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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.
Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling. Royal Institute of Technology, Sweden. (PRO)ORCID-id: 0000-0003-0300-0762
2006 (engelsk)Inngår i: International journal of energy research (Print), ISSN 0363-907X, E-ISSN 1099-114X, Vol. 30, nr 3, s. 135-148Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
John Wiley & Sons, Ltd. , 2006. Vol. 30, nr 3, s. 135-148
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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
Tilgjengelig fra: 2008-10-17 Laget: 2008-10-17 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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