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

Universidad Javeriana
Imperial College London

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

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%.

Original language	English
Pages (from-to)	169-182
Number of pages	14
Journal	Fluid Phase Equilibria
Volume	204
Issue number	2
DOIs	https://doi.org/10.1016/S0378-3812(02)00264-9
State	Published - 15 Feb 2003

Keywords

Compression factor
Density
Equation of state
Speed of sound
Virial coefficients

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10.1016/S0378-3812(02)00264-9

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title = "Virial equation of state for natural gas systems",

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\%.",

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T1 - Virial equation of state for natural gas systems

AU - Estela-Uribe, J. F.

AU - Jaramillo, J.

AU - Salazar, M. A.

AU - Trusler, J. P.M.

PY - 2003/2/15

Y1 - 2003/2/15

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

UR - https://www.scopus.com/pages/publications/0037440532

U2 - 10.1016/S0378-3812(02)00264-9

DO - 10.1016/S0378-3812(02)00264-9

M3 - Article

AN - SCOPUS:0037440532

SN - 0378-3812

VL - 204

SP - 169

EP - 182

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

IS - 2

ER -

Virial equation of state for natural gas systems

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Keywords

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