The assignment for week 6 has changed.  We will only cover Chapter 8, and two problems for that chapter were added related to Monday's Lecture. 

Jester Purtteman (jesterp@u.washington.edu) is the teaching assistant for the course. Office hours are 8:30-9:20 M, Th 1:00-2:00 & F 3:30-4:30 MEB 236, the TA Conference Room near the North end of the 2nd floor in Mechanical Engineering.  If you would like to see changes in out-of-class hours and there is enough interest, let us know. 

This course is the study of heat transfer by conduction, convection and radiation. The prerequisite is either M E 333 or CEE 342. The Course will cover all the topics in Introduction to Heat Transfer by F.P. Incropera and D.P. DeWitt, 4th Ed.,  with varying degrees of depth consistent with a one academic quarter.

In practical terms the course objectives are for you to be able to:

1) Calculate heat transfer rates and temperature distributions for steady-state heat conduction (one- and two-dimensions), basic transient problems (lumped, one-dimensional, and multi-dimensional), and fins.

2) Solve for convective heat transfer rates involving internal and external configurations, under forced and natural flows using semi-empirical correlations.

3) Calculate the heat transfer performance of simple heat exchanger configurations.

4) Explain the way in which surface properties (temperature & emissivity) can be used to quantitatively determine the nature of surface radiation (dependence of energy emission on wavelength, dependence of total energy emission on temperature, amount of incident radiation that is absorbed vs. reflected).

5) Find the rate of heat transfer between gray surfaces positioned arbitrarily in space. Synthesize these fundamental relations into models of heat transfer between multiple surfaces and within enclosures.

6) Synthesize the three fundamental modes of heat transfer (conduction, convection, radiation) into realistic multimode models which can be used to characterize heat transfer in practical situations.

To accomplish the above goals, we will cover the following detailed topics:

Thermal properties
Conduction rate equation
Steady-state heat diffusion in one dimension
Conduction with thermal energy generation
Heat transfer from extended surfaces
Steady-state heat diffusion in two dimensions
Lumped capacitance method
Spatial effects in transient conduction
Convection transfer equations
Forced external flow convection
Forced internal flow convection
Natural convection
Boiling
Heat exchanger analysis
Surface emission, absorption, reflection, transmission
Blackbody radiation
View factors
Blackbody radiation exchange
Gray body radiation exchange
Multimode heat transfer

Knowledge of heat transfer will not only give you more valuable tools in your engineering toolbox, but it will give you an appreciation for many interesting aspects of life you may have never thought about before entering the class. For example, why adding additional insulation around an insulated hot water pipe may defeat the purpose, why an ``air'' thermometer does not measure the temperature of the air, why cooking utensils are made out of various materials, that our bodies normally generate about the same heat as a 100 Watt light bulb, what the calorie content of listed on the label of a candy bar means, why a steel block feels colder than a cork block when both are the same temperature, why we may be comfortable to sit in a room at 70 degrees F, but get cold pretty soon in water of the same temperature, why wood burning stoves are never shiny chrome, and why the best double pane "insulating'' windows do not have the thickest air space.

There will be three exams during the course,  October 22, November 19 and December 13 (the final exam). The exams will be open textbook along with one, two then three 8.5x11 inch crib sheets (one side only) for the three exams. The use of crib sheets should 1) Assist you  in reviewing the material, 2)  Be a summary your approach to problem solving and  3) to minimize use of the text during the exam except for physical data (saves time!).  To be fair to your classmates, there will be no make-up exams other than documented medical issues or personal emergencies.

Course grades will be based on three exams 60% (20%,20%,20%), homework 20%, project(s) 15% and 5% for effort. A simple straight-line algorithm will be used to assign course grades based on the percentage of possible points earned.  On a plot of grade versus percent the line goes between (40%,0.7) and (90%, 4.0).  Obviously "only" 90% is required to earn 4.0.  On the other hand, 40% is required to pass.  This should never be a problem as long as all components of the class are completed, including homework and projects.  An exception to the above algorithm will be made for anyone who achieves 90% on all three exams, in which case a 4.0 will be awarded regardless of other scores.

Send messages to the class by using the e-mail address me331aa_au04@u.washington.edu.

The enrolled students and course instructors listed in the Time Schedule are automatically made subscribers using UW addresses. The list of subscribers is updated nightly to reflect changes in course enrollment.

Feel free to contact classmates for help with homework problems or other issues. I will use it as needed too, and assume you check e-mail regularly.  As the volume of  e-mail continues to grow, I am tending to use this feature more sparingly.  Thus, it is a good idea to check the class website regularly to see if there are any Announcements on the homepage and check out the Notes & Supplemental Material page.

You may give us anonymous feedback on the course via e-mail, or if you would like a response, just include your name and e-mail address on the form. Thanks!