Phase Equilibria Pressure Estimate Dialog
Applicability: Cranium, Synapse (core versions 0315+)

The Phase Equilibria Pressure Estimate Dialog is used to add or edit an individual estimate listed in the Phase Equlibria Pressure Estimates Dialog. The dialog is activated by clicking the left mouse button on a row in the estimates table control or selecting a row and pressing the Edit button.

Dialog Controls

The Phase Equilibrium Datum Dialog enables you to enter values for the tie line and state variables. These state variables are composition and temperature.

1
Property Control: displays the current property being estimated.
2
Tie Line Control: enables you to enter any short text string for the estimate's tie line. Typically, tie lines are entered as TL001, TL002, TL003, etc.
3
Units Controls: enables you to specify the composition units of the current estimate.
4
Component Controls: displays each of the components of the current mixture.
5
Composition Controls: enables you to enter compositions for each component.
6
Temperature Control: enables you to enter the estimate's temperature.
7
Units Control: enables you specify the units in which the temperature was entered.
8
Estimate Control: displays, if available, the estimated pressure.
9
Estimate Units Control: displays the units of the estimated pressure.
10
Technique Control: displays the name of the technique used to generate the current estimate.
11
Comments Control: displays comments generated by the application during the estimation process.
12
X Default Button: activates the Default Compositions Dialog which enables to select a default composition which will be entered into the composition controls. See below for documentation.
13
X Total Button: activates the Residual Composition Dialog which displays the current composition total and enables to assign the residual composition to an unassigned composition control. See below for documentation.
14
Tech Ref Button: retrieves the reference associated with this estimate's technique and opens the reference's associated document.
Entering a Default Composition

A mixture's Default Composition Section may contain one or more compositions that can be accessed by various dialogs used by Cranium and Synapse. The Phase Equilibrium Estimate Dialog is one such dialog.

Pressing the dialog's X Default button activates the default composition dialog.

Selecting a row in the Default Composition table control and pressing the OK button will insert the selected compositions into the Phase Equilibria Estimate dialog's composition controls.

Residual Composition Dialog

Pressing the dialog's X Total button activates the Residual Composition Dialog. This dialog can be used to view the current compsition total and insert a residual composition value into an unassigned composition control.

1
Composition Total Control: displays the total of all entered compositions.
2
Units Control: displays the Phase Equilibria Estimate Dialog's currently selected composition units. Note that these units may be different from the current units being used in the application.
3
Residual Component Control: if there is only one component with an unassigned composition, this control displays that component's name.
4
Residual Concentration Control: if there is only one component with an unassigned composition, this control displays that component's composition that would bring the composition total to a value of 1 or 100, depending upon the current units.
5
Set Residue Button: if there is only one component with an unassigned composition and if there is a valid residual composition, pressing this button assigns the residual composition to the unassigned composition control.
Related Documentation
Topic Description
Getting Started using Synapse provides a quick tour of Synapse's capabilities including examples of chemical product design.
Getting Started using Cranium provides a quick tour of Cranium's capabilities including a discussion of structure editing.
Estimating Chemical Properties a short video demonstrating how to estimate the physical properties of chemicals using either Synapse or Cranium.
Estimating Mixture Properties a short video demonstrating how to estimate the physical properties of mixtures using either Synapse or Cranium.