Thermodynamics I ENGR 251 Faculty of Engineering and Computer Sciences Concordia University Course Introduction.

Thermodynamics IENGR 251

Faculty of Engineering and Computer SciencesConcordia University

Course Introduction

Purpose:Introduction about this course and go through all the logistics

Lecture 0

essential informationcourse formatevaluation schemecourse topics

Instructor: Dr. Hoi Dick NgRoom: EV 004.229 Tel: (514) 848-2424 ext 3177 E-mail: [email protected] 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

Teaching Assistants

Tutorial MB   F  16:15-17:55H-401 

Ms. Ingee Hassan [email protected]

Mr. Ronak Lakhani [email protected]

Tutorial MA   F  16:15-17:55H-631

Mr. Chunwei [email protected]

 Markers

Tutorial XA   F  11:45-13:25H-401 

Mr. Michael Pearson [email protected]

Mr. Shivam Gupta [email protected]

 Markers

Tutorial XB   F  11:45-13:25H-403 

Mr. Khaled Yassin [email protected]

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

Objectives

Graduate Attributes:This course covers the following graduate attributes:

1) A knowledge base for engineeringDemonstrated competence in university level mathematics, natural sciences, engineering fundamentals, and specialized engineering knowledge appropriate to the program.

2) Problem analysisAn ability to use appropriate knowledge and skills to identify, formulate, analyze, and solve complex engineering problems in order to reach substantiated conclusions.

Why should I learn thermodynamics in engineering ?

Motivation

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).

Engineering thermodynamics is the study of how energy and heat can be used to perform useful work.

In order to consider yourself an Engineer, you must understand the concepts of thermodynamics and be able to apply them to real-world systems. !!!!

Why should I learn thermodynamics in engineering ?

Motivation

why we can’t make ICE cars that are 100% efficient?

why your coffee gets cold or your beer (or soda) gets warm?

Well… this may be true for you while you are still the first year junior. But definitely not for thermo and those who pass this course….

Who can tell me the second law of thermodynamics?

Why should I learn thermodynamics ?

Motivation

This schematic demonstrates how the main concepts of this course are interrelated.

Heat

Converted heat to work

1st Law

Conservation of energy

Heat flows from hot to cold

2nd Law

Analysis of engineering systems

Quality of energy

Recommended 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.

$300 for hard cover $200 for soft cover $144 for the e-book

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

Grading Scheme

• Two quizzes 15%• Midterm Test 30%

(Tentatively scheduled for November 2, 2015)

• Final Exam 55%

** 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

SHARP EL-531

Some tips in solving thermodynamics problem

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 10,000C 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.

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

Most important, ENJOY this course

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.

Don’t COPY Don’t CHEATDon’t BE LAZYDon’t BREAK your armDon’t PAY for any medical noteDon’t MSN/ICQ or chit-chat in classDon’t FALL asleepDon’t DEFERDon’t forget you are a University student…etc

PLEASE try not to leave in the middle of the lecture.

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)

Week Dates Topic TextbookChapters

1Sept. 9 – Sept. 11 Basic concepts: temperature, and pressure 1

2 Sept. 16 – Sept. 18 Properties of solids and liquids 33 Sept. 23 – Sept. 25 Phase changes, equilibrium, and thermodynamic tables 34 Sept. 30 – Oct. 2 Ideal gas law and thermodynamic properties 35 Oct. 7 – Oct. 9 Energy transfer by heat and work 2, 46 Oct. 16 Midterm7 Oct. 21 – Oct. 23 First Law analysis of closed systems 48 Oct. 28. – Oct. 30 First Law analysis of open systems 59 Nov. 4 – Nov. 6 Gas power cycles (converting heat to work) & engines 910 Nov. 11 – Nov. 13 Engines (planes, trains, and automobiles) 911 Nov. 18 – Nov. 20 Heat engines (maximizing efficiency) 9&612 Mechanical energy and the First Law13 Mar. 16 – Mar. 20 The Second Law and perpetual motion machines 614 Mar. 23 – Mar. 27 Entropy, probability, and the arrow of time 7

Provisional Course Schedule