Enthalpy calculations for liquid activity methods

The liquid activity (LACT) methods in AVEVA Process Simulation all use the same calculation routes and equations to calculate the liquid and vapor enthalpy for pure components. The equations of state use a different method and the descriptions in the following topics do not apply to the equations of state.

In the Fluid Editor for the LACT methods, in the Property Options area, in the Enthalpy/Entropy Route list, you can select which type of enthalpy route that you want to use for your Fluid, System or Custom.