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Título
Speed of sound data, derived perfect-gas heat capacities, and acoustic virial coefficients of a calibration standard natural gas mixture and a low-calorific H2-enriched mixture
Autor
Año del Documento
2021
Editorial
Elsevier
Descripción
Producción Científica
Documento Fuente
The Journal of Chemical Thermodynamics, 2021, vol. 158, 106434
Resumo
This work aims to address the technical aspects related to the thermodynamic characterization of natural gas mixtures blended with hydrogen for the introduction of alternative energy sources within the Power-to-Gas framework. For that purpose, new experimental speed of sound data are presented in the pressure range between (0.1 up to 13) MPa and at temperatures of (260, 273.16, 300, 325, and 350) K for two mixtures qualified as primary calibration standards: a 11 component synthetic natural gas mixture (11 M), and another low-calorific H2-enriched natural gas mixture with a nominal molar percentage . Measurements have been gathered using a spherical acoustic resonator with an experimental expanded (k = 2) uncertainty better than 200 parts in 106 (0.02%) in the speed of sound. The heat capacity ratio as perfect-gas γpg, the molar heat capacity as perfect-gas Cp,mpg, and the second βa and third γa acoustic virial coefficients are derived from the speed of sound values. All the results are compared with the reference mixture models for natural gas-like mixtures, the AGA8-DC92 EoS and the GERG-2008 EoS, with special attention to the impact of hydrogen on those properties. Data are found to be mostly consistent within the model uncertainty in the 11 M synthetic mixture as expected, but for the hydrogen-enriched mixture in the limit of the model uncertainty at the highest measuring pressures.
Palabras Clave
Speed of sound
Sonido, Velocidad del
Acoustic resonance
Resonancia acústica
Hydrogen
Hidrógeno
Natural gas
Gas natural
ISSN
0021-9614
Revisión por pares
SI
Patrocinador
Fondo Europeo de Desarrollo Regional - Ministerio de Ciencia, Innovación y Universidades (project ENE2017-88474-R)
Fondo Europeo de Desarrollo Regional - Junta de Castilla y León (project VA280P18)
Ministerio de Ciencia, Innovación y Universidades (fellowship BEAGAL18/00259)
Fondo Europeo de Desarrollo Regional - Junta de Castilla y León (project VA280P18)
Ministerio de Ciencia, Innovación y Universidades (fellowship BEAGAL18/00259)
Propietario de los Derechos
© 2021 Elsevier
Idioma
eng
Tipo de versión
info:eu-repo/semantics/acceptedVersion
Derechos
openAccess
Aparece en las colecciones
Arquivos deste item
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