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# A process stream is heated using a shell and tube heat

ISBN: 9780470128671 148

## Solution for problem 12.5 Chapter 12

Process Dynamics and Control | 3rd Edition

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Process Dynamics and Control | 3rd Edition

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Problem 12.5

A process stream is heated using a shell and tube heat exchanger. The exit temperature is controlled by adjusting the steam control valve shown in Fig. E12.5. During an open-loop experimental test, the steam pressure Ps was suddenly changed from 18 to 20 psig and the temperature data shown below were Exercises 233 Steam Figure E12.5 obtained. At the nominal conditions, the control valve and current-to-pressure transducers have gains of Kv = 0.9 psi/psi and K1p = 0.75 psi/rnA, respectively. Determine appropriate PID controller settings using the following approaches: (a) Internal Model Control (select a reasonable value of Tc) (b) ITAE(setpoint) (c) IT AE (disturbance) t(min) Tzm(mA) 0 12.0 1 12.0 2 12.5 3 13.1 4 14.0 5 14.8 6 15.4 7 16.1 8 16.4 9 16.8 10 16.9 11 17.0 12 16.9

Step-by-Step Solution:

Problem 12.5A process stream is heated using a shell and tube heat exchanger. The exit temperature iscontrolled by adjusting the steam control valve shown in Fig. E12.5. During an open-loopexperimental test, the steam pressure Pswas suddenly changed from 18 to 20 psig and thetemperature data shown belowwere obtained. At the nominal conditions, the control valve and current-to-pressure transducershave gains of K = 0.9 psi/psi and K = 0.75 psi/mA, respectively. Determine appropriate PID v 1Pcontroller settings using the following approaches:(a) Internal Model Control (select a reasonable value oc )(b) ITAE(setpoint)(c) IT AE (disturbance) t(min) Tzm(mA) 0 12.0 1 12.0 2 12.5 3 13.1 4 14.0 5 14.8 6 15.4 7 16.1 8 16.4 9 16.8 10 16.9 11 17.0 12 16.9 Step-by-step solution Step 1 of 9 ^The plot with step response and a tangent line from the infection point from the given data isshown in Figure 1.\n Figure 1

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##### ISBN: 9780470128671

This textbook survival guide was created for the textbook: Process Dynamics and Control, edition: 3. Since the solution to 12.5 from 12 chapter was answered, more than 590 students have viewed the full step-by-step answer. Process Dynamics and Control was written by and is associated to the ISBN: 9780470128671. This full solution covers the following key subjects: control, PSI, steam, temperature, Using. This expansive textbook survival guide covers 24 chapters, and 420 solutions. The full step-by-step solution to problem: 12.5 from chapter: 12 was answered by , our top Engineering and Tech solution expert on 11/15/17, 04:03PM. The answer to “A process stream is heated using a shell and tube heat exchanger. The exit temperature is controlled by adjusting the steam control valve shown in Fig. E12.5. During an open-loop experimental test, the steam pressure Ps was suddenly changed from 18 to 20 psig and the temperature data shown below were Exercises 233 Steam Figure E12.5 obtained. At the nominal conditions, the control valve and current-to-pressure transducers have gains of Kv = 0.9 psi/psi and K1p = 0.75 psi/rnA, respectively. Determine appropriate PID controller settings using the following approaches: (a) Internal Model Control (select a reasonable value of Tc) (b) ITAE(setpoint) (c) IT AE (disturbance) t(min) Tzm(mA) 0 12.0 1 12.0 2 12.5 3 13.1 4 14.0 5 14.8 6 15.4 7 16.1 8 16.4 9 16.8 10 16.9 11 17.0 12 16.9” is broken down into a number of easy to follow steps, and 133 words.

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A process stream is heated using a shell and tube heat