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Heat Transfer Research
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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v39.i4.50
pages 317-326

Condensation Heat Transfer on Noncircular Pipes in Stationary Vapor

V. Semenov
Magnitogorsk State University, 114 Lenin Str., Chelyabinsk, 455000, Russia
N. Nikitin
Magnitogorsk State University, 114 Lenin Str., Chelyabinsk, 455000, Russia

ABSTRAKT

There is a mathematical model for condensation heat transfer on noncircular horizontal tubes with optional cross-section profile. This model is developed taking into account the surface tension force. In this report, we present calculations for local and medium condensate-film thickness and average condensation heat transfer rate for three types of smooth horizontal tubes. The conditions to optimize the cross-section form are determined. These conditions are connected with condensate-film thickness allocation on the condensation surface. In addition, geometric restrictions on the form of these profiles are presented.


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