Abstract
The results of an investigation into the heat transfer in a turbulent water film that is conveyed by an airflow along the hydraulically smooth heat-transfer surface of a tube are presented. The effect of the liquid droplets entrained from the film surface on the final temperature of the coolants due to moisture evaporation from the surfaces of the film and the droplets, as well as due to their renewal, is established. The dependences are presented for calculating the heat-transfer coefficient.
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References
N. A. Voinov, “The Process of Fermentation of the Fodder Protein on Hydrolyzate in Film Apparatuses; the Intensification and Calculation Methods,” Doctoral Dissertation in Technical Sci. (Krasnoyarsk, 1995).
N. A. Voinov, E. V. Sugak, N. A. Nikolaev, and S. M. Voronin, Film Bioreactors (BORGES, Krasnoyarsk, 2001) [in Russian].
G. Gimbutis, Heat Transfer During Gravitational Flow of Liquid Films (Mokslas, Vil’nus, 1988) [in Russian].
Yu. M. Gandzyuk, “Processes of Hydrodynamics and Heat Transfer During the Treatment of a Gravitational Film of Alkaline Solutions, “Candidate Dissertation in Technical Sciences (Kiev, 1986).
H. Brauer, “Stromung und Warmeubergang bei Rieselfilmen,” VDI-Forschungsheft 22(457), S. 40 (1956).
V. P. Carey, “A Note on Heat Transfer to Turbulent Liquid Falling Films at High Prandtl Number,” AIChE Journal, 31(9), 1575–1577 (1985).
I. G. Blyakher, L. Ya. Zhivaikin, A. A. Shekhtman et al., “Effectiveness of Operation of Film-type Heat Exchangers in Sulfuric-Acid Production,” Khim. Prom. No. 2, 46–47 (1978).
V. L. Rakitskii, “Hydrodynamics and Heat Transfer During Liquid Film Flow over a Smooth Hydrophobic Surface,” Cand. Dissertation in Technical Sci. (Kiev, 1990).
K. J. Simonek, “A Model of Eddy Viscosity and Eddy Diffusivity of Heat,” Int. J. Heat Mass Transfer, 26, p. 479 (1983).
V. N. Sokolov and I. V. Domanskii, Gas-Liquid Reactors, (Mashinostroenie, Leningrad (1976) [in Russian].
S. S. Kutateladze and V. E. Nakoryakov, Heat and Mass Transfer and Waves in the Gas-Liquid Systems (Nauka, Novosibirsk, 1984) [in Russian].
I. A. Mudawwar and M. A. El-Masri, “Momentum and Heat Transfer across Freely Falling Turbulent Liquid Films,” In. J. Multiphase Flow, 12, 771–790 (1986).
G. I. Hubbard, A. F. Mills, and D. K. Chung, “Heat Transfer Across a Turbulent Falling Film with Concurrent Vapor Flow,” J. Heat Transfer 98, 319–320 (1976).
E. N. Ganic and K. Mastanaiah, Fundamentals of Low Reynolds Number Forced Convection. University of Illinois at Chicago Circle, Chicago: 1980.
V. I. Kholostykh, I. G. Blyakher, and A. A. Shekhtman, “Flow of the Liquid Film over the Vertical Surface,” Inzh. Fiz. Zhurn. 22(3), 494–498 (1972).
T. Fujita and T. Ueda. “Heat Transfer to Falling Liquid Films and Film Breakdown-I,” Int. J. Heat Mass Transfer, 21, 97–107 (1976).
J. Huhn, “Zur Auslegung von Fallfilmapparaten,” Chem. Techn., No. 39, 11–13 (1987).
B. G. Ganchev and A. B. Musvik, “The Experimental Investigation of the Processes of Hydrodynamics and Heat Transfer During the Downward Motion of a Two-Phase Flow in the Annular and Dispersed-Annular Regimes,” Inzh. Fiz. Zhurn 31(1), 13–29 (1976).
A. N. Khoze, S. V. Dunaev, and V. A. Sparin, “Heat and Mass Transfer in Two-Phase Flow in Rectangular Channels,” Energetika, No. 4, 144–146 (1975).
N. A. Voinov, A. N. Nikolaev, N. A. Nikolaev, “Heat Transfer in the Film of Liquid Flowing Down over the Smooth and Rough Surfaces,” Teor. Osnovy Khim. Techn. No. 1, 28–32 (1998).
N. N. Kulov, “Hydrodynamics and Mass Transfer in Downward Two-Phase Film-Dispersed Flows,” Doctoral Dissertation in Technical Sci. (Moscow, 1984).
V. B. Kogan and M. A. Kharisov, The Equipment for Separation of Mixtures in a Vacuum (Mashinostroenie, Leningrad, 1976) [in Russian].
T. Ueda and T. Tanaka, “Studies of Liquid Films in Two-Phase Annular-Mist Flow Regions. Part 1. Downflow in Vertical Tube,” Bull. ISME. 17(107), 603–613 (1974).
E. J. Davis, S. C. Hung, and S. Arciero, “An Analogy for Heat Transfer with Wavy/Stratified Gas-Liquid Flow,” AlChE Journal 21(3), 872–878 (1975).
A. Ya. Didenko, G. P. Dubrovskii, V. A. Leonov, et al., “Investigation into the Central Region of the Water-Air Flow in the Dispersed-Annular Flow Regime,” Voprosy Teplofiziki Yadernykh Reaktorov, Issue No. 3, p. 13–32 (1971).
L. Ya. Zhivaikin, “On the Thickness of the Water Film on Vertical Surfaces of Apparatuses,” Trudy Ural’skogo NIIKhIM, Issue No. 14, 55–60 (1967).
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Original Russian Text © N.A. Voinov, N.A. Eremenko, N.A. Nikolaev, 2007, published in Teploenergetika.
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Voinov, N.A., Eremenko, N.A. & Nikolaev, N.A. Heat transfer in a water film falling along a heat-transfer surface during its contact with air. Therm. Eng. 54, 324–331 (2007). https://doi.org/10.1134/S0040601507040143
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DOI: https://doi.org/10.1134/S0040601507040143