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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i1-3.160
8 pages

Heat Transfer in Boiling of Liquid Films

S. A. Efimova
Moscow Power Engineering Institute (Technical University), Russia
Yu. M. Pavlov
Moscow Power Engineering Institute (Technical University), Russia

RESUMO

The work is devoted to the heat transfer in boiling of films of various liquids formed by wetting a heat generating surface from a sprayer in the form of a capillary tube. A physical model of the incipience of a vapor phase in thin layers of liquid in the absence of thermal gravitational convection is presented and on its basis a computational relation is given for the temperature head in boiling-up ΔTs.b.. An interpolation dependence of ΔTs.b. on the height of the column (layer thickness) of liquid on a heat generating surface is suggested which makes it possible to estimate this parameter in the layers of liquid in which there is nondeveloped gravitational convection.


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