Catalog description: Credits: 4; Prereq: MAP 2302 or EGM 3311; Coreq: CGS 2425 or equivalent.
Transfer phenomena, steady and unsteady state heat conduction, radiation, free and forced
convection, mass transfer, psychrometrics, thermodynamics of biological processes.
I. OBJECTIVES:
The purpose of this course is to procvide students with a basic
understanding of heat and mass transfer, theory of refrigeration,
and psychrometrics. Upon successful completion of this course,
the student should be capable of analyzing heat and mass transfer
processes and making design calculations for many agricultural
and biological applications.
II. COURSE FORMAT: The course will consist of 3 lectures and 1 laboratory
per week, problem sets, quizzes and examinations.
III. FREQUENCY: Fall Semester
IV. GRADING SYSTEM: (Minimum passing percentage 65%)
Final Exam 20%
Two Examinations 40%
Problem Sets* 20%
Lab Reports* 10%
Quizzes 10%
A: 90-100, B: 80-89, C: 70-79, D: 60-69, E: <60
V. TEXTBOOK:
Required Text: Cengel, Y.A., Heat Transfer, A Practical Approach,
2nd Ed. McGraw-Hill. N.Y. 932 pp. 2003.
VI. CONTENTS OF COURSE:
a. Basic Concepts of Thermodynamics and Heat Transfer
1. Thermodynamics and heat transfer
2. Engineering heat transfer
3. Heat and other forms of energy
4. The first law of thermodynamics
5. Heat transfer mechanisms
6. Simultaneous heat transfer mechanisms
b. Heat Conduction Equation
1. Introduction
2. One-dimension heat conduction equation
3. General heat conduction equation
4. Boundary and initial conditions
5. Solution steady one-dimensional heat conduction
6. Heat generation in a solid
7. Variable thermal conductivity
c. Steady Heat Conduction
1. Steady heat conduction in plane walls
2. Thermal contact resistance
3. Generalized thermal resistance networks
4. Heat conduction in cylinders and spheres
5. Critical radius of insulation
6. Thermal insulation
7. Transfer in common configurations
d. Transient Heat Conduction
1. Lumped system analysis
2. Transient heat conduction in large plane walls, long cylinders,
and spheres.
3. Transient heat conduction in semi-infinite solids
4. Transient heat conduction in multidimensional systems
e. Numerical Methods in Heat Conduction
1. Why numerical methods?
2. Finite difference formulation of differential equations
3. One-dimensional steady heat conduction
4. Two-dimensional steady heat conduction
5. Transient heat conduction
6. Controlling the numerical error
f. Forced Convection
1. Physical mechanism of forced-convection
2. Velocity boundary layer
3. Thermal boundary layer
4. Flow over flat plates
5. Flow across cylinders and spheres
6. Flow in tubes
g. Natural convection
1. Physical mechanisms of natural convection
2. Natural convection over surfaces
3. Natural convection inside enclosures
4. Natural convection from finned surfaces
5. Combined natural and forced convection
h. Radiation Heat Transfer
1. Introduction
2. Thermal radiation
3. Blackbody radiation
4. Radiation properties
5. Atmospheric and solar radiation
6. The view factor
7. Radiation heat transfer: black surfaces, diffuse, gray surfaces
8. Radiation shields and the radiation effect
i. Heat Exchangers
1. Types of heat exchangers
2. The over-all heat transfer coefficient
3. Analysis of heat exchangers
4. The log-mean temperature difference method
5. The effectiveness-NTU method
6. Selection of heat exchangers
j. Mass transfer
1. Introduction
2. Analogy between heat and mass transfer
3. Mass diffusion
4. Boundaty conditions
5. Staedy mass diffusion through a wall
6. Water vapor migration in buildings
7. Transient mass diffusion
8. Diffusion in a moving medium
9. Mass convection
10. Simultaneous heat and mass transfer
k. Psychrometrics
1. Ideal gas laws
2. Definition of psychrometric terms
3. The psychrometric chart
l. Principles of Refrigeration
1. Vapor compression refrigeration cycle
2. P-h charts
3. Refrigerants
4. Components of refrigeration systems
5. Accessory equipment
6. Absorption refrigeration
*All assigned problems and lab reports must be submitted on the date
specified for full credit. The course will not have been completed
until all assignments are accepted by the instructor. Tests and
quizzes cannot be made up unless prior arrangements are made with
the instructor. You must be present during lab exercise in order to
receive credit for lab reports.
Instructor : Khe V. Chau, Office: 287 Rogers Hall, Phone: 392 1864 EXT 287
Academic Dishonesty:
As a result of completing the registration form at the University
of Florida, every student has signed the following statement:
"I understand that the University of Florida expects its students to be
honest in all their academic work. I agree to adhere to this commitment
to academic honesty and understand that my failure to comply with this
commitment may result in disciplinary action up to and including
expulsion from the University.
UF Counseling Services:
Resources are available on-campus for students having personal
problems or lacking clear career and academic goals which interfere with
their academic performance. These resources include:
1. University Counseling Center, 301 Peabody Hall, 392-1575, personal
and career counseling;
2. Student Mental Health, Student Health Care Center, 392-1171,
personal counseling;
3. Sexual Assault Recovery Services (SARS), Student Health Care Center,
392-1161, sexual assault counseling; and
4. Career Resource Center, Reitz Union, 392-1601, career development
assistance and counseling.
Use of Library, Personal References, PC Programs and Electronic Data Bases
These items are university property and should be utilized with other users in mind.
Never remove, mark, modify nor deface resources that do not belong to you. If you’re in
the habit of underlining text, do so only on your personal copy. It is inconsiderate,
costly to others, and dishonest to use common references otherwise.
Software Use
All faculty, staff and students of the University are required and expected to obey the
laws and legal agreements governing software use. Failure to do so can lead to monetary
damages and/or criminal penalties for the individual violator. Because such violations
are also against University policies and rules, disciplinary action will be taken as
appropriate. We, the members of the University of Florida community, pledge to hold our
peers and ourselves to the highest standards of honesty and integrity.