The Phase Equilibria Section uses the Phase Equilibria Temperature Estimates Dialog to view estimates and edit state variable values. The dialog is activated by clicking the left mouse button on the section's temperature estimates table control or by selecting the Edit Variables & Detail Estimates command from the section's temperature estimates table control commands menu. (See Estimates Commands Menu documentation for details.)
The Estimates dialog provides controls for displaying estimates, source information, editing state variable values, sorting estimates, and regressing values.
|Table Control: displays the current list of phase equilibria estimates. Each row contains tie line, state variables, and (possibly) an estimated value. Clicking the left mouse button on a table row selects that table row. Clicking and holding the left mouse button down and then dragging the mouse will select several table rows. Double-clicking the left mouse button on a row selects the row and edits the contents of that row.
|Technique Control: displays the name of the estimation technique which generated the currently selected estimate.
|Comments Control: displays the comments associated with the currently selected estimate.
|Edit Button: activate the Phase Equilibrium Estimate dialog enabling you to enter the estimate's state varaibles. See the Phase Equlibria Estimate Dailog documentation for details.
|Commands Button: pressing the dialog's Commands button or clicking the right mouse button on the table control displays the commands menu. This menu provides standard commands for copying, pasting, and clearing state variables and estimates. See the documentation on Common Menu Commands for details.
|Series Button: displays a menu allowing you to choose to generate a pressure, or composition series. See below for documentation.
|Sort Button: the dialog's Sort button will be enabled if two or more rows are selected. Pressing the Sort button activates the Sort Attribute dialog. This dialog enables you to sort estimates in ascending or descending order by the selected attribute.
|Goal Seek Button: activates the Phase Equilibrium Goal Seek dialog. This dialog enables you to find state variable values that give a certain estimated value. See below for documentation.
|Regress Button: activates the Values Regression Dialog enabling you to fit a variety of equations to the current estimates. See the Regress Values Dialog documentation for details.
|Add Rows Button: pressing the Add Rows button will add rows to the bottom of the table control.
Clicking the right mouse button within the table control or pressing the dialog's Commands button displays the estimates commands menu.
The menu's commands enable you to copy, cut and paste values to and from the table control. See Common Menu Commands for documentation on the commands commonly found on command menus.
Clicking the left mouse button on a row in the table control or selecting a row and pressing the Edit button, activates the Phase Equilibrium Temperature Estimate Dialog. The dialog enables you to enter values for the tie line, compositions, and pressure. Click here for documentation.
It is very common to desire estimates over a range of pressures or compositions. Pressing the dialog's Series button displays a menu will commands for, depending upon the property being estimated, activating the:
The Composition Series Dialog enables you to generate a series of state variables consisting of a fixed pressure and compositions varying between specified limits. See the Phase Equilibria Composition Series Dialog documentation for details.
The Pressure Series Dialog enables you to generate a series of state variables consisting of fixed compositions and pressurve values varying between specified limits. See the Phase Equilibria Pressure Series Dialog documentation for details.
Typically you first enter state variable values and then request the application to generate an estimated property value. Sometimes, the opposite process is desired - you specify a desired property value and ask the application to estimate the state variable values that would generate that estimate. The Temperature Goal Seek Dialog provides tools that enable you to make such estimations. See here for documentation.
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