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Process Control: Modeling, Design, and Simulation by B. Wayne Bequette

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Student Exercises

1:Consider the gas drum in Example 2.1. Often the outlet flow relationship is actually nonlinear, with the form

so the modeling equation is

Discuss whether this is now a self-regulating process. Also, sketch the steady-state input (qis) -output (Ps) curve, based on the flow coefficient, β = 1 mol · s1 · atm1/2 and a constant header pressure, Ph = 1 atm.

2:Consider the heated mixing tank example, which had the modeling equations

For steady-state inlet and outlet flow rates of 100 liters/minute, a liquid volume of 500 liters and ...

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