Problem 1
3
(K/m)
(W/m2)
Problem 2 (1 of 2)
Problem 2 (2 of 2)
D.
.
Q/L = kS(Tz-To)
S = -ln(ro/r1)/
S should be dimensionless
Problem 3 (1 of 3)
Problem 3 (2 of 3)
Problem 3 (3 of 3)
= -(130000 K.m)/r + 8850 K
Problem 4 (1 of 2)
Problem 4 (2 of 2)
Problem
ChE 120B: Transport processes
Homework #2
Due Wednesday 1/22/2014, 2:00pm
Problem 1. W3R, Problem 17.1.
Problem 2. W3R, Problem 16.3.
Problem 3. A pressurized spherical stainless steel tank with an outer radius of 50 ft. and a wall
thickness of 6 is used
ChE 120B General Heat Transfer Equations (Set #3) Fundamental Energy Postulate
time rate of change of internal +kinetic energy + = rate of heat transfer + surface work transfer (viscous & other deformations) Electromagnetic energy or other sources
work do
ChE 120B: Transport processes, Heat Transport
Homework #3
Due Wednesday 1/27/2016, 2:00pm
Problem 1. The Alaska pipeline runs 800 miles (1280 km) from the arctic ocean to Valdez, Alaska. The
pipe itself is 48 I.D., with (1.27 cm) thick steel walls. It is
ChE 120B: Transport processes
Homework #2
Due Wednesday 1/20/2015, 2:00pm
Problem 1. W3R, Problem 17.1. (Rather than sketching the temperature profiles, plot the various cases
on the same graph in a software of your choice. Make sure to label which profil
ChE 120B: Transport processes
Homework #7
Due Friday 3/11/2016, 2:00pm
Problem 1.
W3R, Problem 21.3.
Problem 2.
W3R, Problem 21.4.
Problem 3.
W3R, Problem 21.13.
Problem 4.
You are tasked with designing a shell and tube heat exchanger to condense process
ChE 12013: Transport processes
Commonly used convective heat transfer correlations, part I
Convective heat transfer correlations are typically divided along three characteristics:
1. The type of flow encountered
2. The geometry of the surface for which h
ChE 120B: Transport processes
Homework #6
Due Friday 2/26/2014, 2:00pm
Problem 1.
A metal sphere is suspended in a flowing fluid. The Biot number is small, such that the
sphere temperature can be treated using a lumped analysis.
(a) Show, for the case of
ChE 120B: Transport processes
Homework #5
Due Friday 2/5/2014, 2:00pm
Problem 1. A lubricating oil fills the gap between a long, cylindrical rod of radius R1 which is rotating at
a rotational frequency (in rev/s), and a cylindrical sleeve of inner radius
ChE 120B: Transport Processes Heat Transfer, Winter 2015
Midterm Exam
Friday, February 6, 2015
Name: _
Grade:
Problem 1
_ / 30
Problem 2
_ / 40
Problem 3
_ / 30
TOTAL
_ / 100
Instructions: You have 55 minutes to complete this exam. The only materials you
ChE 120B: Transport processes, Heat Transport
Homework #3
Due Wednesday 1/29/2014, 2:00pm
Problem 1. The Alaska pipeline runs 800 miles (1280 km) from the arctic ocean to Valdez, Alaska. The
pipe itself is 48 inches in diameter, with (1.27 cm) thick steel
ChE 120B: Transport processes
Homework #7
Due Wednesday 3/5/2014, 2:00pm
Problem 1.
A metal sphere is suspended in a flowing fluid. The Biot number is small, such that the
sphere temperature can be treated using a lumped analysis.
(a) Show that, in the ca
5. (15 pts.) Using the denition of enthalpy you learned in your thermodynamics class
(H : U + pV) and the connection formulas for U and p that you learned in our class
derive an expression for H in terms of In Q and/or the derivatives of In Q.
H=U+pv
Usin
1. (20 pts) Show that the values ofI at the maximum of a plot of a; versus J is given by:
me : (Tilt-JR) 1;2 assume 6 = 1
Hint: Treat I as a continuous variable and solve the equation dandJ = 0 for J.
_. :3 [H3
(2.1 E F5 I '5 _ EEIJ- -%Ti
51: = (mm e
Useful Constants
electron mass
proton mass
neutron mass
atomic mass unit
Planck's constant
Boltzmann constant
Avogadros number
Electron charge
Speed of light
Universal gas constant
Useful Math Formulas
- _i ix_ ix
Slnx 21 (e e )
1( ) '
dx cosx Slnx
1
sinh
3. (20 pts.) Derive an expression for the partition function for a proton in a magnetic
eld H0. The proton has two possible energies (units of J); 51 : yH0 for the
proton aligned antiparallel to the eld and 2 = +yH0 for the proton aligned
parallel to the
ChE 120B: Transport processes
Homework #5
Due Friday 2/5/2014, 2:00pm
Problem 1.
W3R, Problem 18.3.
Problem 2.
W3R, Problem 18.6.
Problem 3.
W3R, Problem 18.19.
Problem 4.
W3R, Problem 18.22.
Problem 5.
Read W3R Section 18.3, and derive the equivalent of
Problem 1 (1 of 3)
Problem 1 (2 of 3)
Problem 1 (3 of 3)
Problem 2 (1 of 4)
a)
Problem 2 (2 of 4)
b)
Problem 2 (3 of 4)
c)
290
d)
Problem 2 (4 of 4)
e)
290
Problem 3 (1 of 2)
Problem 3 (2 of 2)
Problem 4 (1 of 2)
Problem 4 (2 of 2)
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ChE 120B: Transport Processes Heat Transfer, Winter 2015
Final Exam
4:00 7:00 PM, Monday, March 16th, 2015
Name: _
Grade:
Problem 1
_ / 60
Problem 2
_ / 20
Problem 3
_ / 40
Problem 4
_ / 80
TOTAL
_ / 200
Instructions: You have 3 hours to complete this exa
ChE 120B: Transport Processes Heat Transfer, Winter 2016
Makeup midterm Exam
Due 2:00pm Wednesday, February 24, 2016
Name: _
Grade:
Problem 1
_ / 3
Problem 2
_ / 3
Problem 3
_ / 4
TOTAL
_ / 10
Instructions: You have the option of re-doing the problems fro
Alejandro Benavides
PERM # 3271855
1. Absolutism. (1610-1879) is a monarchical form of government in which the monarch
has absolute power among his or her people.
2. Constitutionalism. Is a complex of ideas, attitudes, and pattern of behavior
elaborating