Water Options Window
This window is used to select the water options for the K-value (VLE) method which has been selected in the Thermodynamic System Modification window. This window is unavailable for systems in which a K-value (LLE) method has been selected. Note: These options are only available for selected Generalized and Equation of State methods. See Water Decant Options for the specific methods.
Usage
From the Thermodynamic System - Modification Window, push the Water Options button.
The Decant Water as a Pure Phase box is checked for systems for which water decant is an option. Check this box to select the water decant option for the K-value (VLE) method which is being modified. Uncheck this box to remove the water decant option. See Water Decant Options for more information.
Select an option from Calculation Method for Water Solubility drop box used to determine the water content in the non-aqueous (hydrocarbon) phase. A default method initially is selected. See Water Solubility Methods for more information on the solubility calculations.
Select a Calculation Method for Water Properties for the decanted water by selecting the appropriate radio button. A default value initially is selected. See Water Property Calculations for more details.
To Use User-added Subroutine for Water Enthalpy, place a checkmark in the check box. This requires installation of a user-written subroutine UKHS1 through UKHS15 to perform the enthalpy calculations for the decant water. Refer to chapter 3 of the User-Added Subroutines User Guide for more information.
Select an option from Calculation Method for Water Partial Pressure drop box to determine the water content in sour and sweet gas mixtures. See Water Partial Pressure Calculations for more information on calculation of water partial pressures.
Additional Information
See "Free Water Decant" in Chapter 2, Volume 1 of the PRO/II Reference Manual for more information.
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