RT info:eu-repo/semantics/article
T1 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
A1 Lozano Martín, Daniel
A1 Vega Maza, David
A1 Moreau Ortega, Alejandro
A1 Martín González, María del Carmen
A1 Tuma, Dirk
A1 Segovia Puras, José Juan
K1 Speed of sound
K1 Sonido, Velocidad del
K1 Acoustic resonance
K1 Resonancia acústica
K1 Hydrogen
K1 Hidrógeno
K1 Natural gas
K1 Gas natural
AB 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.
PB Elsevier
SN 0021-9614
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/49619
UL https://uvadoc.uva.es/handle/10324/49619
LA eng
NO The Journal of Chemical Thermodynamics, 2021, vol. 158, 106434
NO Producción Científica
DS UVaDOC
RD 17-jul-2024