Enhance control performance I am responding to “ Enhance process control performance,” (October 2003) by C. L. Smith, in particular to the second “Two-tank recycle pro..
Enhance control performance
I am responding to “
Enhance process control performance,” (October
2003) by C. L. Smith, in particular to the second “Two-tank
recycle process” example. This is typical of starting a detailed
control design before setting the correct process objectives to
begin with.
In the two-tank recycle process
example, the tanks’ purpose is completely overlooked. What is the
need of surge tanks? To provide surge! Therefore, the process
objective is to minimize draining at all times by:
Start draining only if both tank levels
are maximized (i.e., maximum 80% level).
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