(Help wanted) Best practice to change one unit in a biorefinery about biosteam HOT 4 CLOSED

Great, thanks! I'll close this off.

from biosteam.

It's not too hard to change an existing biorefinery configuration:

>>> from biosteam.biorefineries.cornstover import system
>>> import biosteam as bst
>>> # Find saccharification and co-fermentation unit operation
>>> R301 = bst.find('R301') 
>>> # Create instance with the same input and output streams
>>> R301 = NewUnitOperationSubclass(ID=R301.ID, ins=R301.ins, outs=R301.outs) 

However, the System and TEA objects would need to be recreated for the biorefinery. One workaround for this is to (instead) cast the existing unit operation to another unit operation:

>>> # This workaround is NOT recommended
>>> R301.__class__ = NewUnitOperationSubclass

But this may present odd problems later, and I do not recommend it. Preferably, its best if you copy the biosteam.biorefinery.cornstover.system script, and replace the line where R301 is created. Because this represents a new configuration, I also recommend setting the flowsheet name at the start of the script:

>>> new_flowsheet = bst.Flowsheet('cornstover_with_new_fermentation_model')
>>> bst.find.set_flowsheet(new_flowsheet )

Hope this helps!

from biosteam.

Thanks for the help! I agree it'll be easier to copy the script and change what I need to.
A side question - is the "NewUnitOperationSubclass" a really function or you just used it to indicate whatever new unit I want to create?

from biosteam.

"NewUnitOperationSubclass" just indicates the unit you'd like to create :)

from biosteam.