Example Problem
Problem 2.32
A plane wall of thickness 2L=40 mm and thermal conductivity k=5 W/m-K
experiences uniform volumetric heat generation at a rate qdot, while convection
heat transfer occurs at both of its surfaces (x=-L, +L), each of which is ex
Lab 1: Linear Heat Conduction
by
Ross Albert
Ted Angus
Colton Kennedy
Bolun Li
Zihao Zhao
Lab Section 15
Heat Transfer Laboratory
1120 Black Engineering
Iowa State University
September 20, 2012
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_
_
_
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1
Abstract
A laboratory study was conducted to expl
Quiz 9
ME 436, Mar 30, 2011
1) (25 points) A steel strip emerges from the hot roll section of a steel mill at a speed of 20 m/s and a
temperature of 1200K. Its length and thickness are L=100m and 6 = 0.003m. Its density and specific heat
are 7900 Kg/m3, a
Heat Transfer: Lecture 7
Thermal Resistance
1D Steady Conduction in a Cylinder
Professor Shankar Subramaniam
Last Lecture
1.
2.
3.
4.
Steady conduction with heat generation in a plane wall
Steady conduction without heat generation in a plane wall
Thermal
Autonomous Navigation System
Alan Bentley
Clarence Boright
Chen Wen
Allison White
Zihao Terry Zhao
Agenda
Project Objective
Background
Customer Requirements
Solution Building
Final Design
Testing and Results
Design Challenges
Recommendations and Future Wo
Procedure
Two eight feet log copper tubes were wrapped in a thermal were tape that was
hooked up to 120V AC power. A power analyzer was used to monitor the electrical power
supplied to the tape. The copper pipe had an inner diameter of .785 inches. The tu
Laminar flow iterations for the solution
Temperature Distribution for Laminar flow
Laminar flow XY plot
Temperature Distribution for Turbulent flow
Ts for Turbulent Flow
Tm for Turbulent Flow
1. Which setting (laminar or turbulent calculation) is the corr
Nomenclature
Density
kg/
Volume flow
Q
Mass flow
Kinematic Viscosity v
m^2/s
Thermal Conductivity
k
W/m*K
Convection
h
W/m*K
Prandtl Number
Pr
Air Velocity
v
m/s
K
Ave Temp
Diameter
d
m
Length
L
m
Data and Calculation:
For Unit 1
The data we got from the
LAB 2: Extended Surface Heat Transfer
by
Ross Albert
Ted Angus
Colton Kennedy
Bolun Li
Zihao Zhao
Lab Section 15
Heat Transfer Laboratory
1120 Black Engineering
Iowa State University
October 5, 2012
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1
Abstract
An experiment was conducted to test
Procedure
Prior to the lab, the group collaborated on the development of a spreadsheet that would
relate the fin parameters of a cylindrical fin at steady state to the readings of nine
thermocouples spaced equally along its length. The spreadsheet was dup
ANNOUNCEMENTS
1. Please complete the homework survey by Friday (today)
2. Exam 1 is being moved from Wed Sep 26th to Friday Sep
28th (Career Fair, request from students)
3. There will be a design project that will count for 5% of the
grade, with final exa
Thermal Conductivity Error Analysis
Thermal conductivity calculation
As discussed in the pre-lab video, the calculation of the thermal conductivity for the test
specimen is computed using linear regression of temperature data in the heater section, linear
Heat Transfer: Lecture 9
Radial Conduction Problems,
Steady Conduction with Heat Generation,
Heat Transfer from Extended Surfaces
Professor Shankar Subramaniam
Last Lecture
1. Application Problem of Steady Heat Conduction in a Sphere
Todays Lecture
s
s
s
Heat Transfer: Lecture 3
Radiation and Energy Balance
Professor Shankar Subramaniam
Last Lecture
1. Problem 1.11 (contd.)
2. Convection: Newtons Law of Cooling
Todays Lecture
1.
2.
3.
4.
5.
6.
7.
Radiation
Conservation of Energy
Surface Energy Balance
Ene
Heat Transfer: Lecture 5
Heat Diffusion Equation and Boundary
Conditions
1D Steady Conduction in a Plane Wall
Professor Shankar Subramaniam
Last Lecture
1. Heat Diffusion Equation
for an incompressible
liquid
Heat Diffusion Equation
s
s
Energy Conservatio
Heat Transfer: Lecture 13
Transient Conduction, Lumped Capacitance
Professor Shankar Subramaniam
Announcements
1. Exam I is on Friday, Sep 28th in class on Chaps. 1-5
2. Please bring a calculator, writing materials and stapler.
Last Lecture
1. Transient C
Nomenclature
Q
k
T
x
T
A
x
kB
ks
(dT/dx)B
dT/dx)s
q
Rate of heat transfer [W]
Thermal conductivity [W/m K]
Temperature [C]
Distance [m]
Temperature difference [C]
Area [m^2]
Plane thickness [mm]
Thermal conductivity of brass [W/m K]
Thermal conductivity o
Title of Experiment
by
Person A
Person B
Person C
etc.
Lab Section _
Lab Station _
Heat Transfer Laboratory
1120 Black Engineering
Iowa State University
Month, Day, Year
_
_
_
_
_
(Team Member Signatures)
Abstract
The Abstract is a concise summary of the
Nomenclature
Q
k
T
x
T
A
x
kB
ks
(dT/dx)B
dT/dx)s
q
Rate of heat transfer [W]
Thermal conductivity [W/m K]
Temperature [C]
Distance [m]
Temperature difference [C]
Area [m^2]
Plane thickness [mm]
Thermal conductivity of brass [W/m K]
Thermal conductivity o
Slop(dT/dx)
Temperature
location
position
Brass
T1(mm)
T2(mm)
T3(mm)
T4(mm)
T5(mm)
T6(mm)
T7(mm)
T8(mm)
V
(Volt)
I
(Amp)
q
(Watts)
Diameter of
brass section
and test
specimen(mm)
Area(m^2)
q" Heat flux of
brass heated
section
(Watts/m^2)
q" Heat flux of
b