A vapor pressure equation from extended asymptotic behavior

The vapor pressure equation proposed here possesses several interesting features and does an excellent job representing data. The currently accepted theoretical behavior in the regions of the triple point and the critical point are intrinsic features of the expression. The equation is valid over the...

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Bibliographic Details
Published in:AIChE journal 1987-09, Vol.33 (9), p.1550-1556
Main Authors: Iglesias-silva, G. A., Holste, J. C., Eubank, P. T., Marsh, K. N., Hall, K. R.
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Liquid-liquid equilibria
Liquid-solid equilibria
Liquid-vapor equilibria
Others (including liquid-liquid-vapor equilibria)
Phase equilibria
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Summary:The vapor pressure equation proposed here possesses several interesting features and does an excellent job representing data. The currently accepted theoretical behavior in the regions of the triple point and the critical point are intrinsic features of the expression. The equation is valid over the entire range from the triple point to the critical point and yet possesses only three adjustable constants. Results are presented for a small but chemically diverse set of compounds. This work represents an extension of the Churchill‐Usagi correlation technique from heat transfer and fluid mechanics to thermodynamics.
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.690330915