Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-28T06:00:54.976Z Has data issue: false hasContentIssue false
  • English
  • Français

Turbulent Film Boiling on A Non-Isothermal Horizontal Elliptical Tube with Steam Heating Surface

Published online by Cambridge University Press:  05 May 2011

H.-P. Hu ,
C.-C. Wang  and
C.-K. Chen
H.-P. Hu*
Affiliation:
Department of Marine Engineering, National Taiwan Ocean University, Keelung, Taiwan 20224, R.O.C.
C.-C. Wang*
Affiliation:
Department of Mechanical and Computer-Aided Engineering, Feng chia University, Taichung, Taiwan 40724, R.O.C.
C.-K. Chen*
Affiliation:
Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.
*
* Assistant Professor, corresponding author
** Professor
** Professor
Get access

Abstract

The present theoretical study investigates turbulent film boiling on an elliptical tube with steam heating surface inside. The flow direction of the heating steam is opposite to the vapor film of the outer tube. Thus, the surface temperature is expressed by cosine function. The effect of temperature amplitude, eccentricity, nonlinear viscosity, nonlinear thermal conductivity, radiation and eddy diffusivity are all included in the present analysis. And the paper also discusses the vapor thickness, local Nusselt number and mean Nusselt number. The result shows, first, under the free convection turbulent film boiling with temperature variation, the bigger the temperature amplitude value is, the better the heat transfer efficiency is. Next, the increase of the eccentricity values will bring out the increase of the Nusselt number. Finally, a comparison between the results of the present study and those reported in a previous theoretical data is provided.

Keywords

AmplitudeEccentricityEddy diffusivity.
Type
Articles
Information
Journal of Mechanics , Volume 26 , Issue 3 , September 2010 , pp. 287 - 292
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Bromley, L. A., “Heat Transfer in Stable Film Boiling,” ChemicalEng Progress, 46, pp. 221–227 (1950).Google Scholar
2.Nishikawa, K. and Ito, T., “Two-Phase Boundary-Layer Treatment of Free Convection Film Boiling,” International Journal of Heat and Mass Transfer, 9, pp. 109–115(1966).Google Scholar
3.Jordan, D. P., “Film and Transition Boiling,” Advances in Heat Transfer, 5, pp. 55–128 (1968).CrossRefGoogle Scholar
4.Kalinin, E. K., Berlin, I. I. and Kostyuk, V. V., “Film-Boiling Heat Transfer,” Advances in Heat Transfer, 11, pp. 51–189 (1975).CrossRefGoogle Scholar
5.Sakurai, A., Shiotsu, M. and Hata, K., “A General Correlation for Pool Film Boiling Heat Transfer from a Horizontal Cylinder to Subcooled Liquid: Part 1-A Theoretical Pool Film Boiling Heat Transfer Models Including Radiation Contributions and its Analytical Solution,” Journal of Heat Transfer, 112, pp. 430–440 (1990).CrossRefGoogle Scholar
6.Sakurai, A., Shiotsu, M. and Hata, K., “A General Correlation for Pool Film Boiling Heat Transfer from a Horizontal Cylinder to Subcooled Liquid: Part 2-Experimental Data for Varios Liquids and its Correlation,” Journal of Heat Transfer, 112, pp. 441–450 (1990).CrossRefGoogle Scholar
7.Huang, L. and Witte, L. C, “Forced Convection Film Boiling Heat Transfer Around Horizontal Cylinders in Highly Subcooled,” ASME/JSME Thermal Engineering Conference, 2, pp. 315–322 (1995).Google Scholar
8.Yang, S. A. and Hsu, C. H., “A Simple Analysis of Free Convection Film Boiling Around a Horizontal Elliptical Tube with Surface Tension,” Journal of Heat Transfer, 119, pp. 636–638(1997).CrossRefGoogle Scholar
9.Shih, M.-H., Luo, W.-J. and Yu, K.-C, “Evaporation of Non-Newtonian Fluid in Porous Medium Under Mixed Convection,” Journal of Mechanics, 24, pp. 153–162 (2008).CrossRefGoogle Scholar
10.Sarma, P. K. and Sharma, K. V., “Turbulent Film Boiling from a Vertical Non-Isothermal Surface,” Heat and Mass Transfer, 25, pp. 93–99 (1990).Google Scholar
11.Sarma, P. K., Subrahmanyam, T., Rao, V. D. and Bergles, A. E., “Turbulent Film Boiling on a Horizontal Cylinder,” International Journal of Heat and Mass Transfer, 44, pp. 207–214(2001).CrossRefGoogle Scholar
12.Hu, H. P. and Chen, C. K., “A Theoretical Study of Free Convection in Turbulent Film Boiling on a Horizontal Elliptical Tube,” Heat and Mass Transfer, 44, pp. 1171–1178(2008).CrossRefGoogle Scholar
13.Kato, H., Shiwaki, N. N. and Hirota, M., “On the Turbulent Heat Transfer by Free Convection from a Vertical Plate,” International Journal of Heat and Mass Transfer, 11, pp. 1117–1125(1968).Google Scholar
14.Ponerantz, M. L., “Film Boiling on a Horizontal Tube in Increase Gravity Fields,” Journal of Heat Transfer, 86, pp. 213–219(1964).CrossRefGoogle Scholar