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Journal of Enhanced Heat Transfer
インパクトファクター: 0.562 5年インパクトファクター: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN 印刷: 1065-5131
ISSN オンライン: 1026-5511

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v8.i2.30
pages 91-97

Evaporation Heat Transfer in Liquid Films Flowing Down Horizontal Smooth and Longitudinally Profiled Tubes

Vladimir G. Rifert
Department of Thermal Distillation & Heat-Mass Transfer Intensification, Kiev Polytechnical Institute, Kiev, Ukraine
Ju. V. Putilin
Urals State Technical University, Ekaterinburg, the Russian Federation
V. L. Podbereznyi
Joint Stock Company "NPO ECOCHEM", Ekaterinburg, the Russian Federation

要約

The heat transfer mechanism of a liquid film flowing down horizontal tubes is studied by experimental determination of local and average heat transfer coefficients. A method of its enhancement is developed which is based on the break-down of the heat boundary layer by longitudinal fins and grooves. The calculated functions and recommendations on geometrical parameters of profiling, which allow heat transfer enhancement by a factor of 1.4−1.9 and overall “vapor-liquid” heat transfer by a factor of 1.3−1.5, are given.


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