthening evaporation heat exchanging of liquid film

A surface structure, film evaporation technology, applied in heat transfer modification, heat exchange equipment, lighting and heating equipment, etc., can solve problems such as deterioration of heat and mass transfer effects, temporary or permanent rupture of liquid film, and achieve uniform spreading, The effect of reducing the thickness of the liquid film and reducing the heat transfer resistance

Inactive Publication Date: 2014-06-18
JILIN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the wall shape or its size parameters are not properly selected, it may cause local temporary or permanent rupture of the liquid film and deteriorate the heat and mass transfer effect.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bionic surface structure for strengthening evaporation heat exchanging of liquid film
  • Bionic surface structure for strengthening evaporation heat exchanging of liquid film
  • Bionic surface structure for strengthening evaporation heat exchanging of liquid film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] see figure 1 , figure 2 , image 3 and Figure 4 As shown, in this embodiment, three-dimensional bionic zigzag unit bodies 1 are distributed on the substrate surface 2 of the heat transfer tube or heat transfer plate. overlapping each other and closely arranged, the angle β between the side of the three-dimensional bionic zigzag unit body 1 and the horizontal direction is 70-90°; the width W of the three-dimensional bionic zigzag unit body 1 is 0.2-1mm, and the three-dimensional bionic zigzag unit The thickness T of the zigzag unit body 1 is 0.2-1 mm, and the height H of the three-dimensional bionic zigzag unit body 1 is 0.3-1.2 mm; the three-dimensional bionic zigzag unit body 1 is in an inclined state, and its inclination direction is in line with the flow direction of the liquid film. unanimous.

[0024] The tip of the three-dimensional biomimetic zigzag unit body 1 has three micro-scale micro-zigzag structures 11, and the three micro-scale micro-zigzag structur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
thicknessaaaaaaaaaa
heightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a bionic surface structure for strengthening evaporation heat exchanging of a liquid film, which is characterized in that three-dimensional bionic zigzag unit bodies are distributed on the surface of a substrate of a heat transferring pipe or a heat transferring plate, and the structural size of each three-dimensional bionic zigzag unit body is nanometer grade or millimeter grade; the three-dimensional bionic zigzag unit bodies are obliquely arranged, the inclined direction of the three-dimensional bionic zigzag unit bodies is consistent with the flowing direction of the liquid film, and the inclined three-dimensional bionic zigzag unit bodies are mutually lapped with one another; a sharp part of each three-dimensional bionic zigzag unit body is provided with three micro-sized micro zigzag structures, and the three micro-sized micro zigzag structures are arranged in a manner that two lower micro zigzag structures are arranged on two ends and one higher micro zigzag structure is arranged in the middle, and the heights of the two lower micro zigzag structures are identical to each other; the three-dimensional bionic zigzag unit bodies are distributed in a rhombic shape or a rectangular shape; the three-dimensional bionic zigzag unit bodies are mutually lapped with one another, so that the liquid film can be uniformly spread, and dry spots or dry points can be prevented from appearing on the surface; and the zigzag structure surface can control the flowing direction of the liquid film, so that the thickness of the liquid film is reduced, the heat transferring resistance can be effectively reduced, and the evaporation heat transferring efficiency of the liquid film is increased.

Description

technical field [0001] The invention relates to a surface structure, in particular to a bionic surface structure for enhancing liquid film evaporation heat transfer. Background technique [0002] Liquid film evaporation heat transfer is a high-efficiency heat transfer technology developed in recent years. It has unique advantages such as small flow rate, small temperature difference, high heat and mass transfer coefficient, simple structure and low power consumption. It is used in traditional industrial fields and high-tech In the field of heat transfer enhancement under high heat flux has received outstanding attention. Studies have shown that the main reason affecting the heat and mass exchange of liquid film evaporation is the flow form of the liquid film and the thickness of the liquid film. How to maintain the stability of the liquid film flow, so that it can evenly wet the heat transfer surface, and prevent the heat transfer due to the liquid thin rupture. When dry sp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F28F13/00
Inventor 张成春康芷铭王晶韩志武任露泉
Owner JILIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com