Prediction of enthalpy and entropy departures using a two-fluid corresponding-states principle
The generalized corresponding-states principle (GCSP), based on the properties of two nonspherical reference fluids, has been shown to be a powerful technique for the correlation and prediction of thermodynamic properties. In this work the authors show GCSP calculations of enthalpy and entropy departures for pure fluids and fluid mixtures. The mixtures studied include those conforming well to traditional corresponding states theory (e.g., n-pentane + n-octane), as well as those that have not hitherto been amenable to such treatments (e.g., n-pentane + ethanol). It is shown that the GCSP method works well for all classes of mixtures and compares favorably with other methods of prediction. The use of cubic equations of state to represent the reference fluids gives the GCSP method flexibility while maintaining accuracy in the prediction. No adjustable parameters are required in the GCSP calculations of enthalpy and entropy departures.
- Research Organization:
- Georgia Institute of Technology, Atlanta
- OSTI ID:
- 6613873
- Journal Information:
- Int. J. Thermophys.; (United States), Vol. 8:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
THERMODYNAMIC PROPERTIES
CALCULATION METHODS
ACCURACY
BENZENE
CALIBRATION STANDARDS
CARBON DIOXIDE
CYCLOHEXANE
DECALIN
ENTHALPY
ENTROPY
EQUATIONS OF STATE
ETHANE
ETHANOL
FLUIDS
HEXADECANE
METHANE
MIXTURES
NITROGEN
OCTANE
PENTANE
TETRALIN
ALCOHOLS
ALKANES
AROMATICS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CYCLOALKANES
DISPERSIONS
ELEMENTS
EQUATIONS
HYDROCARBONS
HYDROXY COMPOUNDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STANDARDS
400201* - Chemical & Physicochemical Properties