CIESC Journal

• 化工学报 • 上一篇    

通入惰性气体强化管外沸腾传热的实验研究

贾岫庄,沈自求   

  1. 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
  • 出版日期:1991-06-25 发布日期:1991-06-25

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

Jia Xiuzhuang and Shen Ziqiu (Dalian University of Technology, Liaoning, Dalian)   

  • Online:1991-06-25 Published:1991-06-25

摘要: <正>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.