A NEW METHOD FOR DETERMINING BINARY DIFFUSION-COEFFICIENTS IN DILUTE CONDENSABLE VAPORS

Authors
LUIJTEN CCM BOSSCHAART KJ VANDONGEN MEH
Citation
Ccm. Luijten et al., A NEW METHOD FOR DETERMINING BINARY DIFFUSION-COEFFICIENTS IN DILUTE CONDENSABLE VAPORS, International journal of heat and mass transfer, 40(15), 1997, pp. 3497-3502
Citations number
11
Categorie Soggetti
Mechanics,"Engineering, Mechanical",Thermodynamics
Journal title
International journal of heat and mass transfer → ACNP
ISSN journal
00179310
Volume
40
Issue
15
Year of publication
1997
Pages
3497 - 3502
Database
ISI
SICI code
0017-9310(1997)40:15<3497:ANMFDB>2.0.ZU;2-G
Abstract
A new method for determining binary diffusion coefficients in dilute c ondensable vapors is outlined. The method is based on condensational d roplet growth. It can be used in a large range of pressures and temper atures, even below the Freezing point of the condensing vapor. Results are obtained for the mixtures water-nitrogen and water-helium in the pressure range 11-44 bar. The product of pressure and diffusivity is f ound to be constant. New temperature correlations for the binary diffu sion coefficient are proposed, valid for the range 235-375 K. For wate r-nitrogen the temperature dependence is significantly stronger than p redicted by the Fuller correlation; for water-helium, it is weaker. (C ) 1997 Elsevier Science Ltd.