Počet záznamů: 1  

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

  1. 1.
    0386688 - ÚT 2014 RIV NL eng J - Článek v odborném periodiku
    Jäger, A. - Vinš, Václav - Gernert, J. - Span, R. - Hrubý, Jan
    Phase equilibria with hydrate formation in H2O + CO2 mixtures modeled with reference equations of state.
    Fluid Phase Equilibria. Roč. 338, Januar (2013), s. 100-113. ISSN 0378-3812. E-ISSN 1879-0224
    Grant CEP: GA ČR(CZ) GPP101/11/P046; GA ČR(CZ) GAP101/11/1593
    Institucionální podpora: RVO:61388998
    Klíčová slova: carbon dioxide * gas hydrate * modeling
    Kód oboru RIV: BJ - Termodynamika
    Impakt faktor: 2.241, rok: 2013
    http://www.sciencedirect.com/science/article/pii/S0378381212005158

    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.
    Trvalý link: http://hdl.handle.net/11104/0229044

     
     
Počet záznamů: 1