Buoyancy Effects on Liquid-Nitrogen Film Boiling in Vertical Flow
Film boiling occurs when a continuous vapor film exists between the heat-transfer surface and the liquid. The evaporation of liquid is essentially on the liquid-vapor interface with heat transfer across the film primarily by conduction. This mode of heat transfer has been analyzed for both the pool (nonflow) and forced-flow system. In these analyses, both buoyancy and viscous forces are known to influence the thickness and stability of the vapor film which are recognized as controlling parameters in this heat-transport mechanism.
KeywordsHeat Flux Test Section Wall Temperature Inlet Velocity Critical Heat Flux
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- 1.C.A. Heath and C. P. Costello, “The Effect of the Orientation and Magnitude of Gravity Fields on Film Boiling from a Flat Plate,” Univ. of Washington, College of Engineering, Seattle, Wash. (May 1964).Google Scholar
- 2.M. L. Pomerantz, “Film Boiling on a Horizontal Tube in Increased Gravity Fields,” ASME Paper No. 63-HT-17 (1963).Google Scholar
- 4.Y. Y. Hsu, Ph.D. Dissertation, University of Illinois, Urbana, Ill. (1958).Google Scholar
- 5.Y. Y. Hsu and J. W. Westwater, Chem. Eng. Progr. Symp. Ser., 56 (30): 15 (1960).Google Scholar
- 6.R. J. Simoneau and F. F. Simon, “A Visual Study of Velocity and Buoyancy Effects on Boiling Nitrogen,” NASA TN D-3354 (Sept. 1966).Google Scholar
- 7.S. S. Papell, R. J. Simoneau, and D. D. Brown, “Buoyancy Effects on Critical Heat Flux of Forced Convective Boiling in Vertical Flow,” NASA TN D-3672 (1966).Google Scholar
- 8.W. H. McAdams, Heat Transmission, 3rd Edition, McGraw-Hill Book Co., New York (1954), p. 19.Google Scholar
- 9.W. F. Laverty and W. M. Rohsenow, “Film Boiling of Saturated Liquid Flowing Upward Through a Heated Tube: High Vapor Quality Range,” TR No. 9857–32, Dept. of Mech. Eng., MIT, Cambridge, Mass. (Sept. 1964).Google Scholar
- 10.S. Rankin and J. A. Gerster, “Heat Transfer to Boiling Liquids Under Conditions of High Temperature Differences and Forced Convection,” Univ. of Delaware, Newark, Del., Rept. UD-FB-13 (1958).Google Scholar