Pull Out: Oper. Conds Tab

PullOutOperConds.jpg
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

 

○ Pull Out To Port / Stream
Indicates the output port that is connected to the pull out stream. If an output 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 Output Port

● Requested Amount (kg)
The amount (in mass) of material that is requested to be pulled out of the vessel.

0.0

Positive

● Available Amount (kg)
The amount (in mass) of material that is available for pulling out of the vessel.

0.0

Positive

● Percentage Pulled Out (% of vessel contents)
The amount (in mass) of material that is pulled out expressed as a percentage of vessel contents.

100.0

0-100

● Mass Pulled Out (kg)
The amount (in mass) of material that is pulled out. Note that the amount is scalable.

0.0

Positive

● Volume Pulled Out (L)
The amount (in volume) of material that is pulled out. Note that the amount is scalable.

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.

0.0

Positive

◙ 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

○ 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

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 Pull Out: Modeling Calculations.

The Pull-Out Oper.Cond’s interface is, in many ways, similar to the Transfer Out interface, see Transfer Out: Oper. Conds Tab. You can think of a Pull-Out operation as a Transfer Out Operation, with one very important difference: While for a transfer out operation, you specify the amount being transferred as part of the operation’s setup, in a pull-out operation that amount is already specified by some downstream operation (e.g. a wash). Notice that the boxes showing the amount-related data (percentage, mass, volume) are always greyed out – i.e. they cannot be edited by the user.

•Duration options...

The duration of the operation can be calculated by the following ways:

a)  Set directly the user

b)  Calculated based on a user-specified mass or volume flow rate, or

c)   Tied up to another operation or operation sequence by exploiting the Master-Slave relationship. If you introduce a master-slave relationship, the program will match the setup time, the process time and the turnaround time of this operation (the ‘slave’) with the corresponding times of the reference operation (the ‘master’ operation). For more details on how to setup a master-slave relationship, see The Scheduling Tab.

See Also

●      Transfer Out