Phase equilibria with hydrate formation in H2O + CO2 mixtures modeled with reference equations of state

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F13%3A00386688" target="_blank" >RIV/61388998:_____/13:00386688 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.fluid.2012.10.017" target="_blank" >http://dx.doi.org/10.1016/j.fluid.2012.10.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fluid.2012.10.017" target="_blank" >10.1016/j.fluid.2012.10.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase equilibria with hydrate formation in H2O + CO2 mixtures modeled with reference equations of state

Popis výsledku v původním jazyce

Formation of gas hydrates is an important feature of the water?carbon dioxide system. An accurate description of thermodynamic properties of this system requires a consistent description of both fluid and solid states and of their respective phase equilibria. In this study, we modified and refitted the gas hydrate model by A.L. Ballard and E.D. Sloan to combine it with highly accurate equations of state (EoS) in form of the Helmholtz energy and Gibbs energy for other phases formed in the water?carbon dioxide system, e.g., IAPWS-95 and IAPWS formulation for water ice Ih. Since the gas hydrate model uses the fugacity of the gas component in the coexisting phase as an input variable, the accuracy of the predicted phase equilibria was significantly improved by using highly accurate EoSs for coexisting phases. The new hydrate model can be used in a temperature range of 150?295 K and at pressures up to 500 MPa.

Název v anglickém jazyce

Phase equilibria with hydrate formation in H2O + CO2 mixtures modeled with reference equations of state

Popis výsledku anglicky

Formation of gas hydrates is an important feature of the water?carbon dioxide system. An accurate description of thermodynamic properties of this system requires a consistent description of both fluid and solid states and of their respective phase equilibria. In this study, we modified and refitted the gas hydrate model by A.L. Ballard and E.D. Sloan to combine it with highly accurate equations of state (EoS) in form of the Helmholtz energy and Gibbs energy for other phases formed in the water?carbon dioxide system, e.g., IAPWS-95 and IAPWS formulation for water ice Ih. Since the gas hydrate model uses the fugacity of the gas component in the coexisting phase as an input variable, the accuracy of the predicted phase equilibria was significantly improved by using highly accurate EoSs for coexisting phases. The new hydrate model can be used in a temperature range of 150?295 K and at pressures up to 500 MPa.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fluid Phase Equilibria

ISSN

0378-3812

e-ISSN

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Svazek periodika

338

Číslo periodika v rámci svazku

Januar

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

100-113

Kód UT WoS článku

000314737000012

EID výsledku v databázi Scopus

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