Evaporative Crystallizer: Equipment Tab

Variable Definitions, Ranges and Default Values

The following table shows the meaning of the variables appearing in this tab, as well as their default values and their generally acceptable range. Note that due to the manner by which the variables are used by the sizing and costing equations, the range of acceptable values may be further reduced.

Variable	Default Value	Range

◙ Heat Transfer Area The total area where heat transfer takes place.	0.0 m²	Positive
○ Max Heat Transfer Area The desired upper limit of the sizing variable. Used only in design mode to determine if multiple units are required.	50.0 m²	Positive

Symbol Key: ○ User-specified value (always input); ● Calculated value (always output); ◙ Sometimes input, sometimes output

Sizing: Design Mode

In design mode, the software will size the unit based on the demand on mean heat transfer area. If the heat transfer area exceeds the specification for the maximum heat transfer area then the software will assume multiple number of identical units that are operated in parallel.

Sizing: Rating Mode

In User-Defined (Rating Mode), the user specifies the Number of Units and the Heat Transfer Area.

Costing

The equipment purchase cost is based on the heat transfer area. It is supplied by the built-in model assuming as material of construction CS.

For more information on this equipment, see Evaporative Crystallizer.

For information on the left-hand side variables and options, see Equipment Data Dialog: Equipment tab.