Chemical Engineering 150B- Fall 2005 Problem Set #3 Due Wednesday September 21st, 2005 Note: There are 3 problems in this assignment (see back of both pages). Problem 1. (15 points) A common procedure
Chemical Engineering 150B- Fall 2005 Problem Set #1 Solutions Problem 1. (10 points) For a binary mixture with species A and B, are the following relations either "always true," "always false," or "so
Chemical Engineering 150B- Fall 2005 Problem Set #11 Due Friday December 9th, 2005 200 points Note: There are 7 problems in this assignment (see both pages). Problem 1. (40 Points) A distillation oper
Chemical Engineering 150B- Fall 2005 Problem Set #5 Solutions Problem 1. (20 points) In a wetted-wall tower where ammonia, NH3, was stripped from an ammonia-water solution into an air stream, the over
Chemical Engineering 150B- Fall 2005 Problem Set #5 Solutions
Problem 1. (20 points) In a wetted-wall tower where ammonia, NH3, was stripped from an ammonia-water solution into an air stream, the ove
Chemical Engineering 150B Fall 2005 Problem Set #1 Due Wednesday September 7th, 2005 Note: There are 5 problems in this assignment (see back of both pages). Problem 1. (10 points) For a binary mixture
Chemical Engineering 150B- Fall 2005 Problem Set #8 Solutions
Problem 1. (25 Points) In the figure below, the heavier components in a slightly superheated hydrocarbon gas are to be removed by absorpt
Chemical Engineering 150B- Fall 2005 Problem Set #2 Due Friday September 16th, 2005 Note: There are 4 problems in this assignment (see back of both pages). Problem 1. (25 Points) Dilute concentrations
Chemical Engineering 150B- Fall 2005 Problem Set #3 Solutions Problem 1. (15 points) A common procedure for increasing the moisture content of air is to bubble it through a column of water. The air bu
Chemical Engineering 150B- Fall 2005 Problem Set #2 Solutions Problem 1. (25 Points) Dilute concentrations of toxic organic solutes in aqueous solution can be often degraded by a "biofilm" attached to
Chemical Engineering 150B- Fall 2005 Problem Set #9 Solutions
Problem 1. (20 Points) Determine by the Kremser method the separation that can be achieved for the absorption operation indicated below f
Chemical Engineering 150B- Fall 2005 Problem Set #8 Due Wednesday October 26th, 2005 Note: There are 5 problems in this assignment (see both pages).
Problem 1. (25 Points) In the figure below, the he
Chemical Engineering 150B- Fall 2005 Problem Set #11 Solutions (165 point assignment) Problem 1. (40 Points) A distillation operating will separate a mixture of 8 components with the following feed ra
Chemical Engineering 150B- Fall 2005 Problem Set #10 Solutions
Problem 1. (15 Points) Using the data below, construct the following graphs: (a) An equilateral ternary diagram of acetone as the solute
Chemical Engineering 150B- Fall 2005 Problem Set #10 Due Wednesday November 23th, 2005 Note: There are 5 problems in this assignment (see back).
Problem 1. (15 Points) Using the data below, construct
43. 12.11
A 2007 Toyota Prius has a drag coefficient of 0.26 at road speeds, using a reference area of 2.33 m 2.
Determine the horsepower required to overcome drag at a velocity of 30 m/s. Compare thi
Chemical Engineering 150A
Spring Semester, 2011
Homework 13: Convection
SOLUTIONS
2)
3)
(b) Check the Biot number
Bi =
hV hD (105.2)(0.01)
=
=
= 0.0011
kA 4k
4(240)
Since Bi < 1, a lumped capacitance
Chemical Engineering 150A
27, 2015
April
Problem Set #14
(Note: There will be a Problem Set #15)
68. The temperature profile for transient heating of a slab of half thickness x1 initially at
temperatu
Chemical Engineering 150A
February 4, 2015
Problem Set #2 Solutions
Problem 7 (7.14)
An auto lift consists of 36.02-cm-diameter ram that slides in a 36.04-cm-diameter cylinder. The
annular region is f
Problem 58 (15.11)
SS corkboard
Th
plastic
T1
T2
3
Tc
(a) Draw the thermal circuit for the steady-state conduction through this wall. +1
v1
R1 R2 R3
(b) Evaluate the individual thermal resistance of e
Problem 63 (16.1)
a. For steady-state, radial heat transfer, this simplifies to:
2 T 1 T
0= 2 +
r r r
or
0=
1 T
r
r r r
( )
b. Given boundary conditions: T(r = ri) = Ti and T(r = ro) = To. Let us inte
Problem 17 (3.41 White)
y
f , V f , D f
What is max
x
v0
given
F0
?
1. Choose CV (dashed line)
2. assumptions: (a) constant
, (b)
D 0=D f
(mass balance gives
v 0 =v f
), (c) steady
state
3. mass bala
Problem 27 (6.10)
Let us define our control volume using a blue box (the fluid inside the system). Let subscript A
represent the control surface at the bottom of the control volume:
The system is at s
Problem 53 (7.12 White)
Long cylinder, axial flow:
vr vx
vx v x vr vr
x
r x
r
Due to axisymmetric geometry:
v =0
=0
(a) R
(Thin boundary layer)
r=R+ y
Can also use
=
r y
If using y instead of r
v
1
Problem 33 (13.23)
Let us draw our control volume (the fluid inside the tank):
We can write a mechanical energy balance for this control volume, where subscript 1 is the top of
the tank and subscript
Chemical Engineering 150A
Spring Semester, 2011
Homework 12: Steady and Transient Conduction Problems
SOLUTIONS
c) Check Biot Number:
hV
176.5
Bi =
=
= 7 x10 4 < 1
kA 400(629.9)
Therefore, the assumpt
Problem 68 (Transient heating of a slab).
The temperature profile for transient heating of a slab of half thickness x1 initially at temperature
To and immersed at time zero into a well-stirred, infini
PS 10
48. 2G2 BSL
Fig. 2.2-3 is for understanding Eq. 2.2-19 only
3
Q
gW cos
3
Eq. 2.2-19
Solution:
(a) Kinematics,
Steady state, density constant, viscosity constant, v r =v =0, v z=f (r )
Set up a
Chemical Engineering 150A
4, 2015
May
Problem Set #15
Due Monday, May 11, 2015
271A Tan Hall by 1PM.
Look for the box in the hallway.
72. 20.6
73. 20.12
74. 22.1
75. 22.4 This problem introduces the N
Problem 72. (20.6)
At steady state:
q =hD ( T sT ) =
N uD k
D T
D
The air is stagnant. Thus, we may need to consider free convection (Grashof number):
g 4
Gr = 2 L T
v
We can use this, along with Pr (