RT info:eu-repo/semantics/article
T1 Speeds of sound for a biogas mixture CH4+N2+CO2+CO from p = (1 to 12) MPa at T = (273, 300 and 325) K measured with a spherical resonator
A1 Lozano Martín, Daniel
A1 Segovia Puras, José Juan
A1 Martín González, María del Carmen
A1 Fernández Vicente, Teresa
A1 Campo Maldonado, Dolores del
K1 Speed of sound
K1 Acoustic resonance
K1 Spherical resonator
K1 Biogas
AB The present work aims to measure speeds of sound c in a biogas mixture of CH4+N2+CO2+CO, at p = (1 to 12) MPa and T = (273, 300 and 325) K, using a spherical acoustical resonator. The results are fitted to the virial acoustic equation of state, and the virial acoustic coefficients are obtained, β_a and γ_a and extrapolated to zero pressure, determining the adiabatic coefficient as perfect gas, γ^pg, and the isobaric and isochoric heat capacities as perfect gas, C_p^pg and C_V^pg, respectively. The speeds of sound are acquired with a mean expanded relative uncertainty of 165 parts in 106 (k = 2) and are compared with the results predicted by the reference equation of state for this kind of mixture (natural gas-like mixtures), EoS GERG-2008. Relative deviations between experimental data and values estimated by this model were less than 700 parts in 106 at T = 325 K, and below 400 parts in 106, and within measurement uncertainty of at T = 300 K, although appreciably higher at isotherm T = 273 K at the highest pressure data for this work, and even reaching values above 3.400 parts in 106.
PB Elsevier
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/29086
UL http://uvadoc.uva.es/handle/10324/29086
LA eng
NO Journal of Chemical Thermodynamics, , November 2016,Volume 102, Pages 348-356
DS UVaDOC
RD 14-oct-2024