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A new modification on RK EOS for gaseous CO2 and gaseous mixtures of CO2 and H2O
Royal Institute of Technology, Sweden.
Royal Institute of Technology, Sweden.
Mälardalen University, School of Sustainable Development of Society and Technology. Royal Institute of Technology, Sweden. (PRO)ORCID iD: 0000-0003-0300-0762
2006 (English)In: International journal of energy research (Print), ISSN 0363-907X, E-ISSN 1099-114X, Vol. 30, no 3, p. 135-148Article in journal (Refereed) Published
Abstract [en]

To develop an equation of state with simple structure and reasonable accuracy for engineering application, Redlich-Kwong equation of state was modified for gaseous CO2 and CO2-H2O mixtures. In the new modification, parameter a of gaseous CO2 was regressed as a function of temperature and pressure from recent reliable experimental data in the range: 220-750 K and 0.1-400 MPa. Moreover, a new mixing rule was proposed for gaseous CO2-H2O mixtures. To verify the accuracy of the new modification, densities were calculated and compared with experimental data. The average error is 1.68% for gaseous CO2 and 0.93% for gaseous mixtures of CO2 and H2O. Other thermodynamic properties, such as enthalpy and heat capacities of CO2 and excess enthalpy of gaseous CO2-H2O mixtures, were also calculated; results fit experimental data well, except for the critical region.

Place, publisher, year, edition, pages
John Wiley & Sons, Ltd. , 2006. Vol. 30, no 3, p. 135-148
National Category
Other Physics Topics Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:mdh:diva-1406DOI: 10.1002/er.1129ISI: 000235413200001Scopus ID: 2-s2.0-32544461118OAI: oai:DiVA.org:mdh-1406DiVA, id: diva2:54608
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-07Bibliographically approved

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Yan, Jinyue

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