Syllabus for EGM-323

HEAT TRANSFER

# COURSE DESCRIPTION

Energy exists in several forms. In heat transfer, the focus is on heat which is the form of energy that can be transferred from one system to another as a result of temperature difference. While thermodynamics is concerned with the amount of heat transferred, heat transfer is concerned with the rate of heat transfer (heat transfer per unit time). Thermodynamics deals with equilibrium states and the amount of change from one equilibrium state to another. Heat transfer, on the other hand, deals with systems that lack thermal equilibrium, and thus it is a non-equilibrium phenomenon.

The basic requirement is that there is a temperature difference. This is the driving force for heat transfer to occur. Generally the temperature difference is specified as a temperature gradient because it includes the amount of heat that is transferred per unit time per unit length.

The three types of heat transfer are (i) conduction, (ii) convection, and (iii) radiation. Each will be examined in detail starting with steady state and transient heat conduction, followed by external and internal forced convection. Natural convection is treated separately. Radiation heat transfer does not require the presence of a material medium and it suffers no attenuation in a vacuum. The theoretical foundation for radiation heat transfer is based on electromagnetic energy emitted by matter as a result of the changes in the electronic configuration of the atoms or molecules.

Heat exchangers are equipment that generally exchange heat between two fluids that are at different temperatures while keeping them from mixing with each other. Heat transfer mechanisms usually involve convection in each fluid and conduction through the wall separating the two fluids. If the temperature of one of the conducting surfaces is high enough, radiation heat transfer may also occur (e.g., surface of a fuel pin in a nuclear reactor core that is not in contact with some coolant). We will classify numerous types of heat exchangers, each with its own characteristic overall heat transfer coefficient and logarithmic mean temperature difference (LMTD) value.

# COURSE TOPICS

• Mechanisms of Heat Transfer
• Transient Heat Conduction
• External Forced Convection
• Internal Forced Convection
• Natural Convection
• Heat Exchangers

# COURSE OBJECTIVES

After completing this course, students will be able to:

1. Solve basic heat transfer problems (conduction, convection, radiation) encountered in practice.
2. Develop thermal resistance networks to solve steady state conduction problems involving single and multi-layer rectangular, cylindrical, or spherical geometries.
3. Analyze the phenomena of transient heat conduction where the temperature distribution varies with both time and position in one- and multidimensional systems.
4. Explain the mechanism of heat transfer through a fluid in the presence of bulk fluid motion that flows over a surface (external forced convection).
5. Explain the mechanism of heat transfer through a fluid in the presence of bulk fluid motion that flows in a confined space (internal forced convection).
6. Evaluate heat transfer by natural convection for various geometries, including finned surfaces and enclosures (vertical, horizontal, inclined plates, cylinders, and spheres).
7. Calculate radiation heat transfer between ‘black’ surfaces using electromagnetic radiation principles and blackbody definitions of emissivity, absorptivity, reflectivity, and tranmissivity on spectral and total basis.
8. Perform a general energy analysis for various types of heat exchangers given that the heat exchange process involves convection between two fluids and conduction through the wall separating them.

# COURSE MATERIALS

You will need the following materials to do the work of the course. The required textbook is available from the University's textbook supplier, MBS Direct, at: http://bookstore.mbsdirect.net/tesu.htm.

### Required Textbook

• Cengel, Y. A., Turner, R. H., & Cimbala, J. M. (2012). Fundamentals of Thermal-Fluid Sciences with Student Resource DVD, 4th Edition. New York, NY: McGraw-Hill.

ISBN-13-9780077422400

Note:  This course will cover Part III of this book.  This book is also used in EGM-221:Thermodynamics and EGM-330:  Fluid Mechanics courses.

# COURSE STRUCTURE

Heat Transfer is a three-credit online course, consisting of seven modules. Modules include an overview, topics, study materials, and activities. Module titles are listed below.

• Module 1:  Heat Transfer Mechanisms

Course objectives covered in this module include objective 1.

• Module 2:  Steady Heat Conduction

Course objectives covered in this module include objectives 1 and 2.

• Module 3:  Transient Heat Conduction

Course objectives covered in this module include objectives 1 and 3.

• Module 4:  Forced Convection

Course objectives covered in this module include objective 1, 4, and 5.

• Module 5:  Natural Convection

Course objectives covered in this module include objective 1 and 6.

• Module 6:  Radiation Heat Transfer

Course objectives covered in this module include objectives 1 and 7.

• Module 7: Heat Exchangers

Course objectives covered in this module include objectives 1 and 8.

# ASSESSMENT METHODS

For your formal work in the course, you are required to participate in online discussion forums, complete written assignments, take module quizzes, and complete a final project. See below for more details.

Consult the Course Calendar for assignment due dates.

## Discussion Forums

You are required to complete seven discussion forum assignments. Discussion forums are on a variety of topics associated with the course modules.

For posting guidelines and help with discussion forums, please see the Student Handbook located within the General Information page of the course Web site.

## Application Exercises

You are required to complete seven application exercises. The assignments are on a variety of topics associated with the course modules.

For help regarding preparing and submitting assignments, see the Student Handbook located within the General Information page of the course Web site.

## Final Project/Paper

This course requires each student to complete a final paper.  The paper will be your opportunity to demonstrate that you have the ability to transfer and utilize knowledge learned throughout this course.

Requirements:  8-10 pages, double-spaced 12 pt. Times New Roman font, using APA or MLA citation protocols

For help regarding preparing and submitting assignments, see the Student Handbook  located within the General Information page of the course Web site.

