Virial equation of state for natural gas systems

J. F. Estela-Uribe; J. Jaramillo; M. A. Salazar; J. P.M. Trusler

doi:10.1016/S0378-3812(02)00264-9

Virial equation of state for natural gas systems

J. F. Estela-Uribe, J. Jaramillo, M. A. Salazar, J. P.M. Trusler

Producción: Contribución a una revista › Artículo › revisión exhaustiva

14 Citas (Scopus)

Resumen

We present a new virial equation of state for natural gas systems under 'custody transfer conditions', defined at 270≤T(K)≤330 and P≤12MPa. This model predicts compression factors of natural gases with at least the same accuracy as the well-known GERG virial equation of state. However, the model is devised in such a way that the prediction of caloric properties, particularly the speed of sound, is significantly improved with respect to the GERG virial equation. This was achieved by representing the second and third virial coefficients as quadratic functions of inverse temperature. When the new model was compared with a large database of experimental results, the overall absolute average deviation in compression factors was 0.034% while that in speeds of sound was 0.17%.

Idioma original	Inglés
Páginas (desde-hasta)	169-182
Número de páginas	14
Publicación	Fluid Phase Equilibria
Volumen	204
N.º	2
DOI	https://doi.org/10.1016/S0378-3812(02)00264-9
Estado	Publicada - 15 feb. 2003

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abstract = "We present a new virial equation of state for natural gas systems under 'custody transfer conditions', defined at 270≤T(K)≤330 and P≤12MPa. This model predicts compression factors of natural gases with at least the same accuracy as the well-known GERG virial equation of state. However, the model is devised in such a way that the prediction of caloric properties, particularly the speed of sound, is significantly improved with respect to the GERG virial equation. This was achieved by representing the second and third virial coefficients as quadratic functions of inverse temperature. When the new model was compared with a large database of experimental results, the overall absolute average deviation in compression factors was 0.034% while that in speeds of sound was 0.17%.",

keywords = "Compression factor, Density, Equation of state, Speed of sound, Virial coefficients",

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AU - Estela-Uribe, J. F.

AU - Jaramillo, J.

AU - Salazar, M. A.

AU - Trusler, J. P.M.

PY - 2003/2/15

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N2 - We present a new virial equation of state for natural gas systems under 'custody transfer conditions', defined at 270≤T(K)≤330 and P≤12MPa. This model predicts compression factors of natural gases with at least the same accuracy as the well-known GERG virial equation of state. However, the model is devised in such a way that the prediction of caloric properties, particularly the speed of sound, is significantly improved with respect to the GERG virial equation. This was achieved by representing the second and third virial coefficients as quadratic functions of inverse temperature. When the new model was compared with a large database of experimental results, the overall absolute average deviation in compression factors was 0.034% while that in speeds of sound was 0.17%.

AB - We present a new virial equation of state for natural gas systems under 'custody transfer conditions', defined at 270≤T(K)≤330 and P≤12MPa. This model predicts compression factors of natural gases with at least the same accuracy as the well-known GERG virial equation of state. However, the model is devised in such a way that the prediction of caloric properties, particularly the speed of sound, is significantly improved with respect to the GERG virial equation. This was achieved by representing the second and third virial coefficients as quadratic functions of inverse temperature. When the new model was compared with a large database of experimental results, the overall absolute average deviation in compression factors was 0.034% while that in speeds of sound was 0.17%.

KW - Compression factor

KW - Density

KW - Equation of state

KW - Speed of sound

KW - Virial coefficients

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JO - Fluid Phase Equilibria

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Virial equation of state for natural gas systems

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