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Journal of Non-Equilibrium Thermodynamics

Founded by Keller, Jürgen U.

Editor-in-Chief: Hoffmann, Karl Heinz

Managing Editor: Prehl, Janett / Schwalbe, Karsten

Ed. by Michaelides, Efstathios E. / Rubi, J. Miguel

IMPACT FACTOR 2017: 1.633
5-year IMPACT FACTOR: 1.642

CiteScore 2017: 1.70

SCImago Journal Rank (SJR) 2017: 0.591
Source Normalized Impact per Paper (SNIP) 2017: 1.160

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Volume 40, Issue 3


A developed equation for predicting the vapor pressure of C-H-O hydrocarbons

Mehdi Reiszadeh / Ehsan Sanjari / Zahra Jali / Mohammad Saviz Baktash
Published Online: 2015-08-28 | DOI: https://doi.org/10.1515/jnet-2015-0008


Prediction of the available vapor pressure data in the case of C-H-O hydrocarbons led to derivation and recommendation of standard equations for this property. The accuracy of vapor pressure estimations is essential because it is used as a basis to calculate the acentric factor and the thermal and equilibrium properties. In this study, an accurately developed equation for calculation of vapor pressure is presented for 213 pure C-H-O hydrocarbons as a function of reduced temperature and critical pressure. With this equation, vapor pressures have been calculated and compared with the experimental data reported in the literatures for 213 pure hydrocarbons for more than 3800 data points, and the overall average absolute percentage deviation is only 0.286%. The accuracy of the developed equation has been compared to Antoine, Wagner, and other most used equations, and the comparison indicates that the developed method provides more accurate results than other methods used in this work.

Keywords: Antoine; C-H-O; correlation; pure hydrocarbons; vapor pressure

About the article

Received: 2015-03-12

Revised: 2015-07-18

Accepted: 2015-08-04

Published Online: 2015-08-28

Published in Print: 2015-09-01

Citation Information: Journal of Non-Equilibrium Thermodynamics, Volume 40, Issue 3, Pages 193–209, ISSN (Online) 1437-4358, ISSN (Print) 0340-0204, DOI: https://doi.org/10.1515/jnet-2015-0008.

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