ChE 381
Fall 2013
Homework #1, due Fri Sept 6th
This assignment covers chapters 2 and 4.
Individual:
1. A well-insulated carbon steel tank (10 kg) filled with 20 kg of 150C water is to be used to cool a 2-kg
quartz slug, initially at 6500C. Use Cp,298 and
ChE 381 Fall 2013
HW #3
due 9/18/13
Group
1. Two streams of nitrogen are mixed in a steady-state process. The first inlet stream has a flowrate of
5.0 mol/s and is at 500K, 2.0 atm. The second inlet stream is at 1.0 mol/s, 400K, 0.5 atm. The product
strea
ChE 381 Exam 3
May 9th, 2013
Page 1 of 5
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have neither given nor received unauthorized aid on this examination. I am sitting in the seat that was
ass
ChE 381
Fall 2013
Homework #1, due Fri Sept 6th
This assignment covers chapters 2 and 4.
Group:
1. You need to produce air at P2 bar, 350K from air at 1 bar, 350K. There are two proposed process
designs:
(1)
Cool at constant P, then heat at constant V
(2)
ChE 381 HW #2 Fall 2013
Due Wed 9/11/13
Group
1. For the system described in HW #1: group problem #3, find the volumetric flowrate of (a) the reactor
feed stream and (b) the product gas leaving the cooler. This time, assume that both streams have a total
ChE 381 HW #2 Fall 2013
Due Wed 9/11/13
Individual
1. Chlorine gas is compressed isothermally from 2 bar to 5, 20, 60 and 100 bar. Using eq 3.27, calculate
the percent difference between W values calculated assuming ideal gas behavior versus using the PR
ChE 381 Fall 2013
HW #3
due 9/18/13
Individual
1. In a steady-state open system, 5.0 mol/s of air is expanded in an adiabatic turbine from 500K, 5.0 bar
to T2, P2. Assuming ideal gas behavior, calculate W, Wideal, Wlost, % of Wideal lost as Wlost and SG.
ChE 381
Homework #4
Due 10/2/13
Individual:
1. 1.0 mol/s of methane vapor at 350K is isothermally expanded from 100 bar to 10 bar in an
environment with a temperature of 298K.
(a) Calculate Wideal for this process, assuming ideal gas behavior.
(b) Estimat
ChE 381
Homework #5
Due 10/9/13
INDIVIDUAL:
1. 1 mol/s of acetylene gas at 200K, 5.0 bar is compressed to 50 bar in an adiabatic process. The
compressor has a rated efficiency of 75%.
a. What would the outlet temperature be during isentropic operation? (~
ChE 381 Fall 2013
ChE 381: CHEMICAL ENGINEERING THERMODYNAMICS
Chemical and Biological Engineering, Fall 2013
This course will cover the application of thermodynamic principles to chemical engineering problems.
Topics include thermodynamic properties of f
ChE 381 Fall 2013
Carnot Cycle Supplementary Materials
Carnot Cycle animation link:
http:/galileoandeinstein.physics.virginia.edu/more_stuff/flashlets/carnot.htm
Carnot Cycle-related patent abstracts. To read an entire patent application, go to
http:/patf
REVIEWS OF MODERN PHYSICS, VOLUME 81, JANUARYMARCH 2009
Colloquium: The physics of Maxwells demon and information
Koji Maruyama
Advanced Science Institute, RIKEN (The Institute of Physical and Chemical Research),
Wako-shi 351-0198, Japan and CREST, Japan
Comprehensive Control of Atomic Motion
Mark G. Raizen
Science 324, 1403 (2009);
DOI: 10.1126/science.1171506
This copy is for your personal, non-commercial use only.
If you wish to distribute this article to others, you can order high-quality copies for y
ChE 381 Exam 4
December 10, 2012
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ChE 381 Exam 3
April 5th, 2013
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a
T1= 200
T2= 201
Tc= 308.3
Acetylene
A
B
C
D
Tau
6.132
0.001952
-129900
1.005
Initial:
Z Guess
1
0.9353275129
0.9298653787
0.9293698676
HR/RT
SR/RT
HR
SR
P1= 5
P2= 50
R= 8.314
Pc= 61.39
VW Equation:
Initial T
Final T = 342 K
0
0
0
0
0.125
0.125
0.421875
0.
Homework #5 Individual
ChE 381
Luke Kerns
3/
2) Find a patent application filed after 2006 that involves Atkinson, Miller or Brayton cycle. In one paragraph,
summarize the invention. Include a description of: (a) what have the inventors claimed to do that
ChE 381 Exam 1
September 16, 2011
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have neither given nor received unauthorized aid on this examination.
Name (print) _
Student ID # _
Si
ChE 381 Exam 1
September 14, 2012
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ChE 381 Exam 1
February 8, 2013
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ChE 381 Exam 2
October 5, 2012
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ChE 381 Exam 2
March 6, 2013
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have neither given nor received unauthorized aid on this examination. I am sitting in the seat that was
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ChE 381 Exam 3
November 2, 2012
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ChE 381 Exam 3
April 1, 2011
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R= 8.314
Pressure Ratio
a
b
c
d
P2/P1
2.5
10
30
50
Basis: 1 mol Cl2 Gas
J/(mol*K)
Final Pressure
5
20
60
100
Temps: K
Percent Difference
a
In Work between
b
Ideal Gas and PR
c
EOS
d
400
1.9%
4.9%
17.9%
28.7%
450
1.2%
3.1%
7.6%
13.1%
500
0.8%
2.0%
4.4%
6.6