Study on Calculation of PVT Properties of CO2 in Supercritical States

DOI

10.2991/icaemt-15.2015.174How to use a DOI?

Keywords

equation of state, carbon dioxide, supercritical state, thermodynamic properties, calculation.

Abstract

In this paper, two equations of state, Exp-RK and 81-type Martin-Hou, were chosen and adopted to calculate P-V-T properties of CO2 in supercritical conditions, and the deviations of calculated pressure values from reference values are presented. The mean deviations of Exp-RK equation and 81-type Martin-Hou equation are 2.16% and 2.11% respectively, and the maximum deviations are 12.4% and -3.39% respectively. Study shows that the two equations are both applicable to the calculation of P-V-T properties of carbon dioxide in supercritical states. 81-type Martin-Hou has higher accuracy for the calculation of P-V-T properties in whole region and Exp-RK equation, a cubic equation of state, is simpler and more convenient for calculation of supercritical CO2 for engineering purposes.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hui Liu
PY  - 2015/08
DA  - 2015/08
TI  - Study on Calculation of PVT Properties of CO2 in Supercritical States
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 920
EP  - 924
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.174
DO  - 10.2991/icaemt-15.2015.174
ID  - Liu2015/08
ER  -