This unit operation performs no composition transformations on discrete entities that are fed into the unit. It simply allows the discrete entities to pass through it. It can be useful in simulating processing steps that involve no physico-chemical transformation, yet they incur some cost (e.g. inspection, weighing, etc.).
● Discrete Pass-Through Generic Box Procedure
If the equipment size option is in Design Mode and the operating throughput exceeds the maximum throughput, then, the program assumes multiple, identical units operating in parallel with an operating throughput of less than the maximum. If the equipment size option is in Rating Mode and the operating throughput exceeds the rated throughput of the step (which is equal to the rated throughput of each unit times the number of units), a warning message is displayed advising the user to increase the number of units or reduce the operating throughput.
To account for electricity consumption, the user can either specify the power demand (in kW) or the specific power requirement (in kW/parts-min). In the second case, the specific power requirement times the operating throughput yields the power consumption.
The interface of this operation has the following tabs:
● Oper. Cond’s, see Discrete Pass-Through (in a GBX): Oper. Conds Tab
● Utilities, see Discrete Throughput Operations: Utilities Tab
● Labor, etc, see Operations Dialog: Labor etc. Tab
● Description, see Operations Dialog: Description Tab
● Batch Sheet, see Operations Dialog: Batch Sheet Tab
● Scheduling, see Operations Dialog: Scheduling Tab