Flow boiling heat transfer with pure fluids comprises convective and nucleate boiling components. In flow boiling of binary mixtures, in addition to the suppression effects present in pool boiling, the presence of flow further modifies the nucleate boiling characteristics. In the present work, the flow boiling correlation by Kandlikar (1990, 1991b) for pure fluids is used as the starting point, and the mixture effects derived in Part I (Kandlikar, 1998) of this paper are incorporated. Three regions are defined on the basis of a volatility parameter, V1 = (cp/ΔhLG)(k/D12)1/2|(y1 − x1)dT/dx1|. They are: region I—near azeotropic, region II—moderate diffusion-induced suppression, and region III—severe diffusion-induced suppression. The resulting correlation is able to correlate over 2500 data points within 8.3 to 13.3 percent mean deviation for each data set. Furthermore, the α–x trend is represented well for R-12/R-22, R-22/R-114, R-22/R-152a, R-500, and R-132a/R-123 systems. Electrically heated stainless steel test sections as well as fluid-heated copper test sections are both covered under this correlation.
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Boiling Heat Transfer With Binary Mixtures: Part II—Flow Boiling in Plain Tubes
S. G. Kandlikar
S. G. Kandlikar
Mechanical Engineering Department, Rochester Institute of Technology, Rochester, New York 14623-5604
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S. G. Kandlikar
Mechanical Engineering Department, Rochester Institute of Technology, Rochester, New York 14623-5604
J. Heat Transfer. May 1998, 120(2): 388-394 (7 pages)
Published Online: May 1, 1998
Article history
Received:
November 19, 1996
Revised:
January 30, 1998
Online:
December 5, 2007
Citation
Kandlikar, S. G. (May 1, 1998). "Boiling Heat Transfer With Binary Mixtures: Part II—Flow Boiling in Plain Tubes." ASME. J. Heat Transfer. May 1998; 120(2): 388–394. https://doi.org/10.1115/1.2824262
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