Velasco, Santiago and White, Juan A and Srinivasan, Kandadai and Dutta, Pradip (2012) Waring and Riedel Functions for the Liquid-Vapor Coexistence Curve. In: Industrial & Engineering Chemistry Research, 51 (7). pp. 3197-3202.
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Abstract
There exists a minimum in the Waring function, psi(T) = -d(ln p)/d(1/T), and in the Riedel function, alpha(T) = d(ln p)/d(In T), in the liquid-vapor coexistence curve for most fluids. By analyzing National Institute of Standards and Technology data for the molar enthalpy of vaporization and the compressibility variation at the liquid-vapor phase change of 105 fluids, we find that the temperatures of these minima are linearly correlated with the critical temperature, T-c. Using reduced coordinates, we also demonstrate that the minima are well-correlated with the acentric factor. These correlations are used for testing four well-known vapor pressure equations in the Pitzer corresponding states scheme.
Item Type: | Journal Article |
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Publication: | Industrial & Engineering Chemistry Research |
Publisher: | American Chemical Society |
Additional Information: | Copyright of this article belongs to American Chemical Society. |
Department/Centre: | Division of Mechanical Sciences > Mechanical Engineering |
Date Deposited: | 10 Apr 2012 07:34 |
Last Modified: | 10 Apr 2012 07:34 |
URI: | http://eprints.iisc.ac.in/id/eprint/44165 |
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