PROBLEM 6.14.FAM
GIVEN:
A bottle containing a cold beverage is awaiting consumption. During this period, the bottle can be placed
vertically or horizontally, as shown in Figure Pr.6.14. Assume that the bottle can be treated as a cylinder of
diameter D and
ME 335 Exam II Review
Radiation and Convection
General Approach
dT
Q cp
S
dt
1. Read the problem statement.
2. Draw resistance diagram.
3a. If transient (look for keywords: initial, time, dT/dt, etc.), use solutions in the
book (radiation: 4.82, convect
Week 7 (10/25/2012)
Example 1. Given: Cube with side a, Surface 1 top surface, Surface 2 4 side surfaces, and Surface 3
bottom surface
Objective: Calculate the view factors F2-1 and F2-2.
Solution:
From the summation rule (4.33), F1-1 + F1-2 + F1-3 = 1.
PROBLEM 6.14.FAM
GIVEN:
A bottle containing a cold beverage is awaiting consumption. During this period, the bottle can be placed
vertically or horizontally, as shown in Figure Pr.6.14. Assume that the bottle can be treated as a cylinder of
diameter D and
PROBLEM 6.7.FAM
GIVEN:
During part of the year, the automobile windshield window is kept at a temperature signicantly dierent
than that of the ambient air. Assuming that the ow and heat transfer over the windshield can be approximated
as those for paralle
Heat Transfer Final Exam Review
Conduction
Radiation
Semi-Bounded Convection
Bounded Convection
Test Overview
Two hours
Three sheets of notes
Four questions (40% of final grade)
Five Chapters:
2 (Energy Equation and S-dots)
3 (Conduction)
4 (Radiation)
6
ME 335 (HEAT TRANSFER), FALL 2014, EXAM II
OPEN BOOK, 2 SHEETS OF HAND WRITTEN NOTES
Department of Mechanical Engineering, University of Michigan
Name:
Pledge:
PROBLEM 1 (30%)
Consider surface-radiation cooling of a oxidized brass sphere of diameter D1 wi
ME 335 (HEAT TRANSFER), WINTER 2014, EXAM II
OPEN BOOK, 2 SHEETS OF HAND WRITTEN NOTES
Department of Mechanical Engineering, University of Michigan
PROBLEM 1 (33%)
GIVEN:
A disk of diameter D is electrically (Joule) heated at a rate of Se,J and its radiat
ME 335 (HEAT TRANSFER), WINTER 2014, FINAL EXAM
OPEN BOOK, 2 SHEETS OF HAND WRITTEN NOTES, AND NOTHING ELSE
Department of Mechanical Engineering, University of Michigan
Name:
Pledge:
PROBLEM 1 (25%)
A thermoelectric cooler having N pair of p n elements is
ME 335 (HEAT TRANSFER), FALL 2014, EXAM I SOLUTIONS
Problem 1. (33 points) Animal fur grows in winter and polar bears are most ecient with their dense
fur thermal insulation. Model polar bear as a cylinder, as shown in Figure Pr. 1. The internal body has
PROBLEM 3.50.FAM
GIVEN:
During solidication, as in casting, the melt may locally drop to temperatures below the solidication temperature Tls , before the phase change occurs. Then the melt is in a metastable state (called supercooled liquid)
and the nucle
Exam I
T
+s
t
T
Q | A = c pV
+S
t
2 (kT ) = c p
Energy Equation (2.9)
T
=0
t
Steady State
Q |
A
T
0
t
=S
Transient
Its all in the resistances:
Q=
T
,
R
q=
T
AR
Determined by geometry: (Table 3.2)
l
e.g.
R=
kA
Contact Resistances (3.96)
Rk , c = const.
[
How to Read a Micrometer
The Millimeter Micrometer
This is a millimeter micrometer.
The numbers on the stationary
cylinder with vertical hashmarks
represent millimeters.
The numbers on the rotating barrel
with with horizontal hashmarks
represent 0.01 mill
HOMEWORK #1, ME 395 FALL 2016
Due in class on Friday, September 16, 2015
Name
_
Section
_
The density of brass used to make a hollow cylindrical tube is 8500 140 kg/m3. A team
of students determines its (brass) volume using a ruler that has a resolution e
ME395
Student Guide
1 Pressure Measurement Student
Guide
The following document provides the ME395 student with a fundamental procedure
for conducting the pressure measurement experiment. The students should consider
issues with the test set-up and the ef
ME 360: Modeling, Analysis and Control of Dynamic Systems
Professors Stein
University of Michigan, Fall 2016
Homework #3
Assigned: Thurs. Sept. 15, 2016
Due: Thurs. Sept. 22, 2016
Students may work together on the homework assignments, but individually pr
ME 360: Modeling, Analysis and Control of Dynamic Systems
Professors Stein
University of Michigan, Fall 2016
Recitation #1
Assigned: Fri. Sept. 16, 2016
Due: Wed. Sept. 21, 2016
1. Problem 2.7, page 109
2. Problem 2.19
3. Look up the tutorial to find out
Name _
ME395 Homework 2 (Lab 2)
This homework will look at calculation of frequency error in two different ways, using a portion of your
data from the weeks lab. This worksheet should help you in your analysis for the lab report. Because
data will vary am
ME 395 Fall 2016
September 6, 2016
Introduction
ME 395 involves experimentation and uncertainty, report writing, and student teamwork. Success in ME 395 requires planning and coordination. To facilitate course organization, information has been posted on
Fall 2016
HW#1
ME 433/AUTO533
Advanced Energy Solutions
Homework Set #1
Fall 2016 - Sections 001, 002 and 881
50 points (2 points each unless noted otherwise)
Problem 1 (4 points) 1a) How long would you need to run on the treadmills to expend
ME395
Force Measurement - Student Guide
Force Measurement Student Guide
1.1. Procedure
The following is a general procedure for this experiment a basic
guideline. Please consult the class procedure for specific instructions
on executing this experiment.
G
PROBLEM 4.23.FAM
GIVEN:
A at radiation heater is placed along a vertical wall to heat the passing pedestrians who may stop temporarily and
face the heater. The heater is shown in Figure Pr.4.23(i) and is geometrically similar to a full-size mirror. The he