Phase Equilibria Calculation of CO2-H2O System at Given Volume, Temperature, and Moles in CO2 Sequestration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00235772" target="_blank" >RIV/68407700:21340/15:00235772 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Phase Equilibria Calculation of CO2-H2O System at Given Volume, Temperature, and Moles in CO2 Sequestration

Popis výsledku v původním jazyce

Abstract?The paper deals with the investigation of multiphase equilibrium of CO2-H2O system at constant volume, temperature and moles (the so-called V T-flash), which is motivated by topical problem of CO2 sequestration. Studying CO2-H2O mixture under natural geological conditions (pressures typically below 50 MPa and temperatures typically 298 ? 383 K) for different system composition, two-phase and three-phase states were observed. Recently, we have developed a fast and robust algorithm for constant-volume two-phase split calculation, which is based on the direct minimization of the total Helmholtz free energy of the mixture with respect to the mole- and volume-balance constraints. The algorithm uses modified Newton-Raphson minimization method. To initialize the algorithm, an initial guess is constructed using the results of constant-volume stability testing. In this work, we extend the results for CO2-H2O system and propose a fast and robust algorithm for three-phase equilibrium com

Název v anglickém jazyce

Phase Equilibria Calculation of CO2-H2O System at Given Volume, Temperature, and Moles in CO2 Sequestration

Popis výsledku anglicky

Abstract?The paper deals with the investigation of multiphase equilibrium of CO2-H2O system at constant volume, temperature and moles (the so-called V T-flash), which is motivated by topical problem of CO2 sequestration. Studying CO2-H2O mixture under natural geological conditions (pressures typically below 50 MPa and temperatures typically 298 ? 383 K) for different system composition, two-phase and three-phase states were observed. Recently, we have developed a fast and robust algorithm for constant-volume two-phase split calculation, which is based on the direct minimization of the total Helmholtz free energy of the mixture with respect to the mole- and volume-balance constraints. The algorithm uses modified Newton-Raphson minimization method. To initialize the algorithm, an initial guess is constructed using the results of constant-volume stability testing. In this work, we extend the results for CO2-H2O system and propose a fast and robust algorithm for three-phase equilibrium com

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

IAENG International Journal of Applied Mathematics

ISSN

1992-9978

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

10

Strana od-do

183-192

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-84938906705