Multi-Effect Evaporation: Power Tab

This tab appears on the interface dialog of the Continuous Multi-Effect Evaporation operation if the Vapor Recompression Option is set to “None” or “Thermal Vapor Recompression” in the Oper. Conds Tab (see Multi-Effect Evaporation: Oper. Conds Tab).

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab; for a detailed description of these variables, see Multi-Effect Evaporation: Description of Terms The table also displays their default values and their generally acceptable range. Note that due to how the variables are used in the modeling equations, the range of acceptable values may be further reduced; for more details, see Multi-Effect Evaporation: Modeling Assumptions & Constraints.

Variable	Default Value	Range

○ Power Type Indicates the power type that is used by the operation. Click on the list box to bring up a list of available power types in order to select one.	Std Power	Any Power Type
◙ Power (kW) The power consumption for this operation (for pumps, etc.)	0.0	Positive
◙ Power Per Unit (kW) The power divided by the number of multi-effect evaporator units.	0.0	Positive
◙ Specific Power (Per Capacity Unit) (kW/kg-h) The power divided by the evaporation capacity.	0.0	Positive

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

Specification Choices / Comments

The following list describes the available specification choices in this tab; for more details on how these are implemented, see Multi-Effect Evaporation: Modeling Calculations.

•If the Power option is set to ‘Set Power’...

You can specify the power that is consumed by implicit equipment (e.g. pumps, etc.) in this operation. SuperPro Designer’s simulation engine will calculate the respective values for the power per unit and the specific power.

•If the Power option is set to ‘Set Power Per Unit’...

You can specify the power per unit for this operation. SuperPro Designer’s simulation engine will calculate the respective values for the power and the specific power.

•If the Power option is set to ‘Set Specific Power (Per Capacity Unit)’...

You can specify the specific power for this operation. SuperPro Designer’s simulation engine will calculate the respective values for the power and the power per unit.