Water (F1) is blended with a stream F2 with 40% ethanol to
Chapter 18, Problem 18.18(choose chapter or problem)
Water (F1) is blended with a stream F2 with 40% ethanol to make a whiskey product that is 30% ethanol. Assume F1 = 6 gal/min and F2 = 2 gaUmin. (a) Develop a steady-state material balance model for the blending operation. Find the linearized gains for the 2 X 2 transfer function model using Example 18.3 as a guide. F1 and F2 are manipulated variables, and the controlled variables are the outlet composition z and the total flow rate F. (b) Determine the RGA and the preferred pairing for the controllers.
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