Saturated, nucleate pool boiling on a horizontal, cylindrical heater in aqueous solutions of a fluorosurfactant (FS-50) is experimentally investigated. FS-50 is a long chain molecule of fluorinated carbon atoms, and it produces very low dynamic surface tension (varying from 72.5 mN/m to 17.4 mN/m with surface age and concentration) in aqueous solutions. Boiling curves (given by the variation of heat flux with wall superheat) and photographic records of the ebullient behavior are presented, along with a detailed characterization of the interfacial tension of the solutions. It is seen that nucleate pool boiling behavior of water is significantly altered by the addition of FS-50, and the heat transfer is increased. The enhancement in boiling is seen to stem from the substantial changes in the interfacial properties. A rather complex interplay of dynamic interfacial tension and surface wetting due to varying surfactant concentrations is seen to affect the phase change ebullient dynamics and associated heat transfer.
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ASME 2011 International Mechanical Engineering Congress and Exposition
November 11–17, 2011
Denver, Colorado, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5496-9
PROCEEDINGS PAPER
Experimental Study of Effects of Interfacial Properties on Nucleate Pool Boiling in Water
U. Verma,
U. Verma
University of Cincinnati, Cincinnati, OH
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R. M. Manglik,
R. M. Manglik
University of Cincinnati, Cincinnati, OH
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M. A. Jog
M. A. Jog
University of Cincinnati, Cincinnati, OH
Search for other works by this author on:
U. Verma
University of Cincinnati, Cincinnati, OH
R. M. Manglik
University of Cincinnati, Cincinnati, OH
M. A. Jog
University of Cincinnati, Cincinnati, OH
Paper No:
IMECE2011-62740, pp. 779-785; 7 pages
Published Online:
August 1, 2012
Citation
Verma, U, Manglik, RM, & Jog, MA. "Experimental Study of Effects of Interfacial Properties on Nucleate Pool Boiling in Water." Proceedings of the ASME 2011 International Mechanical Engineering Congress and Exposition. Volume 10: Heat and Mass Transport Processes, Parts A and B. Denver, Colorado, USA. November 11–17, 2011. pp. 779-785. ASME. https://doi.org/10.1115/IMECE2011-62740
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