
User Unit Operation 6-7
6-7
The first feed and first product nozzles are always active, but the
other four nozzles can be activated or deactivated depending on
the type of requirements of your User Unit Operation. Attach
streams to the nozzles in the matrices directly below the nozzle
names. Highlight the <empty> cell and select an available
stream name from the drop-down list, or enter the stream name
directly. To change the name of the nozzle, simply click on the
appropriate field and begin typing.
If you want a second nozzle for feed or product streams, select
the checkbox directly to the right of the second stream nozzle
field (Feed2 or Product2). The Connections page changes and
activates another matrix. This matrix allows you to attach the
streams to a second stream nozzle.
If your User Unit Operation requires Energy streams, select the
checkboxes to the right of the Energy In or Energy Out fields
and once again, a stream matrix becomes visible.
Nozzles can also be configured programmatically. This is the
preferred mechanism when designing a User Unit Operation that
may be added multiple times to a flowsheet or different cases.
Code Page
On the Code page, you add the Visual Basic® compatible code
that defines the behaviour of your User Unit Operation.
Figure 6.6
Refer to the code in
Section 6.4 -
Dehumidifier Example
for an example of
automatically configuring
nozzles in the Initialize
sub-routine.
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