Počet záznamů: 1
Temperature and pressure correlation for volume of gas hydrates with crystal structures sI and sII
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SYSNO ASEP 0474769 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Temperature and pressure correlation for volume of gas hydrates with crystal structures sI and sII Tvůrce(i) Vinš, Václav (UT-L) RID, ORCID
Jäger, A. (DE)
Hielscher, S. (DE)
Span, R. (DE)
Hrubý, Jan (UT-L) RID, ORCID
Breitkopf, C. (DE)Celkový počet autorů 6 Číslo článku 02141 Zdroj.dok. EPJ Web of Conferences, EXPERIMENTAL FLUID MECHANICS 2016 (EFM16 ), 143. - CEDEX : E D P SCIENCES, 2017 - ISSN 2100-014X Poč.str. 8 s. Forma vydání Online - E Akce Experimental Fluid Mechanics 2016 Datum konání 15.11.2016 - 18.11.2016 Místo konání Mariánské Lázně Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova gas hydrates ; modeling ; volume corelation Vědní obor RIV BJ - Termodynamika Obor OECD Thermodynamics CEP GJ15-07129Y GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 UT WOS 000407743800143 EID SCOPUS 85020111440 DOI 10.1051/epjconf/201714302141 Anotace The temperature and pressure correlations for the volume of gas hydrates forming crystal structures sI and sII developed in previous study [Fluid Phase Equilib. 427 (2016) 268-281], focused on the modeling of pure gas hydrates relevant in CCS (carbon capture and storage), were revised and modified for the modeling of mixed hydrates in this study. A universal reference state at temperature of 273.15 K and pressure of 1 Pa is used in the new correlation. Coefficients for the thermal expansion together with the reference lattice parameter were simultaneously correlated to both the temperature data and the pressure data for the lattice parameter. A two-stage Levenberg Marquardt algorithm was employed for the parameter optimization. The pressure dependence described in terms of the bulk modulus remained unchanged compared to the original study. A constant value for the bulk modulus B0 = 10 GPa was employed for all selected hydrate formers. The new correlation is in good agreement with the experimental data over wide temperature and pressure ranges from 0 K to 293 K and from 0 to 2000 MPa, respectively. Compared to the original correlation used for the modeling of pure gas hydrates the new correlation provides significantly better agreement with the experimental data for sI hydrates. The results of the new correlation are comparable to the results of the old correlation in case of sII hydrates. In addition, the new correlation is suitable for modeling of mixed hydrates. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2018 Elektronická adresa https://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02141/epjconf_efm2017_02141.html
Počet záznamů: 1