Thermodynamic Property Calculation Categories
For user convenience, the various thermodynamic systems have been grouped into logical categories. Thus, a category may be selected and the desired system quickly located within the category Primary Method list. Primary Method names correspond to the Equilibrium K-Value method for the system.
Usage
From the Main Window menu bar, select the Input menu and then Thermodynamic Data. Alternatively, click the "Input Thermo" button from the Toolbar.
In the Thermodynamic Data Window that displays, select (highlight) the desired category in the Category list box. Categories are:
Most Commonly Used
These systems apply to many simulations, particularly those with hydrocarbons. See Most Commonly Used Calculation Methods for further details.
All Primary Methods
This selection provides a list of all systems regardless of category.
Equations of State
Equations of state provide the most rigorous means for computation of thermodynamic properties. Several equations of state and their modified forms are provided. See Equations of State for more information.
Liquid Activity Methods
These methods use liquid activity coefficients to model the liquid phase behavior. The fugacity coefficient is computed with the reference state for each component in liquid phase taken as the pure liquid at the temperature and pressure of the mixture. See Liquid Activity Methods for more information.
Generalized Correlations
Generalized correlations are semi-rigorous methods with empirical expressions which have been derived from experimental data. See Generalized Correlations for additional information on this category.
Special Packages
Application-specific packages of thermodynamic methods. See Special Packages for more details.
Electrolyte
Special thermodynamic systems for aqueous electrolyte systems. See Electrolyte Models for more details.
Polymers
Special thermodynamic systems for systems involving polymer components. See Polymer Methods for more information.
User-added Methods
These methods utilize User-written FORTRAN subroutines for the prediction of K-values, enthalpies, entropies and densities. See User-added Methods for more information.
PRO/II REFPROP Interface
PRO/II 9.1 provides REFPROP as a Thermodynamic property calculation system. See REPROP Interface for more information.
Related Reference Manual Topics