0

Full Content is available to subscribers

Subscribe/Learn More  >

Influence of Ni-P Coating Microstructure on Condensation Heat Transfer

[+] Author Affiliations
Lin Cheng, Gongming Xin, Yong Zou

Shandong University, Jinan, Shandong, China

Yanhai Cheng

China University of Mining and Technology, Xuzhou, China

Paper No. IHTC14-22316, pp. 107-113; 7 pages
doi:10.1115/IHTC14-22316
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

The higher heat transfer performance due to dropwise condensation as compared with filmwise condensation has been of considerable interest to many researchers around the world. In this study, the effect of microstructure of Ni-P coating on condensation heat transfer performance was reported. The Ni-P deposits with various microstructures, such as nano-crystalline, amorphous and co-existence of both, could be obtained on the low carbon steel tube by adjusting the electroless plating processing parameters. The experimental results show that the steel tube with electroless Ni-P coating can greatly improve the performance of condensation heat transfer compared to un-coated steel tubes. The condensation state on tubes with Ni-P coating depends on the cooling water flow rate and steam temperature, it shows the co-existence state of both dropwise and filmwise on most working conditions. At the same time, the heat transfer efficiency of condensation is improved with the decreasing of the amounts of nanocrystalline phase in Ni-P deposit, because it can increase the free surface energy of surface. Therefore, increasing the degree of amorphous state of Ni-P coating will provide a better dropwise condensation effect.

Copyright © 2010 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In