TITLE

Propandiol vapor nucleation rates

AUTHOR(S)
Anisimov, M. P.; Nasibulin, A. G.; Timoshina, L. V.; Koropchak, J. A.
PUB. DATE
August 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p99
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Consideration of vapor-gas nucleation as binary vapor nucleation (instead widely used the one comportent approximation for nucleation of this system now) may lead the progress in the development of nucleation theory. Observations of phase transitions initiated by the carrier gas in the critical embryos of condensate can be a sufficiently convincing argument in this discussion. In order to confirm the role of the carrier gases received in the recent research, in present study 1,2-propanediol and 1,3-propanediol vapor nucleation rates were measured. Carbon dioxide (T[sub c]=304.2 K, P[sub c]=7.39 MPa) and sulfur hexafluoride (T[sub c] = 318.7 K, P[sub c]= 3.75 MPa) were chosen as the carrier gases, because of their low and convenient critical temperatures, T[sub c], and critical pressures, P[sub c]. Analysis of the experimental data shows that gas-carrier molecules are involved in new phase embryo formation. Vapor nucleation of investigated substances in a carrier gas atmosphere can be considered as nucleation of binary system.
ACCESSION #
5669614

 

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