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CHE
202Problem
set#8
11.30 (a)(b)(c)(d)
(Text: Felder and Rousseau)
1. Two consecutive, first order reactions take place in each of the two perfectly mixed,
isothermal continuous reactors (CSTR) in series.
k2
k1
A
B
C
Volumetric flow rates (F) and densiti
CHE202
Problem
set#1
1. The Los Angeles basin floor covers approximately 700 square miles (1 mile = 5280 ft) and is
almost completely surrounded by mountain ranges. We shall treat the Los Angeles basin as a
CSTR in which there are no spatial variations in
CHE 202 Problem set #4
1. The irreversible reaction
A
k
B
is carried out in a reactor that initially contains 1.5 m 3 of solution with a concentration of 1 kmol
of A per cubic meter of solution. A solution containing 0.50 kmol of A/m3 enters the tank at a
CHE
202Problem
set#7
11.25, 11.26, 11.27, 11.28, 11.29
(Text: Felder and Rousseau)
1. Water is evaporating into initially dry air in the closed cylindrical vessel shown. The inside
diameter of the vessel is 10 cm and the height is 20 cm. The vessel is iso
CHE
202Problem
set#9
1. An experimental arrangement for measuring the thermal conductivity of solid materials
involves the use of two long rods that are equivalent in every respect, except that one is
fabricated from a standard material of known thermal
Answers to problem set #1
1. (a) The emission rate, FCO, of carbon monoxide into the basin is 1.38 5 lbmol/hr
10
(b) The emission rate of carbon monoxide from Santa Ana wind is
FCO = (12)(20)(2000)(5280)2(2.04 -10) = 2.73 3 lbmol/hr
10
10
(c) Determine th
CHE 202 Problem set #6
3 tank containing helium at 15 bar and 22oC will be used to supply 4.5 moles per
1. A 0.2 m
minute of helium at atmospheric pressure using a controlled adiabatic throttling valve.
a. If the tank is well insulated, what will be the p
CHE202
Problem
set#2
1. Into a 1000-gal tank, initially filled with 100 gal of fresh water (density = 62.4 lb/ft 3), salt
water containing 1.92 lb/gal of salt flows at a fixed rate of 4.0 GPM. The density of the incoming
solution is 71.807 lb/ft3. The sol
CHE 441 (Fall 2006)
_
LAST NAME, FIRST
Problem set #6
1) A 1000 lb-mole per hour mixture of 5% methane, 20% ethane, 25% propane, 30% n-butane,
and 20% n-pentane at 14.7 psia and 90 F is to be compressed first to 50 psia, then to 200 psia
using a two-stage
CHE 441 (Fall 2006)
_
LAST NAME, FIRST
Problem set #5
Figure 1b PFD for the Production of Acrylic Acid from Propylene
1. For the accrylic process shown in Figure 1b (Turton et al, Analysis, Synthesis, and Design of
Chemical Processes), check the design sp
CHE 441
_
LAST NAME, FIRST
Problem set #8 , ,3
1 2
1. In a fire-tube boiler, hot products of combustion flowing through an array of thin-walled
tubes are used to boil water flowing over the tubes. At the time of installation, the overall heat
transfer coe
CHE 441
_
LAST NAME, FIRST
Problem set #7
1. A concentric tube heat exchanger uses water (Cp = 4178 J/kg.K) , which is available at
15oC to cool ethylene glycol (Cp = 2650 J/kg.K) from 100 to 60 oC. The water and glycol
flow rates are each 0.5 kg/s. Deter
CHE 441 (Fall 2006)
_
LAST NAME, FIRST
Problem set #1
(1) Figure 1 shows the schematic of a process for treating residential sewage. In this simplified
process, sewage at a rate of 6000 gal/min is pumped into a well-mixed aeration tank where the
concentra
CHE 441
_
LAST NAME, FIRST
Problem set #9 , ,3
1 2
1. Run the program Microplant as an Expert Troubleshooter and turn in the last display of the
program.
2. A continuous fractionating column is required to separate a mixture containing 0.40 mol
fraction n
CHE 432 (Answers for Homework) Answers for problem set #8, Winter 2005 4.15 (a) 3.210-4 M, (b) 0.0266 m/h (c) 1,128 h
4.16 (a) K = 0.20 cm/s (b) 298 s
5.2 (a) CMFR (b) 41 m3 (c) 16 m3/hr
5.5
(a) C = C1exp(-k) 1 1 - exp - 1 + k ( t - t ) 1 (b) C = C1 1 + k
CHE 432 (Answers for Homework)
Answers for problem set #2, Winter 2005
1.6
(a) 5.61 8 metric ton CO2/year, (b) emission rate is 4.1% of the CO2 in the atmosphere
10
1.7
4 months
1.9
(a) 11.6 hr
(b) about a week
1.12 25.2 days
1.13
(a) 5.58 9 m3, 6.67 9 m3
_
Last Name, First
CHE426: Problem set #3
1. An isothermal, first-order, irreversible reaction A B with rate constant k takes place in the
liquid phase in a constant-volume reactor. Due to imperfect mixing, the reactor system can be
modeled as a two-tank
CHE 426 (Winter 2011)
_
LAST NAME, FIRST
Set #1
Note: Your answers must be correct to 3 significant figures and have the appropriate units.
Matlab solutions are not acceptable
1. = + +
A = 0.8
B = 0.1715
C = 0.9716
2. Given Y(s) = ,determine y(t) y(t) = [
_
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CHE426: Problem set #4
1. An engineer has designed a system in which a positive-displacement pump is used to
pump water from an atmosphere tank into a pressurized tank operating at 150 psig. A control
valve is installed between the pump
_
Last Name, First
CHE426: Problem set #3
(Need to show all the works. Except for plot or numerical calculation, Matlab solutions
are not acceptable)
1. An isothermal, first-order, irreversible reaction A B with rate constant k takes place in the
liquid p
_
Last Name, First
CHE426: Problem set #2 (Matlab solutions are not acceptable)
1. Solve the following equations by using Laplace transforms1.
(a) + + x = 1
(b) + 2 + x = 1
(c) + 3 + x = 1
x(0) = x(0) = 0 (Note: x = )
x(0) = x(0) = 0
x(0) = x(0) = 0
Use M
_
Last Name, First
CHE426: Problem set #2
1. Solve the following equations by using Laplace transforms1.
(a) + + x = 1
(b) + 2 + x = 1
(c) + 3 + x = 1
x(0) = x(0) = 0 (Note: x = )
x(0) = x(0) = 0
x(0) = x(0) = 0
Use Matlab to plot the behavior of these so
_
Last Name, First
CHE426: Problem set #51
1. A thermometer having a time constant of 0.2 min is placed in a temperature bath, and after
the thermometer comes to equilibrium with the bath, the temperature of the bath is increased
linearly with time at a r