Original title: Experimental study of homogeneous nucleation of water in carbon dioxide carrier gas
Authors: Lukianova, Tetiana ; Lukianov, Mykola ; Hrubý, Jan
Document type: Papers
Conference/Event: International Congress of Chemical and Process Engineering CHISA 2022 /26./, Prague (CZ), 20220821
Year: 2022
Language: eng
Abstract: The question of the impact of carbon dioxide on a life of our planet is becoming increasingly urgent. One of the impotent contributions of this influence is the dropwise condensation of water in the presence of carbon dioxide. To understand the condensation process, we need to know the thermodynamic parameters of nucleation and growth of water droplets. This process can be studied by adiabatic expansion of gas mixtures of carbon dioxide and water. In this case, the temperature of the mixture decreases and the supersaturation increases. This creates the conditions under which homogeneous nucleation is possible.\nIn this study, we present experimental results on the homogeneous nucleation of water with the carrier gases CO2 and argon. In addition, the real gas correction was applied to the temperature and supersaturation calculations. As it can be seen from experimental results there is significant difference in the nucleation rate behavior of mixtures with argon and CO2 carrier gases. CO2 appears to enhance the nucleation rate. The isotherms showed in our presentation have smaller slope for CO2 carrier gas. By application of the nucleation theorem this allows to conclude that the presence of CO2 decreases the number of water molecules forming the critical cluster.
Keywords: homogeneous nucleation; nucleation pulse chamber; nucleation rate
Project no.: EF16_019/0000753
Funding provider: GA MŠk
Host item entry: CHISA 2022 : sborník, program & seznam účastníků
Note: Související webová stránka: https://secure.confis.cz/chisa2022/UserPages/ContribListProgramPre.aspx

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0361754

Permalink: http://www.nusl.cz/ntk/nusl-669181


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Research > Institutes ASCR > Institute of Thermomechanics
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