Spring 2003
10.450 Process Dynamics, Operations, and Control
Exam 1
from the 10.450 Policies: "The grade for either test may be raised by reworking the test out of class and
turning it in the next class meeting. Final test grade will then be 2/3 in -class
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 8
1. You have an 1800 kg h-1 stream of hexane at 100C. Calculate the pressure drop for a fullyopen valve of Cv = 17.
estimating pressure drop through fully open valve, given mass
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 8
1. You have an 1800 kg h-1 stream of hexane at 100C. Calculate the pressure drop for a fullyopen valve of Cv = 17.
2. Environmental disaster! There was a spill of BaD4 StUF 2
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 7
In this problem set, youll introduce a new capability and verify that your simulator is working
properly.
1. First, install dead time between the manipulated variable (mv) and
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 6
Were interested in good control, so well practice tuning with your process simulator.
1. First we must review the Bode plots. Choose a disturbance gain of 0.5 and time constant
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 5
In an effort to get a better idea of the behavior of dynamic systems, we should put the computer
to work. Get these Matlab files:
sim450 - a script that maintains running arra
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 4
In PSet 3, we worked with a third-order system.
*
dT1
1
B
*
*
*
*
+ T1 =
Ti +
To
T1 (0) = 0
dt
1+ B
1+ B
*
dT
*
*
*
*
t 2 2 + T2 = T1 + CQ
T2 (0) = 0
dt
t1
*
dTo
1
B*
*
*
*
+ To
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 3
1. You are responsible for a reactor in which an
exothermic liquid-phase reaction occurs. The feed
must be preheated to the threshold activation
temperature of the catalyst, bu
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 3
1. You are responsible for a reactor in which an
exothermic liquid-phase reaction occurs. The feed
must be preheated to the threshold activation
temperature of the catalyst, bu
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 2
1. Harvey goes his own way in the world. Harveys bathtub is a half- cylinder of radius 30
cm, length 160 cm. When he welded it up from scrap pipe, he neglected to install an
ov
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 2
1. Harvey goes his own way in the world. Harveys bathtub is a half-cylinder of radius 30 cm,
length 160 cm. When he welded it up from scrap pipe, he neglected to install an ove
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 1
Solve these equations. Viewing them as dynamic systems, plot the disturbances and responses
over appropriate time intervals.
0 t<2
dy
y (0) = 1
x(t ) =
dt
2 t 2
Write in stan
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 1
Solve these equations. Plot the independent and dependent variables over appropriate time
intervals.
1. 0.3 y 0.8 x =
dy
dt
d2y
dy
2.
= 0.6 1.2 y
2
dt
dt
y (0) = 1
y (0) = 1,
Spring 2002
10.450 Process Dynamics, Operations, and Control
Final Exam
In approaching the problems, take great care to identify the process, controlled variable, etc. Use the various
tools block diagrams, transfer function equations to define the problem
Spring 2003
10.450 Process Dynamics, Operations, and Control
Exam 2
from the 10.450 Policies: "The grade for either test may be raised by reworking the test out of class and
turning it in the next class meeting. Final test grade will then be 2/3 in-class
Spring 2003
10.450 Process Dynamics, Operations, and Control
Problem Sets - 10
Marlin gives transfer functions for closed loop cascade and feedforward
systems. He also gives examples in which numerical simulation was done
for disturbance response. Lets ex