Extended corresponding states equation of state for natural gas systems

We present an extended corresponded states model for the prediction of thermodynamic properties of natural gas systems. This model is based on shape factors expressed as generalised functions of the reduced temperature and density, the acentric factor and the critical compression factor. A single set of coefficients was optimised for 12 major components of natural gases. The extension to multicomponent systems was carried out according to the one-fluid model with temperature- and density-dependent binary interaction parameters. Compression factors and speeds of sound of natural gases were predicted with average deviations within ±0.036%.

[1]  B. Younglove,et al.  SPEED OF SOUND DATA AND RELATED MODELS FOR MIXTURES OF NATURAL GAS CONSTITUENTS. , 1993 .

[2]  J. Trusler.  The speed of sound in (0.8CH4 + 0.2C2H6)(g) at temperatures between 200 K and 375 K and amount-of-substance densities up to 5 mol·dm-3 , 1994 .

[3]  J. Trusler,et al.  Shape factors for the light hydrocarbons , 1998 .

[4]  H. Lentz,et al.  p, V, T for benzene in the range 5 to 300 MPa and 323 to 683 K , 1977 .

[5]  P. Schley,et al.  Ideal-gas thermodynamic properties for natural-gas applications , 1995 .

[6]  I. D. Watson,et al.  The prediction of the thermodynamic properties of fluids and fluid mixtures-I The principle of corresponding states and its extensions , 1969 .

[7]  W. Stockmayer,et al.  The Compressibility of and an Equation of State for Gaseous Normal Pentane , 1937 .

[8]  Steven Beyerlein,et al.  An extended corresponding-states model for predicting thermodynamic properties of N2-Ar-O2 mixtures including vapor-liquid equilibrium , 1994 .

[9]  Wolfgang Wagner,et al.  A New Equation of State and Tables of Thermodynamic Properties for Methane Covering the Range from the Melting Line to 625 K at Pressures up to 100 MPa , 1991 .

[10]  J. D. Boer,et al.  Isotherms of nitrogen between 200 and 3000 atm. and 0° and 150° , 1936 .

[11]  M. L. Huber,et al.  A Predictive Extended Corresponding States Model for Pure and Mixed Refrigerants , 1990 .

[12]  D. R. Douslin,et al.  Pressure, volume, temperature relations of ethane , 1973 .

[13]  W. M. Haynes,et al.  Thermophysical properties of normal butane from 135 to 700 K at pressures to 70 MPa , 1982 .

[14]  J. Ely,et al.  Thermophysical Properties of Fluids. II. Methane, Ethane, Propane, Isobutane, and Normal Butane , 1987 .

[15]  W. Wakeham,et al.  Automated isochoric apparatus for the measurement of density of fluid mixtures at temperatures from 298.15 K to 773.15 K and pressures up to 40 MPa: results for helium and for nitrogen , 1993 .

[16]  W. Wagner,et al.  Measurement and correlation of the (pressure, density, temperature) relation of carbon dioxide I. The homogeneous gas and liquid regions in the temperature range from 217 K to 340 K at pressures up to 9 MPa , 1990 .

[17]  J. Estela-Uribe.  Equation of state for natural gas systems , 1999 .

[18]  J. Trusler,et al.  Regular articleThe speed of sound and derived thermodynamic properties of ethane at temperatures between 220 K and 450 K and pressures up to 10.5 MPa , 1997 .

[19]  R. D. Goodwin,et al.  Carbon monoxide compressibility data from 100 to 300 K; derived virial coefficients, orthobaric densities, and heats of vaporization , 1983 .

[20]  J. W. Leach,et al.  Use of molecular shape factors in vapor‐liquid equilibrium calculations with the corresponding states principle , 1968 .

[21]  W. M. Haynes,et al.  Thermophysical properties of isobutane from 114 to 700 K at pressures to 70 MPa , 1982 .

[22]  A. Humphreys.  Accurate prediction of compressibility factors by the GERG virial equation , 1991 .

[23]  W. Wagner,et al.  Supplementary measurements of the (pressure, density, temperature) relation of carbon dioxide in the homogeneous region at temperatures from 220 K to 360 K and pressures up to 13 MPa , 1992 .

[24]  R. H. Harrison,et al.  Pressure-volume-temperature relations of propane , 1982 .