### Abstract

Original language | English |
---|---|

Article number | 105869 |

Number of pages | 14 |

Journal | The Journal of Chemical Thermodynamics |

Volume | 139 |

Early online date | 19 Jul 2019 |

DOIs | |

Publication status | Published - Dec 2019 |

### Fingerprint

### Keywords

- speed of sound
- acoustic resonance
- methane
- helium
- heat capacities as perfect gas
- virial coefficients
- Methane
- Virial coefficients
- VIRIAL-COEFFICIENTS
- PRESSURES
- Helium
- ARGON
- Acoustic resonance
- ACOUSTIC THERMOMETRY
- MIXTURES
- GAS-CONSTANT R
- EQUATION-OF-STATE
- METHANE
- Speed of sound
- TEMPERATURES
- Heat capacities as perfect gas
- HELIUM

### Cite this

_{4}+ He) mixtures from

*p*= (0.5 to 20) MPa at

*T*= (273.16 to 375) K.

*The Journal of Chemical Thermodynamics*,

*139*, [105869]. https://doi.org/10.1016/j.jct.2019.07.011

**Speeds of sound for (CH _{4} + He) mixtures from p = (0.5 to 20) MPa at T = (273.16 to 375) K.** / Lozano-Martín, Daniel; Rojo, Andres; Martin, M. Carmen; Vega-Maza, David; Segovia, José Juan (Corresponding Author).

Research output: Contribution to journal › Article

_{4}+ He) mixtures from

*p*= (0.5 to 20) MPa at

*T*= (273.16 to 375) K',

*The Journal of Chemical Thermodynamics*, vol. 139, 105869. https://doi.org/10.1016/j.jct.2019.07.011

_{4}+ He) mixtures from

*p*= (0.5 to 20) MPa at

*T*= (273.16 to 375) K. The Journal of Chemical Thermodynamics. 2019 Dec;139. 105869. https://doi.org/10.1016/j.jct.2019.07.011

}

TY - JOUR

T1 - Speeds of sound for (CH4 + He) mixtures from p = (0.5 to 20) MPa at T = (273.16 to 375) K

AU - Lozano-Martín, Daniel

AU - Rojo, Andres

AU - Martin, M. Carmen

AU - Vega-Maza, David

AU - Segovia, José Juan

N1 - Acknowledgements The authors want to thank for the support to Ministerio de Economía, Industria y Competitividad project ENE2017-88474-R and Junta de Castilla y León project VA280P18.

PY - 2019/12

Y1 - 2019/12

N2 - 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.

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.

KW - speed of sound

KW - acoustic resonance

KW - methane

KW - helium

KW - heat capacities as perfect gas

KW - virial coefficients

KW - Methane

KW - Virial coefficients

KW - VIRIAL-COEFFICIENTS

KW - PRESSURES

KW - Helium

KW - ARGON

KW - Acoustic resonance

KW - ACOUSTIC THERMOMETRY

KW - MIXTURES

KW - GAS-CONSTANT R

KW - EQUATION-OF-STATE

KW - METHANE

KW - Speed of sound

KW - TEMPERATURES

KW - Heat capacities as perfect gas

KW - HELIUM

UR - http://www.mendeley.com/research/speeds-sound-ch4he-mixtures-p05-20mpa-t27316-375k

U2 - 10.1016/j.jct.2019.07.011

DO - 10.1016/j.jct.2019.07.011

M3 - Article

VL - 139

JO - The Journal of Chemical Thermodynamics

JF - The Journal of Chemical Thermodynamics

SN - 0021-9614

M1 - 105869

ER -