Homogeneous water nucleation in carbon dioxide-nitrogen mixtures: Experimental study on pressure and carrier gas effects

0543198 - ÚT 2022 RIV US eng J - Journal Article
Campagna, M. M. - Hrubý, Jan - van Dongen, M. E. H. - Smeulders, D. M. J.
Homogeneous water nucleation in carbon dioxide-nitrogen mixtures: Experimental study on pressure and carrier gas effects.
Journal of Chemical Physics. Roč. 154, č. 15 (2021), č. článku 154301. ISSN 0021-9606. E-ISSN 1089-7690
R&D Projects: GA MŠMT(CZ) EF16_019/0000753
Institutional support: RVO:61388998
Keywords : homogeneous nucleation * water * nitrogen * carrier gas effect * surface tension
OECD category: Thermodynamics
Impact factor: 4.304, year: 2021
Method of publishing: Open access
https://aip.scitation.org/doi/10.1063/5.0044898

New homogeneous nucleation experiments are presented at 240 K for water in carrier gas mixtures of nitrogen with carbon dioxide molar fractions of 5%, 15%, and 25%. The pulse expansion wave tube is used to test. As pressure and carbon dioxide content are increased, the nucleation rate increases accordingly. This behavior is attributed to the reduction in the water surface tension by the adsorption of carrier gas molecules. Theoretical model appears to strongly overestimate the pressure and composition dependence. At relatively low pressures, a reduction in the nucleation rates is found due to an incomplete thermalization of colliding clusters and carrier gas molecules. The observed decrease in the nucleation rate is supported by the theoretical model of Barrett, generalized here for water in multi-component carrier gas mixtures.
Permanent Link: http://hdl.handle.net/11104/0320672