Load and Split: Oper. Conds Tab

Variable Definitions, Ranges and Default Values

The following table shows a brief description of the variables appearing in this tab. The table also displays their default values and their generally acceptable range:

Variable	Default Value	Range

○ Load Using (Port / Stream) Indicates the input port that is connected to the load stream. If an input stream is already present at the selected port, then the button next to the selection is active. Click on the button to bring up the attached stream’s simulation dialog in order to provide the composition of the material being charged.	<None>	Any Input Port
○ Scalable Amount Check this box to scale the amount of material being transferred in.	Yes	Yes/No
◙ Mass (kg) The amount (in mass) of material being transferred in.	0.0	Positive
◙ Volume (kg) The amount (in volume) of material being transferred in.	0.0	Positive
○ Setup Time (min) The amount of time (per cycle) spent before each operation is carried in preparation for the actual execution of the operation. It may involve actions like cleaning, vacuuming, setting up of equipment, etc. which the user opted not to model explicitly.	15.0	Positive
◙ Process Time (min) The actual duration of the operation (per cycle).	0.0	Positive
○ Ignore Labor? Check this box to ignore labor for this operation. This option is used only if the process time is set by a master-slave relationship.	Yes	Yes/No
◙ Mass Flowrate (kg/h) The rate of transfer of material (on a mass basis). If the number of units is greater than one, then this rate represents the mass transfer rate per unit.	600.0	Positive
◙ Volumetric Flowrate (L/h) The rate of transfer of material (on a volume basis). If the number of units is greater than one, then this rate represents the volumetric transfer rate per unit.	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 Load and Split: Modeling Calculations.

•Load Using (Port / Stream)...

You must always select a stream for loading material. This stream can be either an input stream of the procedure that this operation is participating, or an intermediate stream, output of another procedure.

•Amount Options...

There are 3 amount specifications options available:

a) Amount can is specified in the input stream (as in Charge / Transfer In operations)

b) Specify the load mass

c) Specify the load volume

•Scalable...

If you chose to specify the load mass / volume indicate whether the absolute amounts for flowrate are ‘Scalable’ with process throughput adjustment. (This implies that if the user chooses to adjust the process throughput by a factor the user-specified load mass/ volume will also be adjusted by the same factor.)

•Duration Options...

In a Load and Split operation, you have the option to either set the duration (explicitly or implicitly by setting the flowrate) or allow the duration to match exactly the duration of another operation either in the same procedure or in another procedure.

There are 3 options for the duration for this operation:

a) You can either set the Load and Split time directly, or

b) The process time can be calculated based on the mass/volumetric flowrate

c) You can match the duration of this operation with the duration of another operation by introducing a master-slave relationship between the two operations. The program will match the setup-time, the process time and the turnaround time of this Load and Split operation (the ‘slave’) with the corresponding times of the reference operation (the ‘master’ operation). For more on master-slave relationship, see The Scheduling Tab.