A VAPOR-PRESSURE EQUATION FROM EXTENDED ASYMPTOTIC-BEHAVIOR
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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 ChurchillUsagi correlation technique from heat transfer and fluid mechanics to thermodynamics. Copyright 1987 American Institute of Chemical Engineers