This document summarizes key points from a lecture on engineering mechanics. The lecture covered the second law of thermodynamics, heat engines, heat pumps, the Otto cycle, and the Carnot cycle. Example problems were also presented on these topics. The lecture was delivered by Talha Solaija on February 27, 2015 for the ME 201 Engineering Mechanics course at Hitec University.

1. ENGINEERING MECHANICS
ME 201
INSTRUCTOR: TALHA SOLAIJA
BS MECHATRONICS ENGINEERING
www.hitecuni.com
2/27/2015 1LECTURE 12

2. 2/27/2015 LECTURE 12 2
ENGINEERING MECHANICS
SECOND LAW OF THERMODYNAMICS
HEAT ENGINE

3. 2/27/2015 LECTURE 12 3
ENGINEERING MECHANICS
SECOND LAW OF THERMODYNAMICS

4. 2/27/2015 LECTURE 12 4
ENGINEERING MECHANICS
SECOND LAW OF THERMODYNAMICS

5. 2/27/2015 LECTURE 12 5
ENGINEERING MECHANICS
SECOND LAW OF THERMODYNAMICS
HEAT PUMP

6. 2/27/2015 LECTURE 12 6
ENGINEERING MECHANICS
SECOND LAW OF THERMODYNAMICS

7. 2/27/2015 LECTURE 12 7
ENGINEERING MECHANICS
OTTO CYCLE

8. 2/27/2015 LECTURE 12 8
ENGINEERING MECHANICS
OTTO CYCLE
Isentropic
Compression
Const. Volume
Heat Addition
Isentropic
Expansion
Const. Volume
Heat Rejection

9. Isothermal Heat
Addition
Isentropic
Expansion
Isothermal Heat
Rejection
Isentropic
Compression
2/27/2015 LECTURE 12 9
ENGINEERING MECHANICS
CARNOT CYCLE

10. Isothermal Heat
Addition
Isentropic
Expansion
Isothermal Heat
Rejection
Isentropic
Compression
2/27/2015 LECTURE 12 10
ENGINEERING MECHANICS
CARNOT CYCLE

11. 2/27/2015 LECTURE 12 11
ENGINEERING MECHANICS
EXAMPLE PROBLEM

12. 2/27/2015 LECTURE 12 12
ENGINEERING MECHANICS
EXAMPLE PROBLEM

13. Imp
• All slides are picked from “Thermodynamics
an Engineering Approach by Cengel”
• Slides are shared on Slide share by Hi
Technology
• In case of Copyrights violation inform with
comment for take down.
2/27/2015 LECTURE 12 13