Introduction
The Sigmafine Thermodynamic Calculations Package is a software tool used to handle multicomponent mixtures and to calculate vapor liquid equilibrium as well as various thermodynamic properties using equations of state.
This extension supports:
- Peng-Robinson (PR)
- Soave-Redlich-Kwong (SRK)
PR and SRK are Equations of State methods, widely used in the process industry, to estimate or predict both liquid and vapor phase properties. These methods work at best with hydrocarbon mixtures although they can be used with other chemical species. To improve prediction properties of the liquid phase, some literature data correlations are used in place of the value calculated by the equation of state such as for the density of the liquid phase. Highly non-ideal mixtures might not be accurately represented with the included equations of state therefore, you should critically assess the results.
The results of thermodynamic calculations can actively support Sigmafine Balance Analysis rules such as Mass or Energy. This package assumes the reference state to be an ideal gas at normal conditions.
Normal Conditions
Temperature – 20°C (293.15 K, 68 F)
Pressure - 1 ata (101.325 kPa, 14.7 psia, 760 torr)
| Type | Availability |
|---|---|
| Liquid Phase | Supported |
| Vapor Phase | Supported |
| Vapor-Liquid-Liquid | Not Supported |
| Vapor-Liquid-Solid | Not Supported |