• Online discussions (7)—50 percent
• Application Exercises (7)—20 percent
• Final Project—30 percent
• Outline—5%
• Final Paper—25%

 A = 93–100 C+ = 78–79 A– = 90–92 C = 73–77 B+ = 88–89 C– = 70–72 B = 83–87 D = 60–69 B– = 80–82 F = Below 60

To receive credit for the course, you must earn a letter grade of C or better (for an area of study course) or D or better (for a course not in your area of study), based on the weighted average of all assigned course work (e.g., exams, assignments, discussion postings, etc.).

# STRATEGIES FOR SUCCESS

### First Steps to Success

To succeed in this course, take the following first steps:

• Read carefully the entire Syllabus, making sure that all aspects of the course are clear to you and that you have all the materials required for the course.

• Take the time to read the entire Online Student Handbook. The Handbook answers many questions about how to proceed through the course and how to get the most from your educational experience at Thomas Edison State University.

• Familiarize yourself with the learning management systems environment—how to navigate it and what the various course areas contain. If you know what to expect as you navigate the course, you can better pace yourself and complete the work on time.

• If you are not familiar with Web-based learning be sure to review the processes for posting responses online and submitting assignments before class begins.

### Study Tips

Consider the following study tips for success:

• To stay on track throughout the course, begin each week by consulting the Course Calendar. The Calendar provides an overview of the course and indicates due dates for submitting assignments, posting discussions, and scheduling and taking examinations.

• Check Announcements regularly for new course information.

Thomas Edison State University is committed to maintaining academic quality, excellence, and honesty. The University expects all members of its community to share the commitment to academic integrity, an essential component of a quality academic experience.

Students at Thomas Edison State University are expected to exhibit the highest level of academic citizenship. In particular, students are expected to read and follow all policies, procedures, and program information guidelines contained in publications; pursue their learning goals with honesty and integrity; demonstrate that they are progressing satisfactorily and in a timely fashion by meeting course deadlines and following outlined procedures; observe a code of mutual respect in dealing with mentors, staff, and other students; behave in a manner consistent with the standards and codes of the profession in which they are practicing; keep official records updated regarding changes in name, address, telephone number, or e-mail address; and meet financial obligations in a timely manner. Students not practicing good academic citizenship may be subject to disciplinary action including suspension, dismissal, or financial holds on records.

All members of the University community are responsible for reviewing the Academic Code of Conduct Policy in the University Catalog and online at www.tesu.edu.

Thomas Edison State University expects all of its students to approach their education with academic integrity—the pursuit of scholarly activity free from fraud and deception. All mentors and administrative staff members at the University insist on strict standards of academic honesty in all courses. Academic dishonesty undermines this objective. Academic dishonesty can take the following forms:

• Cheating
• Submitting credentials that are false or altered in any way
• Plagiarizing (including copying and pasting from the Internet without using quotation marks and without acknowledging sources)
• Forgery, fabricating information or citations, or falsifying documents
• Submitting the work of another person in whole or in part as your own (including work obtained through document sharing sites, tutoring schools, term paper companies, or other sources)
• Submitting your own previously used assignments without prior permission from the mentor
• Facilitating acts of dishonesty by others (including making tests, papers, and other course assignments available to other students, either directly or through document sharing sites, tutoring schools, term paper companies, or other sources)
• Tampering with the academic work of other students

### Plagiarism

Thomas Edison State University is committed to helping students understand the seriousness of plagiarism, which is defined as using the work and ideas of others without proper citation. The University takes a strong stance against plagiarism, and students found to be plagiarizing are subject to discipline under the academic code of conduct policy.

If you copy phrases, sentences, paragraphs, or whole documents word-for-word—or if you paraphrase by changing a word here and there—without identifying the author, or without identifying it as a direct quote, then you are plagiarizing. Please keep in mind that this type of identification applies to Internet sources as well as to print-based sources. Copying and pasting from the Internet, without using quotation marks and without acknowledging sources, constitutes plagiarism. (For information about how to cite Internet sources, see Online Student Handbook > Academic Standards > “Citing Sources.”)

Accidentally copying the words and ideas of another writer does not excuse the charge of plagiarism. It is easy to jot down notes and ideas from many sources and then write your own paper without knowing which words are your own and which are someone else’s. It is more difficult to keep track of each and every source. However, the conscientious writer who wishes to avoid plagiarizing never fails to keep careful track of sources.

Always be aware that if you write without acknowledging the sources of your ideas, you run the risk of being charged with plagiarism.

Clearly, plagiarism, no matter the degree of intent to deceive, defeats the purpose of education. If you plagiarize deliberately, you are not educating yourself, and you are wasting your time on courses meant to improve your skills. If you plagiarize through carelessness, you are deceiving yourself.

For examples of unintentional plagiarism, advice on when to quote and when to paraphrase, and information about writing assistance and originality report checking, click the links provided below.

Examples of Unintentional Plagiarism

When to Quote and When to Paraphrase

Writing Assistance at Smarthinking

Originality Report Checking at Turnitin

### Disciplinary Process for Plagiarism

Acts of both intentional and unintentional plagiarism violate the Academic Code of Conduct.

If an incident of plagiarism is an isolated minor oversight or an obvious result of ignorance of proper citation requirements, the mentor may handle the matter as a learning exercise. Appropriate consequences may include the completion of tutorials, assignment rewrites, or any other reasonable learning tool in addition to a lower grade for the assignment or course. The mentor will notify the student and appropriate dean of the consequence by e-mail.

If the plagiarism appears intentional and/or is more than an isolated incident, the mentor will refer the matter to the appropriate dean, who will gather information about the violation(s) from the mentor and student, as necessary. The dean will review the matter and notify the student in writing of the specifics of the charge and the sanction to be imposed.

Possible sanctions include:

• Lower or failing grade for an assignment
• Lower or failing grade for the course
• Rescinding credits
• Rescinding certificates or degrees
• Recording academic sanctions on the transcript
• Suspension from the University
• Dismissal from the University