ME 436, February 3, 2016 Quiz 3 Name: RV‘FN/Qf KQ/j
This quiz is closed notes, open book. You may use calculators. Total time is 20 minutes. Note
that bonus questions are optional.
Grade:
1) A biofuel reactor features a 150 cm thick ceramic plane wall (k
Chapter 3 Part 2:
Conduction with Energy Generation
ME 436 Chapter 3,
Slide 1
Conduction with Energy Generation
Assume (Ts,1 and Ts,2 given):
Energy equation:q
!
Ts,1
T , 2 h2
Integrate once:
T ,1 h1
Integrate again:
Ts,2
-L
L
x
ME 436 Chap
Name: Lab Sec#
MEV436, Feb. 7, 2014 Quiz 3
T his quiz is closed notes, open book. You may use calculators. Total time is 0 minutes.
L 1 1
._ ._ _ _. 2 2
Rt,cond " 7c: Rt,conv a Rt,rad hTA hr 500:9 + Tsur) (Ts + Tsar)
q l : ATtoml
tata Rtotal
1) (2 p
ME 436, Sept. 14, 2016 Quiz 3
Name:
This quiz is closed notes. open book. You may use calculators. Total time is 20 minutes.
I. 1
Ram = a Rtmne = E Rttad = ,7";
Wm!
(hotel = "total
1
hr = 57? + Tsar); + Tm)
1) (8 points) Temperature distributiom for 1-D c
ME 436, Dec. 2,2015 Quiz 12 Name: Sojwlviswr
This quiz is open notes, open book. You may use calculators. Total time is 20 Mates.
(1) The spectral radiation emission from a star is shown below.
(a) (4 points) Calculate the ernissive power of the star (in
ME 436, Oct 4, 2016 Quiz 6 Name: K
771i: quiz is closed notes, open book. You may use calculators. Total time is 20 m' res.
l) (6 pts) Answer the following questions as applied to transient conduction heating of an object with uniform
properties, initial
MIDTERM EXAMINATION
ME 436 Heat Transfer
October 10, 2016
8:00-8:50 AM
Sippel
Instructions: This examination is open notes, open book. You may use calculators. Total time allotted
is 50 minutes. The exam consists of four problems, each having multiple par
ME 436, Oct 26, 2016 Quiz 7 Name: K g
This quiz is closed notes. open book. You may use calculators. Total time is 20 m mes.
l) (20 pts) A thin metal sheet emerges om the hot roll section of a steel mill at a speed of 5 m/s and at the
instant shown, can b
APPENDIX
A
Thermophysical
Properties of Matter
1
Table
Page
A.1
Thermophysical Properties of Selected Metallic Solids
A.2
A.3
Thermophysical Properties of Selected Nonmetallic Solids
Thermophysical Properties of Common Materials
Structural Building Materi
m: Nov. 9.2016 Quiz9 a. Key
1111: quiz is clued notes, open book. You may use an equalion sheet and calculators. Total lime is 20 not ex.
l)ConsideramighlpMictubeusedtocoolblood.Thebulkinletlempewureis1hembehasmimermldiunetet
of25mmmda30cm Iongpieceofmemb
PROBLEM 4.55
KNOWN: Steady-state temperatures (K) at three nodes of a long rectangular bar.
FIND: (a) Temperatures at remaining nodes and (b) heat transfer per unit length from the bar using
nodal temperatures; compare with result calculated using knowled
PROBLEM 3.84 (Cont.)
