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Evaluation of Heat Transfer Shear of Different Mechanisms in Flow Subcooled Nucleate Boiling
Mohammadreza Nematollahi, Mohammad Nazififard
Pages - 37 - 43     |    Revised - 25-02-2010     |    Published - 31-03-2010
Volume - 4   Issue - 1    |    Publication Date - March 2010  Table of Contents
Nucleate Boiling, Heat Transfer, Quenching, Turbulence, Bubble
Since the mean characteristic of nucleate boiling is bubble formation and collapse near the heating surface, in this study attempts have been made to investigate heat transfer effects due to the bubbles ebullition and collapse cycle. All possible heat transfer mechanisms are studied qualitatively and quantitatively. For quantitative calculation of the heat transfer portion by each of the introduced mechanisms, a series of bubble parameters was selected from the experimental data provided by the high-speed photography of a heated rod containing nucleate boiling regime on its surface. According to the present results, the portion of the mechanisms such as latent heat transfer, super heated layer mixing and single-phase heat transfer are between 6~15%, 12~17%, and 3~5%, respectively. The results also show that the two mechanisms of the turbulence induced by the bubble formation and collapse and quenching have the main performance in transferring heat from the heating surface to the bulk flow. The shared percentage of these two mechanisms is estimated between 23~58.5% and 20.5~40% respectively.
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1 Omatskii A.P. and Vinyarskii L.S., 1965, "Critical Heat Transfer in the Forced Motion of Under Heated Water-Alcohol Mixtures in Tubes of Diameter 0.5mm", Teplofizika Vyskikh Temperatur (High Temperature), Vol. 3, No. 6, pp. 881-3.
2 Vendervort C., Bergles A. E. and Jensen M. K., "Heat Transfer Mechanisms in Very High Heat Flux Subcooled Boiling", Fundamentals of Subcooled Flow Boiling, 1992, HTD-Vol. 217, pp. 1-9.
3 Nematollahi M. R., ”Doctoral Thesis on Fundamental Study of Vibration Phenomena Induced by Subcooled Flow Boiling.” Dept. of Quantum Science and Energy Engineering High Loading Energy Engineering Laboratory.February, 1999.
4 Maruyama S., shoji M., “Numerical Simulation of Boiling Heat Transfer.”, department of mechanical Engineering, faculty of Engineering the University of Tokyo, Tokyo, Japan.
5 Del Valle M. V. H. and Kenning D. B. R., "Subcooled Flow Boiling at High Heat Flux", Int. J. Heat &Mass Transfer, 1985, Vol.28, pp.1907-1920.
6 Ebrahimi M. Master thesis on Behaviour of Bubble in Nucleate Boiling, Shiraz University, Shiraz, Iran, June 2002.
7 Manon E., Mimouni S. “3D Simulations Of Subcooled Boiling Flows with ASTRID, Comparisons with The DEB Experimental Results”, 2001.
8 Giese T., Laurien E.,"A Three Dimensional Numerical Model for The Analysis of Pipe Flow with Cavitation ”, Institute of Nuclear Technology and Energy Systems (IKE) University of Stuttgart, Pfaffenwaldring 31, D-70550 Stuttgart, Germany.
9 Ronald D. and Meng X.,” Local subcooled flow boiling model development”. Prairie View A&M University, College of Engineering and Architectore Thermal Science Research Center, 1996.
10 Wolvering, Tube Heat Transfer Data Book."Boiling Heat Transfer", P 255-265.
11 Das A.K., Das P.K., Saha P. ,”Heat transfer during pool boiling based on evaporation from micro and macrolayer”, International Journal of Heat and Mass Transfer 49 (2006) 3487–3499.
Associate Professor Mohammadreza Nematollahi
- Iran
Dr. Mohammad Nazififard
- Iran