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The Enhancement of Marangoni Condensation Heat Transfer by Addition of Additives

[+] Author Affiliations
Baohong Peng, Li Yang

Hebei University of Technology, Tianjin, China

Paper No. MNHT2008-52024, pp. 421-427; 7 pages
doi:10.1115/MNHT2008-52024
From:
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer
  • ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer, Parts A and B
  • Tainan, Taiwan, June 6–9, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4292-4 | eISBN: 0-7918-3813-7
  • Copyright © 2008 by ASME

abstract

This paper investigated the heat transfer process that the condensing occurred on the tube and the vapor has been added with effective additives. The effective additives trigger interfacial convection that leads to loss of hydrodynamic stability at the liquid/vapor interface and produce a spontaneous disturbance in the condensate liquid. As a result, condensation heat transfer is significantly increased. Both physical models included the condensate liquid film and mathematical model based on the boundary layer equation were given and then transformed to a non-dimensional form by applying the similarity theory. The main concept of developing the model is to understand the basic mechanism of surface tension effect on the process of steam condensation.

Copyright © 2008 by ASME

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