RT info:eu-repo/semantics/article
T1 Speeds of sound for (CH4 + He) mixtures from p = (0.5 to 20) MPa at T = (273.16 to 375) K
A1 Lozano Martín, Daniel
A1 Rojo, Andres
A1 Martín González, María del Carmen
A1 Vega Maza, David
A1 Segovia Puras, José Juan
K1 Termodinámica
K1 Speed of sound
K1 Acoustic resonance
K1 Methane
K1 Helium
K1 Heat capacities as perfect gas
K1 Vrial coefficients
K1 2210.32 Termodinámica
AB This work aims to provide accurate and wide-ranging experimental new speed of sound data w(p,T) of two binary (CH4 + He) mixtures at a nominal helium content of 5 % and 10 % at pressures p = (0.5 up to 20) MPa and temperatures T = (273.16, 300, 325, 350 and 375) K. For this purpose, the most accurate technique for determining speed of sound in gas phase has been used: the spherical acoustic resonator. Speed of sound is determined with an overall relative expanded (k = 2) uncertainty of 230 parts in 106 and compared to reference models for multicomponent natural gas-like mixtures: AGA8-DC92 and GERG-2008 equations of state. Relative deviations of experimental data from model estimations are outside the experimental uncertainty limit, although all points are mostly within the AGA uncertainty of 0.2 % and GERG uncertainty of 0.5 % and worsen as the helium content increases. Absolute average deviations are better than 0.45 % for GERG and below 0.14 % for AGA models in (0.95 CH4 + 0.05 He) mixture and below 0.83 % for GERG and within 0.22 % for AGA equations in (0.90 CH4 + 0.10 He) mixture.
PB Elsevier
SN 0021-9614
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/39001
UL http://uvadoc.uva.es/handle/10324/39001
LA eng
NO Journal of Chemical Thermodynamics 2019,139,105869
NO Producción Científica
DS UVaDOC
RD 27-abr-2024