Condensation of the air-steam mixture in a vertical tube condenser

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00303507" target="_blank" >RIV/68407700:21220/16:00303507 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/201611402037" target="_blank" >http://dx.doi.org/10.1051/epjconf/201611402037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201611402037" target="_blank" >10.1051/epjconf/201611402037</a>

Result language

angličtina

Original language name

Condensation of the air-steam mixture in a vertical tube condenser

Original language description

This paper deals with the condensation of water vapour in the presence of non-condensable air. Experimental and theoretical solutions of this problem are presented here. A heat exchanger for the condensation of industrial waste steam containing infiltrated air was designed. The condenser consists of a bundle of vertical tubes in which the steam condenses as it flows downwards with cooling water flowing outside the tubes in the opposite direction. Experiments with pure steam and with mixtures of steam with added air were carried out to find the dependence of the condensation heat transfer coefficient (HTC) on the air concentration in the steam mixture. The experimental results were compared with the theoretical formulas describing the cases. The theoretical determination of the HTC is based on the Nusselt model of steam condensation on a vertical wall, where the analogy of heat and mass transfer is used to take into account the behaviour of air in a steam mixture during the condensation process. The resulting dependencies obtained from the experiments and obtained from the theoretical model have similar results. The significant decrease in the condensation HTC, which begins at very low air concentrations in a steam mixture, was confirmed.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JE - Non-nuclear power engineering, energy consumption and utilization

OECD FORD branch

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Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EFM15 - Experimental Fluid Mechanics 2015

ISBN

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ISSN

2100-014X

e-ISSN

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Number of pages

4

Pages from-to

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Publisher name

EDP Sciences

Place of publication

Les Ulis Cedex A

Event location

Praha

Event date

Nov 17, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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