Universität zu Köln

Deiters, Ulrich K. ORCID: 0000-0001-7669-5847 (2016). Comments on the Heidaryan-Jarrahian variant of the Redlich-Kwong equation of state. J. Supercrit. Fluids, 117. S. 13 - 18. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-8162

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Abstract

The Heidaryan-Jarrahian variant of the Redlich-Kwong equation of state (RKHJ) for carbon dioxide is a cubic equation of state as far as the calculation of densities for given pressures and temperatures is concerned, but a complicated pressure-implicit equation with respect to the calculation of pressures for given densities and temperatures. In this work, it is shown that how the RKHJ equation can be used to calculate other properties than the density. The RKHJ equation is found to be applicable for supercritical temperatures only; it represents densities above 320 K well. It shows unphysical behavior at low densities because of a logarithmic pressure dependence of its attraction term. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Deiters, Ulrich K. UNSPECIFIED orcid.org/0000-0001-7669-5847 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-258083
DOI:	10.1016/j.supflu.2016.06.014
Journal or Publication Title:	J. Supercrit. Fluids
Volume:	117
Page Range:	S. 13 - 18
Date:	2016
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	1872-8162
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CARBON-DIOXIDE Multiple languages Chemistry, Physical; Engineering, Chemical Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/25808