Measurements of the heater surface temperature are presented for pool boiling of distilled water in an accelerating system with various subcoolings and levels of heat flux. The ranges of the experimental variables are: heat flux between 0.19 MW/m2 and 1.5 MW/m2, accelerations normal to the flat heating surface from 1 to 100 times earth gravity, and liquid subcoolings between 0 K and 89 K. Increasing sub-cooling first produces an increase and then a decrease in wall superheat, with the eventual cessation of nucleate boiling for certain combinations of conditions. The increase in wall superheat is particularly enhanced at 10g, reaching a maximum value of 9 K at 1.05 MW/m2 with 60 K subcooling. This type of behavior is attributed to the interactions between the fluid temperature distribution in the immediate vicinity of the heater surface as it is influenced by natural convection, the activation of nucleation sites, and the influence of increased buoyancy on the heat transfer associated with each departing bubble.
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Nucleate Boiling With High Gravity and Large Subcooling
M. E. Ulucakli,
M. E. Ulucakli
Department of Mechanical Engineering, Lafayette College, Easton, PA 18042
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H. Merte, Jr.
H. Merte, Jr.
Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109
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M. E. Ulucakli
Department of Mechanical Engineering, Lafayette College, Easton, PA 18042
H. Merte, Jr.
Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109
J. Heat Transfer. May 1990, 112(2): 451-457 (7 pages)
Published Online: May 1, 1990
Article history
Received:
December 23, 1988
Revised:
July 18, 1989
Online:
May 23, 2008
Citation
Ulucakli, M. E., and Merte, H., Jr. (May 1, 1990). "Nucleate Boiling With High Gravity and Large Subcooling." ASME. J. Heat Transfer. May 1990; 112(2): 451–457. https://doi.org/10.1115/1.2910399
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