Assessment of condensation of water vapor in the mixing chamber by CFD method

The analyzed topic belongs to the field of design and operation of HVAC systems, focusing mainly on mixing chambers. The paper deals with problems of condensation and freezing of water vapour on walls of mixing chambers in a special case, when the partial pressure of the final resulting state of the...

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Main Authors: Vojkůvková Petra, Šikula Ondřej, Weyr Jan
Format: Article
Language:English
Published: EDP Sciences 2015-01-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/20159202112
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author Vojkůvková Petra
Šikula Ondřej
Weyr Jan
author_facet Vojkůvková Petra
Šikula Ondřej
Weyr Jan
author_sort Vojkůvková Petra
collection DOAJ
description The analyzed topic belongs to the field of design and operation of HVAC systems, focusing mainly on mixing chambers. The paper deals with problems of condensation and freezing of water vapour on walls of mixing chambers in a special case, when the partial pressure of the final resulting state of the mixture of warm moist air and colder air is located above the saturation limit. Experimental in situ methods and computer computational fluid dynamics (CFD) modelling method were used for processing. The main contribution of this work is the finding that partial condensation and freezing of water vapour may occur in local parts of the mixing chamber. It causes problems in terms of hygienic safety and service life of these devices. In particular it has been found that condensation and freezing of water vapour may occur even if relative humidity of the resulting mixture is about 70 %.
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spelling doaj.art-6e0f62877d2e4192a90e357014bfc4032022-12-21T22:06:56ZengEDP SciencesEPJ Web of Conferences2100-014X2015-01-01920211210.1051/epjconf/20159202112epjconf_efm2014_02112Assessment of condensation of water vapor in the mixing chamber by CFD methodVojkůvková PetraŠikula OndřejWeyr JanThe analyzed topic belongs to the field of design and operation of HVAC systems, focusing mainly on mixing chambers. The paper deals with problems of condensation and freezing of water vapour on walls of mixing chambers in a special case, when the partial pressure of the final resulting state of the mixture of warm moist air and colder air is located above the saturation limit. Experimental in situ methods and computer computational fluid dynamics (CFD) modelling method were used for processing. The main contribution of this work is the finding that partial condensation and freezing of water vapour may occur in local parts of the mixing chamber. It causes problems in terms of hygienic safety and service life of these devices. In particular it has been found that condensation and freezing of water vapour may occur even if relative humidity of the resulting mixture is about 70 %.http://dx.doi.org/10.1051/epjconf/20159202112
spellingShingle Vojkůvková Petra
Šikula Ondřej
Weyr Jan
Assessment of condensation of water vapor in the mixing chamber by CFD method
EPJ Web of Conferences
title Assessment of condensation of water vapor in the mixing chamber by CFD method
title_full Assessment of condensation of water vapor in the mixing chamber by CFD method
title_fullStr Assessment of condensation of water vapor in the mixing chamber by CFD method
title_full_unstemmed Assessment of condensation of water vapor in the mixing chamber by CFD method
title_short Assessment of condensation of water vapor in the mixing chamber by CFD method
title_sort assessment of condensation of water vapor in the mixing chamber by cfd method
url http://dx.doi.org/10.1051/epjconf/20159202112
work_keys_str_mv AT vojkuvkovapetra assessmentofcondensationofwatervaporinthemixingchamberbycfdmethod
AT sikulaondrej assessmentofcondensationofwatervaporinthemixingchamberbycfdmethod
AT weyrjan assessmentofcondensationofwatervaporinthemixingchamberbycfdmethod