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Temperature Dependence of Heat and Mass Transfer in a Forced Convective Duct Flow with and without Condensation on one Wall

Brückner, Christian and Westhoff, Andreas and Wagner, Claus (2018) Temperature Dependence of Heat and Mass Transfer in a Forced Convective Duct Flow with and without Condensation on one Wall. In: 5th International Conference on Experimental Fluid Mechanics, pp. 48-53. International Conference on Experimental Fluid Mechanics, 2. - 4. July 2018, München, Deutschland. DOI: 10.18726/2018_2 ISBN 978-3-943207-32-3

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Official URL: https://athene-forschung.unibw.de/doc/124421/124421.pdf

Abstract

Experiments were conducted to investigate condensation in a convective moist airflow in a vertical duct with one cooled wall. Based on temperature and moisture measurements the heat and mass transfer were determined by means of the thermal balance for fixed temperature differences between inflow, wall and dew point temperatures for Re = 2000, 4000, 8000 in a range of wall temperatures T_wall = 1-10 °Celsius. By comparing results obtained in moist airflow with condensation and dry airflow under similar conditions, the impact of the latent heat transfer on the global heat transfer is investigated. While the mass transfer revealed no significant temperature dependence, the condensation heat transfer showed an increase for elevated temperatures. The release of latent heat signficantly changed the heat transfer mechanism due to the release of heat of evaporation and the layer of condensate on the cooled wall.

Item URL in elib:https://elib.dlr.de/120318/
Document Type:Conference or Workshop Item (Speech)
Title:Temperature Dependence of Heat and Mass Transfer in a Forced Convective Duct Flow with and without Condensation on one Wall
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Brückner, ChristianChristian.Brueckner (at) dlr.deUNSPECIFIED
Westhoff, AndreasAndreas.Westhoff (at) dlr.deUNSPECIFIED
Wagner, ClausClaus.Wagner (at) dlr.deUNSPECIFIED
Date:2018
Journal or Publication Title:5th International Conference on Experimental Fluid Mechanics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.18726/2018_2
Page Range:pp. 48-53
ISBN:978-3-943207-32-3
Status:Published
Keywords:Convection, Condensation
Event Title:International Conference on Experimental Fluid Mechanics
Event Location:München, Deutschland
Event Type:international Conference
Event Dates:2. - 4. July 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Fluid Systems, GO
Deposited By: Brückner, Christian
Deposited On:24 Jul 2018 14:04
Last Modified:24 Jul 2018 14:04

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