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Use of velocity of sound in predicting thermodynamic properties of dense fluids from cubic equations of state
Author(s) -
Shabani Mohammad R.,
Riazi Mohammad R.,
Shaban Habib I.
Publication year - 1998
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450760217
Subject(s) - thermodynamics , cubic function , equation of state , speed of sound , compressibility , methane , binary number , compressibility factor , vapor pressure , materials science , chemistry , physics , mathematics , organic chemistry , mathematical analysis , arithmetic
In this paper it has been shown that velocity of sound data may be used to obtain constants of a cubic equation of state and then thermodynamic properties can be accurately calculated through the constants extracted from sonic velocity data. Results are presented for estimation of heat capacities, enthalpies, vapor pressures and compressibility factors of some pure vapor and liquid compounds as well as some binary mixtures for pressures up to 100 MPa and temperatures up to 600 K for hydrocarbons from methane to hexadecane. The method will be useful for those mixtures containing heavy compounds for which accurate data on critical constants are not available, but for which the sonic velocity can be measured.