A CRITICAL EVALUATION OF THREE EQUATIONS OF STATE FOR DENSE GASES AGAINST OBSERVED DATA |
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| Authors: | M. A. R. Sharif T. K. Groves |
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| Affiliation: | a Department of Engineering Mechanics, The University of Alabama, Tuscaloosa, Alabamab Department of Mechanical Engineering, The University of Calgary, Calgary, Alberta, Canada |
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| Abstract: | The van der Waals, the Benedict-Webb-Rubin, and a virial equation of state predictions for dense gases are evaluated against observed “integral” properties (p, ρ, T) and “slope” properties like the speed of sound [(∂p/∂p)1/23], isothermal compressibility coefficient [(∂ In ρ /∂p)T], and few other thermodynamic properties directly derived from the observed data. The documented procedure thus constitutes a stringent test methodology to evaluate the applicability of these equations of state to dense gases which may also be followed for appraising any other equation of state. The graphical comparisons between the predictions and the observed data are presented and discussed critically |
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| Keywords: | Equations of state Thermodynamic properties Speed of sound Compressibility factor Isothermal compressibility coefficient |
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