Enhancement of Boiling Heat Transfer Outside A Tube by Ejecting Inert Gas

贾岫庄; 沈自求

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Enhancement of Boiling Heat Transfer Outside A Tube by Ejecting Inert Gas

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- Enhancement of Boiling Heat Transfer Outside A Tube by Ejecting Inert Gas
- CIESC Journal Issue 3, (1991)
- 作者机构：
  
  大连理工大学化学工程研究所,大连理工大学化学工程研究所 ,,辽宁,大连,辽宁,大连
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 1991，
  
  Published：25 June 1991
- 稿件说明：
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贾岫庄, 沈自求. Enhancement of Boiling Heat Transfer Outside A Tube by Ejecting Inert Gas[J]. CIESC Journal, 1991, (3).
DOI：

贾岫庄, 沈自求. Enhancement of Boiling Heat Transfer Outside A Tube by Ejecting Inert Gas[J]. CIESC Journal, 1991, (3). DOI：

摘要

在沸腾传热中

微层蒸发(Vaporization of microlayer)是热量传递的一个重要途径.微层蒸发是指沸腾壁面产生的气泡在生长过程中

与壁面之间形成极薄的过热液体微层(30～50μm)

微层过热而向气泡内部蒸发扩散

同时从壁面吸收热量做为汽化潜热

Abstract

The vaporization of microlayer is an important mechanism in boiling heat transfer. By increasing microlayer vaporization boiling heat transfer could be enhanced. A new method based on the above mechanism is proposed

i. e.

to eject an inert gas into the bulk liquid

to enhance boiling heat transfer outside a tube. The experiments showed that the heat transfer coefficient could be improved remarkably with this method.

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