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Lee-Kesler Generalized Correlations for Gases

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Using a modified version of the Benedict–Webb–Rubin equation of state, Lee and Kesler [1, 2] generated several tables to estimate the following properties at different reduced pressures and temperatures ( and ):

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1. and or the compressibility factor ,

2. and or the residual enthalpy ,

3. and or the residual entropy , and

4. and or the fugacity coefficient .

In the preceding expressions, and are the acentric factor and critical temperature, respectively. These two parameters are set when you select an alkane from the "component" popup menu (from C1 to C10). You can also choose any value for and . This Demonstration displays all of the cited thermodynamic properties.

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Contributed by: Housam Binous and Ahmed Bellagi (December 2016)
Open content licensed under CC BY-NC-SA

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References

[1] J. M. Smith, H. C. Van Ness and M. M. Abbott, Introduction to Chemical Engineering Thermodynamics, 7th ed., Boston: McGraw-Hill, 2005.

[2] B. I. Lee and M. G. Kesler, "A Generalized Thermodynamic Correlation Based on Three-Parameter Corresponding States," AlChE Journal, 21(3), 1975 pp. 510–527. doi:10.1002/aic.690210313.

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