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Dropwise Condensation Heat Transfer on Superhydrophobic Surface in the Presence of Non-Condensable Gas

[+] Author Affiliations
Xuehu Ma, Sifang Wang, Zhong Lan, Aili Wang, Benli Peng

Dalian University of Technology, Dalian, Liaoning, China

Paper No. IHTC14-22248, pp. 71-79; 9 pages
doi:10.1115/IHTC14-22248
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 2
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4937-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

Roughness-induced superhydrophobic surface was applied to promote dropwise condensation (DWC) on a vertical plate in the presence of non-condensable gas (NCG). The DWC heat transfer characteristics were investigated and the wetting behaviors of the condensate droplets were observed visually. The experimental results have shown that the roughness-induced superhydrophobic surface would enhance the heat transfer characteristics of steam condensation in the presence of NCG with high concentration. The underlined mechanism is analyzed in terms of the droplet wetting modes.

Copyright © 2010 by ASME

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