button on the Toolbar.Component Properties Main Window
This window is the master navigation point for changing properties of all components entered on the Component Selection Main Window or for supplying properties for User-Defined components.
Usage
Select either the Component Properties command from the Input menu in the Main Window, or push the button on the Toolbar.
In order to facilitate finding the required properties, they are divided into a number of different categories.
Thermophysical Properties
Fixed Properties
These are the properties which do not change with temperature such as molecular weight, standard density, boiling point, critical properties, molecular constants, heats of formation and a number of miscellaneous properties. Properties of library and petroleum components may be modified in the Fixed Properties Window.
Temperature Dependent Properties
For library components, the temperature dependent properties are specified as coefficients to one of a number of correlations. The properties which may be modified in the Temperature Dependent Properties Window are vapor pressure, enthalpy, heat capacity, latent heat, density, viscosity, conductivity and surface tension.
Fill from Structure
Pushing the Fill from Structure button opens the Component Properties - Fill from Structure Window which enables the user to select components which are to have missing properties determined from the structure of the molecule.
Refinery Inspection Properties
These properties are used in refinery applications and component data may be entered for all library and petroleum components in the Component Refinery Inspection Property Selection Window. Calculation methods and bases for all Refinery Inspection Properties must be defined in the Thermodynamics - Refinery Inspection Property Methods Window.
User Defined Special Properties
This feature allows the user to add refinery properties which are not in the Refinery Inspection Properties list in the Component User-Defined Special Property Selection Window. Calculation methods and bases for all User Defined Special Properties must be defined in the Thermodynamics - User-Defined Special Property Methods Window.
UNIFAC Structures
Pushing the UNIFAC Structures button enables the user to define and modify UNIFAC structural groups for all components.
Solid Properties
You may supply two classes of solid attribute for Solid components:
Particle Size Distribution
Push the Particle Size Distribution button to define the size intervals for each grouping of particles in the Particle Size Distribution for Solids Window. For instance, the first interval could be all particles between 0.0 and 0.02 mm, the second between 0.02 and 0.10 mm, etc. The actual fraction of each solid component which will be distributed to the corresponding interval is specified in the Stream Data - Particle Size Distribution Window. Solid components with Particle Size Distribution attributes may be either Molecular or Non-molecular Components.
General Attributes
Push the General Attributes button to supply the attribute names in the General Attribute Names for Solids Window. User defined General Attributes are not used in any of the standard PRO/II unit operations or calculational procedures but may be accessed via User Added Subroutines or In-Line Procedures. A maximum of 100 attributes may be provided for each component.
Polymer Properties
Note: Particle Size Distribution and General Attribute names for polymer components are defined in the Particle Size Distribution for Solids Window and the General Attribute Names for Solids Window respectively.
Distribution Functions
Push the Distribution Functions button to open the Distribution Functions for Components Window where you specify how various distribution functions will be defined.
Complete technical details may be found in topics under Component Data in the PRO/II Reference Manual.
Related topics