Process control Solution for Exam December 2014
Problem 1
a) Balances: Energy balances over (1) heat exchanger (the 'box') and (2) the mixing
point. For the heat exchanger we have assumed perfect mixing (simplied) and
for the mixing point no mass (reasona

Process control Proposed Solution for Midterm Exam
12. October 2012
Student number:12102012
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Proess Control - Midterm Exam
09 Otober 2013
Answer the questions on the separate answer sheet.
1. (25 points) Consider the following transfer funtion
g(s) =
(a)
(b)
()
(d)
(4s + 1)es
(2s + 1)2 (6s + 1)
(1)
Approximate by a rst-order model using the half-

Department of Chemical Engineering
Examination paper for TKP 4140 Process Control
Academic contact during examination: Sigurd Skogestad
Phone: 91371669
Examination date: 18 December 2014
Examination time (from-to): 09:00 13:00
Permitted examination suppor

Process control TKP414O _ Midterm Exam
October 2016
SLUTK0N 5M5)
Student number:
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P

Appendix
H
Dynamic Models and
Parameters Used for
Plantwide Control Chapters
H.1 ENERGY BALANCE AND
PARAMETERS FOR THE REACTOR/
DISTILLATION COLUMN MODEL
(APPENDIX F)
Parameters in Table H.1and controller settings in TableH.2
were used in the simulations

Appendix
I
Instrumentation
Symbols
Process control systems and instrumentation can be described in several ways. Flowsheets show the process
equipment, instruments, and control systems, as well as
interconnections, such as piping and electrical and
pneuma

Chapter
21
Process Monitoring
In industrial plants, large numbers of process variables
must be maintained within specified limits in order for
the plant to operate properly. Excursions of key variables beyond these limits can have significant consequences

Appendix
F
Introduction to Plantwide Control
Previous chapters have generally concentrated on the
analysis and design of simple control systems, from single loops (such as reactor temperature control) to single
processing units with multiple loops (e.g.,

Process control TKP4140 Midterm Exam - Proposed
Solution
October 2016
Write your
student number
on every page.
Write your answers in the designated spaces.
Do
not
separate the sheets.
If you need extra space, use the extra pages in the end.
Problem 1

1
Department of Chemical Engineering
Examination paper for TKP 4140 Process Control
Academic contact during examination: Sigurd Skogestad
Phone: 91371669
Examination date: 14 December 2013
Examination time (from-to): 09:00 13:00
Permitted examination supp

Appendix
K
Contour Mapping and the
Principle of the Argument
The concept of contour mapping is illustrated in
Fig. K.1. A closed contour Cs in the complex s-plane is
mapped by a transfer function H(s) into another closed
contour CH in the complex H-plane.

Appendix
J
Review of Basic Concepts
From Probability and Statistics
In this Appendix, basic probability and statistics concepts are reviewed that are considered for the safety
analysis of Chapter 9 and the quality control charts of
Chapter 21.
Similarly,

Appendix
G
Plantwide Control System Design
In this chapter, we describe a hierarchical design procedure that can be used to develop multiloop and
multivariable measurement and control strategies for
plantwide control systems. The procedure assists the
eng

N orges teknisknaturvitenskapelige universitet
Institutt for kjemisk prosessteknologi
EKSAMENSOPPGAVE I FAG TKP 4140 Prosessregulering
EXAM IN COURSE TKP 4140 ~ Process control
Date: 19 December 2012
Tin/Lez09200 - 13:00
Contact: Professor Sigurd Skoges

394
Chapter 18 Batch Process Control
The reaction rate is first order with a rate constant (in min -I)
k =
2.4
X lOIS e-20 ,OOOIT (Tin OR).
For the batch case, linearize the model around T = T.
18.10 A batch reactor converts component A into B, which
(I)

Chapter
19
Real-Time Optimization
Previous chapters have considered the development of
process models and the design of controllers from an
unsteady-state point of view. Such an approach focuses
on obtaining reasonable closed-loop responses for setpoint c

Chapter
23
Dynamics and Control
of Biological Systems
Previous chapters have emphasized the design of controllers for chemical process systems, as well as for
biomedical systems (Chapter 22). In this chapter, we
consider the analysis of intrinsically clos

Proess ontrol Proposed Solution for Midterm Exam
09 Otober 2013
Student number: 09102013
Write your student number on every page of the answer sheet.
Write your answers in the designated spaes of this answer sheet.
Do not separate the answer sheets.
Pr

1
Department of Chemical Engineering
Midterm examination for TKP 4140 Process Control
Date: 08 October 2015
STUDENT NUMBER: -
Write your student number on top right of all pages
Write your answer on the enclosed pages.
Use the last two pages for details i

NTNU Trondheim
Norwegian University of
Science and Technology
Department of Chemical Engineering
Midterm examination for TKP 4140 Process
Control
Date: 08 October 2015
soulrxw
STUDENT NUMBER: -
. Write your student number on top right of all pages.
0 Writ

Process control Midterm Exam
12. October 2012
Answer the questions on the separate answer sheet.
1. (30 points) Consider a tank with on inflow and one outflow, as given in Figure 1. Assume
constant density, = const.
Parameters:
Q0 (t)
A = 10m2
m3
min m
m3

Chapter
22
Biosystems Control Design
Previous chapters have introduced the concepts of
process dynamics and strategies for process control,
emphasizing traditional applications from the petrochemical industries, such as chemical reactors and distillation

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Dynamics and PID control
Sigurd Skogestad
Process dynamics
Things take time
Step response (response of output y to step in input u):
k = y()/ u process gain
- process time constant (63%)
- process time delay
Time constant : Often equal to residence t

Department of Chemical Engineering
Examination paper for TKP 4140 Process Control
Academic contact during examination: Sigurd Skogestad
Phone: 91371669
Examination date: 11 December 2015
Examination time (from-to): 09:00 13:00
Permitted examination suppor