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Original title:
Experimental measuring of homogeneous nucleation rate of water in the presence of various gases in pulse expansion chamber
Authors: Lukianova, Tetiana ; Lukianov, Mykola ; Hrubý, Jan
Document type: Papers
Conference/Event: výroční konference České aerosolové společnosti /21./, Kutná hora (CZ), 20221003
Year: 2022
Language: eng
Abstract: 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 with water. In this case, the temperature of the mixture decreases and the supersaturation increases. This creates the conditions under which homogeneous nucleation is possible. The influence of carrier gases on homogeneous nucleation has been studied several times. The first publication was by Viisanen et al. (1993) and the last publication was by Campagna et al. (2021).\nWe performed experiments using the expansion pulse chamber developed by Wagner and Strey in 1984. The study was conducted in the presence of various in a range of nucleation temperatures of 220-260 K and nucleation pressures of 35-75 kPa at various concentrations of water vapor. experimental results shows nucleation rate J (number of droplets formed per unit of time and unit of volume) as function of supersaturation S (ratio of vapor pressure to the saturation pressure of water at given temperature) and temperature for the carrier gases.
Keywords: formation of new particles; homogeneous nucleation; nucleation rate
Project no.: EF16_019/0000753
Funding provider: GA MŠk
Host item entry: SBORNÍK XXI. VÝROČNÍ KONFERENCE ČESKÉ AEROSOLOVÉ SPOLEČNOSTI, ISBN 978-80-908653-0-3
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://cas.icpf.cas.cz/download/Sbornik_VKCAS_2022.pdf
Original record: https://hdl.handle.net/11104/0361755
Permalink: http://www.nusl.cz/ntk/nusl-669180
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Lukianova, Tetiana ; Lukianov, Mykola ; Hrubý, Jan
Document type: Papers
Conference/Event: výroční konference České aerosolové společnosti /21./, Kutná hora (CZ), 20221003
Year: 2022
Language: eng
Abstract: 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 with water. In this case, the temperature of the mixture decreases and the supersaturation increases. This creates the conditions under which homogeneous nucleation is possible. The influence of carrier gases on homogeneous nucleation has been studied several times. The first publication was by Viisanen et al. (1993) and the last publication was by Campagna et al. (2021).\nWe performed experiments using the expansion pulse chamber developed by Wagner and Strey in 1984. The study was conducted in the presence of various in a range of nucleation temperatures of 220-260 K and nucleation pressures of 35-75 kPa at various concentrations of water vapor. experimental results shows nucleation rate J (number of droplets formed per unit of time and unit of volume) as function of supersaturation S (ratio of vapor pressure to the saturation pressure of water at given temperature) and temperature for the carrier gases.
Keywords: formation of new particles; homogeneous nucleation; nucleation rate
Project no.: EF16_019/0000753
Funding provider: GA MŠk
Host item entry: SBORNÍK XXI. VÝROČNÍ KONFERENCE ČESKÉ AEROSOLOVÉ SPOLEČNOSTI, ISBN 978-80-908653-0-3
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://cas.icpf.cas.cz/download/Sbornik_VKCAS_2022.pdf
Original record: https://hdl.handle.net/11104/0361755
Permalink: http://www.nusl.cz/ntk/nusl-669180
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2025-01-19, last modified 2025-01-19