Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (08): 2798-2808.DOI: 10.16085/j.issn.1000-6613.2016-2350

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Progress on boiling heat transfer from porous structure and surface wettability

CHEN Hongxia1,2, HUANG Linbin1, GONG Yifei1   

  1. 1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;
    2. The Beijing Key Laboratory of Multi-phase Flow and Heat Transfer, North China Electric Power University, Beijing 102206, China
  • Received:2016-12-19 Revised:2017-01-28 Online:2017-08-05 Published:2017-08-05

多孔结构及表面浸润性对池沸腾传热影响的研究进展

陈宏霞1,2, 黄林滨1, 宫逸飞1   

  1. 1. 华北电力大学能源与动力工程学院, 北京 102206;
    2. 多相流与传热北京市重点实验室, 北京 102206
  • 通讯作者: 陈宏霞(1980-),女,博士,副教授,研究方向为强化传热与节能及新型复杂材料的应用。
  • 作者简介:陈宏霞(1980-),女,博士,副教授,研究方向为强化传热与节能及新型复杂材料的应用。E-mail:hxchen@ncepu.edu.cn。
  • 基金资助:
    国家自然科学基金项目(51576063)。

Abstract: Boiling is widely used in industries,such as the large scale integrated circuit cooling,CPU cooling,energy storage and so on. Porous metal is rapidly becoming a new hot spot in the field of boiling enhancement because of its high specific surface area,excellent thermal conductivity as well as a dense potential bubble nucleate sites. Coupled with wettability modification,porous surfaces can greatly improve the critical heat flux(CHF),easily control the boiling from disorderly to orderly. This review focused on the effects of porous surface and wettability on boiling heat transfer performance and heat transfer mechanism,which involves in porous sizes,shapes,nucleation site distribution and wettability. This paper also discussed the model evolution of boiling heat transfer; the Kandlikar series CHF model based on the Zuber formula was analyzed. Microlayer evaporation and transient conduction are considered as the main mechanism to enhance nucleate boiling. Micro/nano porous with local wettability can improve boiling heat transfer,which could be a potential new research idea.

Key words: pool boiling, heat transfer enhancement, micro/nano porous surface, wettability, nucleation site

摘要: 沸腾传热是一种高效换热方式,在多种领域具有广泛应用前景。其中多孔金属表面由于其比表面积大、导热性能好以及汽化核心密度高等突出优点,受到广泛关注;而多孔表面、耦合表面、亲疏水改性能极大地提高临界热流密度,调控沸腾传热,变无序为可控,正迅速成为强化沸腾相变传热领域的新热点。本文追踪了多孔表面和表面改性强化沸腾传热的最新进展,重点介绍多孔尺度、形状、核化点布局及整体/局部亲疏水性强化沸腾性能及机理;简要分析了以Zuber临界热流密度公式为基础的Kandlikar系列公式;整理近年来不断完善和改进的沸腾传热机理模型,认为微液层蒸发和瞬态热传导是微纳多孔表面强化沸腾的主导机制;进一步指出微纳多孔表面耦合、局部亲疏水性处理是强化沸腾传热新的发展方向。

关键词: 池沸腾, 强化传热, 微纳多孔表面, 亲疏水性, 汽化核心

CLC Number: 

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