Homogeneous nucleation of water in synthetic air

M.A.L.J. Fransen, E. Sachteleben, J. Hruby, D.M.J. Smeulders

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

1 Citation (Scopus)

Abstract

Homogeneous nucleation rates for water vapor in synthetic air are measured by means of a Pulse-Expansion Wave Tube (PEWT). A comparison of the experimental nucleation rates with the Classical Nucleation Theory (CNT) shows that a more elaborated model is necessary to describe supercooled water nucleation at elevated pressures (10 bar). CNT is about 3 orders of magnitude off in case of our measurements. The overall trends, however, are predicted reasonably well by CNT. The size of the critical cluster (n*CNT) is predicted to be about 29 water molecules. The size of the critical cluster is obtained experimentally as well using the Nucleation Theorem. The result for water nucleation at a nucleation pressure of 10 bar and nucleation temperature of approximately 238 K is: n* = 21±1 water molecules.
Original languageEnglish
Title of host publicationProceedings of the 19th International Conference on Nucleation and Atmospheric Aerosols, 23-28 June 2013, Fort Collins, Colorado
EditorsP.J. DeMott, C.D. O'Dowd
Place of PublicationNew York
PublisherAmerican Institute of Physics
Pages124-127
ISBN (Print)978-0-7354-1152-4
DOIs
Publication statusPublished - 2013
Event19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA 2013), June 24-28, 2013, Fort Collins, CO, USA - Colorado State University, Fort Collins, CO, United States
Duration: 23 Jun 201328 Jun 2013
http://chem.atmos.colostate.edu/icnaa/

Publication series

NameAIP Conference Proceedings
Volume1527
ISSN (Print)0094-243X

Conference

Conference19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA 2013), June 24-28, 2013, Fort Collins, CO, USA
Abbreviated titleICNAA 2013
CountryUnited States
CityFort Collins, CO
Period23/06/1328/06/13
Internet address

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