Chemical Engineering > GATE 2023 > Non-Ideal Reactors
The outlet concentration CA of a plug flow reactor (PFR) is controlled by manipulating the inlet concentration CA0. The following transfer function describes the dynamics of this PFR.
CA(s) / CA0(s) = exp[−(V / F)(k + s)]
In the above equation, V = 1 m3, F = 0.1 m3min−1, and k = 0.5 min−1. The measurement and valve transfer functions are both equal to 1. The ultimate gain, defined as the proportional controller gain that produces sustained oscillations, for this system is ______ (rounded off to one decimal place).
CA(s) / CA0(s) = exp[−(V / F)(k + s)]
In the above equation, V = 1 m3, F = 0.1 m3min−1, and k = 0.5 min−1. The measurement and valve transfer functions are both equal to 1. The ultimate gain, defined as the proportional controller gain that produces sustained oscillations, for this system is ______ (rounded off to one decimal place).
Correct : 63
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