College of Engineering and Computer Science                               

Mechanical Engineering Department

 

 

Course                 ME 375 Heat Transfer

Time:                   T Th 11:00 – 12:15

Room:                  JD1593

Instructor:           Shoeleh Di Julio

Office Hours:     T Th  12:30 – 1:30  JD 3507   

 

 

Course Description

Catalog Description:  Basic principles of heat transfer and their application.

 Introduction to conductive, convective and radiation heat transfer. 

 
Additional description: In engineering practice, an understanding of the heat transfer mechanism is becoming increasingly more important. Heat transfer plays an important role in engineering design of devices/systems such as electronic devices, vehicles, power plants, refrigerators, oven, buildings, and bridges.  The three mechanisms of heat transfer, i.e., conduction, convection, and radiation are discussed, followed by a discussion on heat exchangers and mass transfer.  Common application areas of heat transfer engineering practice such as heat transfer in residential and commercial buildings, cooling and freezing of foods and thermal control of electronic equipment are discussed if schedule allows

 

 

Course Prerequisite and Co Requisite

Prerequisite ME 370, Thermodynamics

Co requisite ME 309

 

 

Course Objective

Develop a sense of underlying physical mechanism of heat transfer and mastery of solving practical problems.  Biweekly homework assignments will be given and homework solutions will be provided to help students develop problem-solving skills.  Students understanding of the heat transfer mechanism and their problem solving skills will be evaluated by three exams  (two midterms and a cumulative final).  In addition students design approach and creativity will be evaluated by two design projects assigned.   

 

 

Text, Ref

Yunus A. Cengal, Heat Transfer, A Practical Approach, WCB/McGraw-Hill, ISBN 0-07-011505-2, 2003 3rd edition.

 

Recommended Text: Frank P. Incropera and David P. DeWitt, Introduction to Heat Transfer, 3rd edition, John Wiley &Sons, ISBN 0-471-30458-1, 1996, or the later edition.

 

 

 

Course Topics

Basic concepts of Thermodynamics and Heat Transfer               1 wk

Heat Conduction, Steady, Transient, and Numerical Methods           4 wk                                

Convection Heat Transfer, Forced and Natural                         4 wks

Radiation Heat Transfer                                                                        3 wks

Heat Exchangers (possibly)                                                                   1 wk

Review and Exams                                                                                2 wks

 

 

 

Course Assignments

Weekly Homework and Solutions are provided at www.csun.edu/~sdijulio/ME375/

Students should solve all weekly homework assignments and then refer to the solutions to gain maximum benefit.  Additional problems will be solved in class to help you master the course material.

                                                              

Two Midterms                                                                                      20% each

Two Design Team Projects                                                                   15% each

Final                                                                                                     30%

 

   

No late design projects are accepted.  There will be no make up exams.  A letter grade will be assigned based on the percentage of total possible points.  A= 90%-100%, B=80%-89%, C= 65%-79%, D= below 65% F= below 50%.  Plus and minus grading will be used.

 

 

 

 

 

Plagiarism vs. Collaboration

Students collaboration is helpful and is encouraged, however to pass the course the design projects, which are turned in, must be the individual student’s work.

 

Students who copy projects from some other sources will receive an F in the course.  Where two or more students submit nearly identical projects all students involved will receive an F in the course.

 

Identical solutions on exams, indicating copying, will result in an F in the course for both students involved.  Additional disciplinary action may be taken by the college as well.

 

Changes

Students are responsible for all the changes in the course outline

 




Class Meetings              Topics                                             Reading/Assignment    

 
   1.    Basic concept of Thermodynamic

   2.    Heat Transfer, Heat Conduction Eq overview                                                                      Ch 1

 3.    Convection and Radiation concepts overviews 

4.    1-D Heat conduction Eq, in a plane wall, a cylinder, and a sphere                    Ch 2

   5.    Example problems in 1-D Heat Conduction

   6.    Heat Generation within a solid is related to heat conduction

       and heat convection at the surface to obtain temperature

7.    Steady Heat Conduction, thermal heat resistance concept              

       in a plane wall, a cylinder and a sphere                                                                 Ch 3  

8.        Thermal Contact Resistance and Thermal Insulation

9.        Heat transfer from finned surfaces, fin efficiency, fin effectiveness,

and heat sinks

10.     Transient Heat Conduction, Lumped System Analysis (LSA), T(t) only

Dimensionless parameters Biot number and Fourier number                                           Ch 4

11.     When LSA does not apply: Transient Temperature Analysis T(x,t) for conduction

 in large plane walls, cylinders and spheres, Infinite series solution

 approximation of the 1st  term, use of temperature charts

12.    Midterm Review

13.    Mid-term Exam #1

14.     Numerical Methods in Heat Conduction with simple geometries                                    Ch 5

 and boundary conditions

Design Project #1 Due

15.     Examples of Numerical Methods in Heat Conduction, 1-D and 2-D               

16.     Fundamentals of Heat Convection, convection heat transfer coefficient,                     Ch 6

Thermal and Velocity Boundary Layers, Laminar and Turbulent Flows,

Surface Shear Stress and Drag coefficient,

17.     Dimensionless numbers, Nu, Pr

18.     External Forced Convection - Laminar and Turbulent flows over flat plates Ch 7

19.     External Forced Convection  - Flow over cylinders and spheres, Drag and Lift

20.     Internal Forced Convection – Laminar and Turbulent flows in Tubes                           Ch 8

General Thermal Analysis:

a. Constant surface Heat Flux   b.  Constant Surface Temperature

21.     Friction factor and Pressure drop in Fully Developed Flows, Hydrodynamic and thermal entry lengths, correlations for laminar and turbulent flows, surface roughness, Moody chart

22.     Natural convection, Dimensionless Numbers, Gr, Ra, Natural Convection inside

        enclosures, finned surfaces, horizontal, vertical and inclined surfaces                      Ch9

23.    Midterm Review

24.    Mid-term Exam #2

25.     Fundamentals of Radiation Heat Transfer                                                                           Ch 11

26.     View Factor                                                                                                                               Ch12

27.     Radiation HT: Black Surfaces, Diffuse and Gray Surfaces

28.     Methods of Solving Radiation Problems: a. Direct Method b.  Network Method

Design Project #2 Due

29.     Radiation shield and Radiation effects in Temp measurement

30.     Example problems of radiation heat transfer

Final Exam