EGR 334 Thermodynamics Chapter 5:

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# EGR 334 Thermodynamics Chapter 5: - PowerPoint PPT Presentation

EGR 334 Thermodynamics Chapter 5: . Lecture 20: 2 nd Law of Thermodynamics Class Discussion. Today’s main concepts:. Understand the need for and the usefulness of the 2 nd law Be able to explain what is meant by a spontaneous process.

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### EGR 334 ThermodynamicsChapter 5:

Lecture 20:

2nd Law of Thermodynamics

Class Discussion

Today’s main concepts:
• Understand the need for and the usefulness of the 2nd law
• Be able to explain what is meant by a spontaneous process.
• Be able to able to explain the 2nd Law of Thermodynamics using gives different aspects of the law.
• Be able to discuss the different aspects of the 2nd Law

Homework Assignment:

Problems from Chap 5: 3, 6, 17, 20

Points will be given for contributions to the discussion.

+ 2 points for significant input.

+ 1 point for moving conversation forward

+ 0 point for just adding filler

- 1 point for incorrect information or concepts

+ 1 bonus point for correcting another’s incorrect statement

Process for Chapter 5 Discussion:

1) A random student will be selected and given the Orb of Focus.

2) A concept from Chap 5 will be introduced.

3) Selected student will start the discussion.

4) As other students want to contribute, they will raise their hand and the current speaker will pass the Orb of Focus to one of the students who wish to speak. If there are no volunteers, the speaker may pass the Orb to a student of their choice.

5) The instructor will introduce new terms as discussion runs down.

Terms for Chap 5 Class Discussion :

Irreversible vs. Reversible

Clausius Statement

Spontaneous Heat Transfer

Kelvin-Planck Statement

Entropy Statement

Internally Reversible Process

Carnot Corollaries

Carnot Efficiency

Max. heat pump efficiency

Max. refrigeration cycle COP

Carnot Cycle

ClausiusInequality