T ( L B ) = T1 =
&
qB
2k B
T ( + L B ) = T2 =
&
qB
2k B
( L B )2 C1L B + C2
where T1 = 261C
(4)
( + L B )2 + C1L B + C2
where T2 = 211C
(5)
where q1 = 107,273 W/m2
(6)
&
q
q ( L B ) = q1 = k B B ( L B ) + C1
x
kB
&
Using IHT to s
Parameter
Pin Diameter (m)
Pin Length (m)
Number of fins x
Number of fins y
Number of fins total
Length of base x (m)
Length of base y (m)
L/d Ratio
Volume of Fins
Mass of fins
h
eta_o
A_t
A_f
A_b
q_t
eta_f
q_f
M
m
P
A_c
k
T_b
T_infinity
Theta_b
sinh(mL)
ME 436 Take Home Quiz 4: Cooling System Design Problem
Scenario:Asheatloadscontinuetoescalateinelectronic
equipment,designersseekoutmorepowerfulheatsinks
to cool their electronic devices. In many instances,
designers are turning to pin fin heat sinks, whi
Parameter
w
L
Number of fins x
Number of fins y
N
b1
b2
h
eta_o
A_t
A_f
A_b
q_t
eta_f
q_f
M
m
P
A_c
k
T_b
T_infinity
Theta_b
sinh(mL)
h/mk
cosh(mL)
epsilon_f
Volume
q'_f
Checks
A
B
Design A
Design B
Aluminum
Aluminum
0.003
0.001
0.03
0.007
6
14
9
17
54
23
ME 436, Sept. 21, 2016 Quiz 4 Name: Sim/57% .
This quiz is closed notes. open book. You may use calculators. Total time is 20 minutes.
l) A bms rod (=03 W/m/K) of mo mm long and 5 mm in diameter extends horizontally from a casting held at 200
C te
ME 436, Sept 28., 2016 Quiz 5 Name: 2:6 z
1711: quiz is closed notes, open book. You may use calculators. T oral time i 20 minutes.
1) Lasers oen have low efciencies, generate signicant heat, and require active cooling strategies for operation.
A 4 x arra
ME 436, 0a. 31. 2016 Quiz 3 Name: 25 lz i I,
This quiz is closed notes. open book. You may use calculators. T our! time is 20 minutes.
I) Gorilla Glass 7" is a manufactured by Coming and is used by other companies (Apple, Samsung, HTC, Microsoft)
to make
FINAL EXAMINATION
ME 436 - Heat Transfer
May 5, 2014
7:30-9:30 AM
Gillman Rm 1352
Instructions: This examination is closed notes, open book. You may use calculators. Total time allotted
is two hours. Theexam consists of four problems, each having multiple
MIDTERM EXAMINATION
ME 436 -A ~ Heat Transfer
October 9, 2015
8:00-8:50 AM
Sippel
Instructions: This examination is open notes, open book. You may use calculators. Total time allotted
is 50 minutes. The exam consists of four problems, each having multiple
ME 436, Oct 4, 2016 Quiz 6 Name: ;
This quiz is closed notes, open book. You may use calculators. Total time is 20 mi utes.
1) (6 pts) Answer the following questions as applied to transient conduction heating of an object with uniform
properties, initiall
Lab Sec#
ME 436, Mar. 7, 2014 Quiz7 Name:
This quiz is closed notes, open book. You may use calculators. Total lime is 20 minutes.
1) (2 points) In general the species, hydrodynamic, and thermal boundary layers are all the same thickness. Circle
your ans
ME 436, Feb. 10, 2014 Quiz 4 Name: . . Lab Sec#
This quiz is closed notes, open book. You may use calculators. Total time is :0 minutes.
Cartesian Coord. Sys
L 1 1
_. _ _. _ 2 2
Rt,cond " a Rt conv 7171' trad " hrA hr EUCTS + Tsur)(Ts + Tsur)
_ ATtotal
ME324: Manufacturing Engineering
Summer 2017
Lecture 02
(revised)
Material Removal Processes:
Machining
Text: Kalpakjian: 8.1 ~ 8.2
Lecture #02-04
Material Removal Processes:
Machining
Learning Objectives
What is the chip formation mechanism?
Can you de
ME324: Manufacturing Engineering
Summer 2017
Mon Fri 7:30 8:50am
1077 Black
Instructor: Jim Heise
Lecture #1
Outline
Syllabus and schedule
Definition of manufacturing
US Manufacturing history
Sequential vs. concurrent engineering
Engineering material
ME324: Manufacturing Engineering
Summer 2017
Lecture 02
Material Removal Processes:
Machining
Text: Kalpakjian: 8.1 ~ 8.2
Lecture #02-04
Material Removal Processes:
Machining
Learning Objectives
What is the chip formation mechanism?
Can you describe mac