Marangoni heat transfer in subcooled nucleate pool boiling.
Author(s) : PETROVIC S., ROBINSON T., JUDD R. L.
Type of article: Article
Summary
The liquid motion induced by surface tension variation, termed the Marangoni effect, and its contribution to boiling heat transfer has been an issue of much controversy. Boiling heat transfer theory, although acknowledging its existence, considers its contribution to heat transfer to be insignificant in comparison with buoyancy induced convection. However, recent microgravity experiments have shown that although the boiling mechanism in a reduced gravity environment is different, the corresponding heat transfer rates are similar to those obtained under normal gravity conditions, raising questions about the validity of the assumption. An experimental investigation was performed in which distilled water was gradually heated to boiling conditions on a copper heater surface at four different levels of subcooling. Photographic investigation of the bubbles appearing on the surface was carried out in support of the measurements. The results obtained indicate that Marangoni convection associated with the bubbles formed by the air dissolved in the water which emerged from solution when the water was heated sufficiently, significantly influenced the heat transfer rate in subcooled nucleate pool boiling. A heat transfer model was developed in order to explain the phenomena observed.
Details
- Original title: Marangoni heat transfer in subcooled nucleate pool boiling.
- Record ID : 2005-1154
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 47 - n. 23
- Publication date: 2004/11
Links
See other articles in this issue (8)
See the source
Indexing
-
Themes:
Thermodynamic measurements;
Mass transfer - Keywords: Pool boiling; Calculation; Heat transfer; Surface tension; Research; Subcooling; Modelling; Convection; Nucleate boiling
-
Effects of dissolved gas content on pool boilin...
- Author(s) : YOU S. M., SIMON T. W., COHEN A. bar-, HONG Y. S.
- Date : 1995/08
- Languages : English
- Source: J. Heat Transf. - vol. 117 - n. 3
View record
-
LATENT HEAT TRANSPORT IN FORCED BOILING FLOW.
- Author(s) : BILICKI Z.
- Date : 1983/04
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 26 - n. 4
View record
-
An experimental study of saturated pool boiling...
- Author(s) : GUO Z., GENK M. S. el-
- Date : 1992/09
- Languages : English
- Source: International Journal of Heat and Mass Transfer - vol. 35 - n. 9
View record
-
Pool boiling.
- Author(s) : LALLEMAND M.
- Date : 1993/10
- Languages : English
- Source: Int. chem. Eng. - vol. 33 - n. 4
View record
-
Transient boiling from inclined and downward-fa...
- Author(s) : GENK M. S. el-, GUO Z.
- Date : 1993/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 16 - n. 6
- Formats : PDF
View record