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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/29099

    Título
    Accurate experimental (p, ρ, T) data and virial coefficients for the (methane and helium) binary system
    Autor
    Hernández Gómez, Roberto
    Tuma, Dirk
    Villamañán Olfos, Rosa MaríaAutoridad UVA
    Chamorro Camazón, César RubénAutoridad UVA Orcid
    Año del Documento
    2016
    Editorial
    Elsevier ltd.
    Documento Fuente
    J. Chem. Thermodynamics 101 (2016) 168–179
    Resumo
    The quality and the availability of experimental data limit the achievable accuracy of multiparameter equations of state, such as the GERG-2008. Referring to the fundamentals of this wide-range equation of state, no suitable data were available for many mixtures containing helium. This work provides accurate experimental (p, ρ, T) data for three binary mixtures of methane with helium: (0.95 (amount-of-substance fraction) CH4 + 0.05 He) and (0.90 CH4 + 0.10 He) at temperatures of (240, 250 and 260) K, and (0.50 CH4 + 0.50 He) from (240 to 400) K. This work is a continuation of a previous one which reported accurate experimental (p, ρ, T) data for the (0.95 CH4 + 0.05 He) and the (0.90 CH4 + 0.10 He) binary mixtures in the temperature range from the (250 to 400) K. All density measurements were performed by using a single-sinker densimeter with magnetic suspension coupling at pressures up to 20 MPa. Experimental data were compared with the corresponding densities calculated from the GERG-2008 and the AGA8-DC92 equations of state. Deviations from the GERG-2008 are much larger than from the AGA8-DC92 (up to –6.5 %). These deviations increased with decreasing temperature, with increasing pressure, and with increasing helium fraction. In contrast, deviations from the AGA8-DC92 are within the 0.5 % band. The experimental values were also used to calculate the second interaction virial coefficient for this mixture.
    Materias (normalizadas)
    Termodinámica
    Palabras Clave
    Methane
    Helium
    Natural gas
    Density
    Single-sinker densimeter
    GERG-2008 equation of state
    ISSN
    0021-9614
    Revisión por pares
    SI
    DOI
    10.1016/j.jct.2016.05.024
    Patrocinador
    MEC ENE2013-47812-R
    European Commission ENG54
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/29099
    Derechos
    openAccess
    Aparece en las colecciones
    • BioEcoUVa - Artículos de revista [196]
    • DEP46 - Artículos de revista [103]
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    jct 101 168 2016_repository.pdf
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    Universidad de Valladolid

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