Abstract
In this paper experimental results of heat and mass transfer variations during a single vapour bubble growth are carried out. The vapour bubble was created in a FC-72 liquid, on a downward facing heating element maintained at constant heating power. Heat flux and temperature measurements combined with image processing enable us to study the influence, on heat transfer, of the level of liquid subcooling, the heating power applied on the nucleation surface and the nucleation surface’s inclination. It was found that the phase change heat flux (i.e. the difference between the flux of evaporation and the flux of condensation) and the total heat flux (measured with fluxmeter and due to convection, conduction and phase change) decreased in the same order of magnitude when the level of subcooling was increased. When the heating power increased, the total heat flux increased whereas the phase change heat flux varied in a non-significant way. It was also found that the total heat flux depends on the nucleation surface inclination, whereas, for small angles, the phase change heat flux didn’t change. The analysis of those results lead to the conclusion that during boiling the liquid motions due to the bubble growth and departure play an important role in the heat transfer enhancement.
Similar content being viewed by others
References
Henry, C. D., Kim, J., 2004, “A Study of the effects of heater size, subcooling, and gravity level on pool boiling heat transfer”. Int. J. Heat Fluid Flow, 25, 262–273.
Barthes, M., Reynard, C., Santini, R. And Tadrist, L., 2006, “Experimental Study Of A Single Vapour Bubble Growth: Heat And Mass Transfer Analysis — Influence Of Non-Condensable Presence On The Onset Of Marangoni Convection”. Proc. of Thirteenth International Heat Transfer Conference, Australia.
Sodtke, C., Kern, J., Schweizer, N., Stephan, P., 2006, “High resolution measurements of wall temperature distribution underneath a single vapour bubble under low gravity conditions”. Int. J. Heat Mass Transfer, 49, 1100–1106
Myers, J. G., Yerramilli, V. K., Hussey, S. W., Yee, G. F., Kim, J., 2005, “Time and space resolved wall temperature and heat flux measurements during nucleate boiling with constant heat flux boundary conditions”. Int. J. Heat Mass Transfer, 48, 2429–2442.
Barthes, M., Reynard, C., Santini, R. AndTadrist, L, 2007, “Non-condensable gas influence on the Marangoni convection during a single vapour bubble growth in a subcooled liquid”. Europhysics letters, 77, 14001–14007.
Author information
Authors and Affiliations
Corresponding authors
Additional information
Paper was presented on the Second International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS October 26–28, 2007, Kyoto, Japan.
Rights and permissions
About this article
Cite this article
Barthes, M., Reynard, C., Santini, R. et al. Liquid vapour phase change on a single nucleation site: Heat and mass transfer. Microgravity Sci. Technol 19, 64–65 (2007). https://doi.org/10.1007/BF02915753
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02915753