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Thermodynamics I ENGR 251

Thermodynamics I ENGR 251. Course Introduction. Faculty of Engineering and Computer Sciences Concordia University. Lecture 0. Purpose: Introduction about this course and go through all the logistics. essential information course format evaluation scheme course topics.

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Thermodynamics I ENGR 251

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  1. Thermodynamics IENGR 251 Course Introduction Faculty of Engineering and Computer Sciences Concordia University

  2. Lecture 0 Purpose: Introduction about this course and go through all the logistics • essential information • course format • evaluation scheme • course topics

  3. Instructor: Dr. Hoi Dick Ng Room: EV 004.229 Tel: (514) 848-2424 ext 3177 E-mail: hoing@encs.concordia.ca Office Hours: Mondays 2:30pm - 4:00pm or by appointment Webpage: http://users.encs.concordia.ca/~hoing/Teaching/ENGR251/engr251.html • Contain class lecture powerpoints & supplements • Homework exercises and solutions • Last minute announcements

  4. Teaching Assistants Tutorial MA   F  16:15-17:55 H-521 Mr. Gianni Campopiano campopiano.gianni@gmail.com Mr. Jimmy-Ralph Nakhal jinakhal@hotmail.com Tutorial MB   F  16:15-17:55 FG-B070  Ms. Amy-Lee Gunter a.k.gunter@gmail.com Tutorial MC   F  11:45-13:25 H-603-1  Ms. Gaurangna Tiwari gaurangna.6814@gmail.com  Markers  Markers Mr. Khaleed Yassin ktyassine@hotmail.com

  5. Objectives • To present a comprehensive treatment of classical thermodynamics within the framework of an engineering technology curriculum The course consists in three equally important parts: • To present the fundamentals of thermodynamics, including applications of the first and second laws, enthalpy, entropy, and reversible and irreversible processes. • Lectures • Tutorials • (Quizzes) • Assignments • To train the learned concepts introduced during the lectures • Apply the learned concepts

  6. Objectives Graduate Attributes: This course covers the following graduate attributes: 1) A knowledge base for engineering Demonstrated competence in university level mathematics, natural sciences, engineering fundamentals, and specialized engineering knowledge appropriate to the program. 2) Problem analysis An ability to use appropriate knowledge and skills to identify, formulate, analyze, and solve complex engineering problems in order to reach substantiated conclusions.

  7. Motivation Why should I learn thermodynamics in engineering ? Engineering thermodynamics is the study of how energy and heat can be used to perform useful work. • Knowledge of thermodynamics is required to design any device involving the interchange between heat and work, or the conversion of material to produce heat (combustion). In order to consider yourself an Engineer, you must understand the concepts of thermodynamics and be able to apply them to real-world systems. !!!!

  8. Motivation Why should I learn thermodynamics in engineering ? why we can’t make cars that are 100% efficient? why your coffee gets cold or your beer (or soda) gets warm?

  9. Motivation Heat Why should I learn thermodynamics ? • This schematic demonstrates how the main concepts of this course are interrelated. 1st Law 2nd Law Converted heat to work Heat flows from hot to cold Quality of energy Conservation of energy Analysis of engineering systems

  10. Textbook: Y.A. Cengel and M.A. Boles, “Thermodynamics: An Engineering Approach”, 7th edition (SI), McGraw Hill. Or any other edition We will cover most of Chapters 1 through 9 of this text. You are encouraged to consult other thermodynamics textbooks (see those given in the course outlines) to see different approaches to the course concepts.

  11. Topics • Basic concepts • Definition and fundamental ideas of thermodynamics • The concept of “a system”, “a state”, “equilibrium”, “process”, etc. • Zeroth law of thermodynamics (which defined a useful property, “temperature”) • Properties of pure substances • First law concepts ( “energy conservation and interaction”) • How to determine the energy of a system • Changing the state of a system (energy exchange) with heat and work • How to perform an energy balance for a “closed” or “open” system • Second law concepts • The definition of entropy • Why heat flows from hot to cold (Quality of energy) • Why perpetual motion machines are impossible • Applications • Application of thermodynamics to heat engines; engineering cycles

  12. Grading Scheme • Three small quizzes 15%* • Midterm Test 30% (Tentatively scheduled for October 27, 2014) • Final Exam 55% * During the tutorials ** Faculty approved calculator only (Sharp EL-531 or Casio FX-300MS or equivalent) *** Must get a passing mark (50%) for the final to pass the course

  13. SHARP EL-531

  14. Some tips in solving thermodynamics problem • Write down a problem statement at the beginning (e.g., what are you looking for) and include a diagram/sketch that helps to clearly define your system and variables. • State any assumptions needed to solve the problem, justified them if necessary. • Express each step in a systematic and rigorous manner. • Use units appropriately and consistent with the problem statement • Use the correct number of significant digits • Correctly obtain data from thermodynamic tables • At the end of the question, think if your answer makes sense. (e.g., if you find 10,000C of your cup of coffee, you may want to check your steps and arithmetics. • Write your solution clearly. Learn how to effectively communicate engineering solution to your employers and customers.

  15. How to succeed in this course • Attend all lectures and tutorials • Study class lectures regularly • Do the homework (not memorize the solutions) • Discuss with your colleagues and T.A.s You are encouraged to engage in discussions regarding class topics, in class, after class. Generally if you have a question, so does someone else! Don’t be shy. Most important, ENJOY this course

  16. Don’t COPY Don’t CHEAT Don’t BE LAZY Don’t BREAK your arm Don’t PAY for any medical note Don’t MSN/ICQ or chit-chat in class Don’t FALL asleep Don’t DEFER Don’t forget you are a University student …etc Don’t forget you are an University student and a future engineer All students should become familiar with the University’s Academic Code of Conduct (see http://www.concordia.ca/students/academic-integrity/code.html)

  17. Provisional Course Schedule • Week Dates Topic Textbook • Chapters • Sept. 9 – Sept. 11 Basic concepts: temperature, and pressure 1 • 2 Sept. 16 – Sept. 18 Properties of solids and liquids 3 • 3 Sept. 23 – Sept. 25 Phase changes, equilibrium, and thermodynamic tables 3 • 4 Sept. 30 – Oct. 2 Ideal gas law and thermodynamic properties 3 • 5 Oct. 7 – Oct. 9 Energy transfer by heat and work 2, 4 • 6 Oct. 16 Midterm • 7 Oct. 21 – Oct. 23 First Law analysis of closed systems 4 • 8 Oct. 28. – Oct. 30 First Law analysis of open systems 5 • 9 Nov. 4 – Nov. 6 Gas power cycles (converting heat to work) & engines 9 • 10 Nov. 11 – Nov. 13 Engines (planes, trains, and automobiles) 9 • 11 Nov. 18 – Nov. 20 Heat engines (maximizing efficiency) 9&6 • 12 Mechanical energy and the First Law • 13 Mar. 16 – Mar. 20 The Second Law and perpetual motion machines 6 • 14 Mar. 23 – Mar. 27 Entropy, probability, and the arrow of time 7

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