Lecture 3: Energy vs Entropy Diagrams to Represent Equilibrium and Nonequilibrium States
MIT 2.43 Advanced Thermodynamics, Spring 2024
Instructor: Gian Paolo Beretta
View the complete course: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/
Complete course table of contents with hyperlinks to slides and video timestamps: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_toc_slides_pdf/
Complete course analytical index with hyperlinks to slides and video timestamps: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_index_slides_pdf/
YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP6309d0oJDiVo1CvxUQXJ2il
This lecture covers: Energy vs entropy diagrams to represent equilibrium and nonequilibrium states, adiabatic availability, available energy. Energy and entropy balances. Criteria for reversibility. Minimum entropy decrease to extract energy from a stable equilibrium state.
Instructor suggests to set viewing speed at 1.5 for faster learning.
Slides for this lecture: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_lec03_pdf/
Key moments:
00:00:00 - Introduction
00:01:27 - Review: Definition of Property Energy
00:03:17 - Review: Energy Balance Equation
00:05:14 - Review: Second Law of Thermodynamics
00:07:40 - Review: Definition of Temperature of a Reservoir
00:07:56 - Review: Definition of Property Entropy
00:09:41 - Review: Engineering Meaning of Entropy
00:11:36 - Criteria for Reversibility of a Weight Process
00:14:29 - Review: Entropy Balance Equation
00:18:07 - Review: Maximum Entropy Principle
00:20:10 - Review: State Principle and Fundamental Relation
00:23:35 - Gibbs Relation
00:25:19 - Temperature, Pressure, and Chemical Potentials
00:49:32 - Necessary Conditions for Mutual Equilibrium
00:53:22 - Graphical Representation of Basic Concepts
00:54:20 - Contruction of the Energy vs Entropy Diagram
00:57:11 - Representation of Non-Stable-Equilibrium States
01:01:47 - Special Systems with Upper Bounded Energy
01:22:07 - Review: Definition of Adiabatic Availability
01:23:39 - Representation of Adiabatic Availability
01:27:32 - Review: Mutual Equilibrium and Thermal Reservoir
01:33:52 - Representation of States of a Thermal Reservoir
01:34:45 - Review: Definition of Available Energy
01:36:13 - Representation of Available Energy
01:43:32 - A System in a Stable Equilibrium State Cannot...
License: Creative Commons BY-NC-SA
More information at https://ocw.mit.edu/terms
More courses at https://ocw.mit.edu
Support OCW at http://ow.ly/a1If50zVRlQ
We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at https://ocw.mit.edu/comments.
Instructor: Gian Paolo Beretta
View the complete course: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/
Complete course table of contents with hyperlinks to slides and video timestamps: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_toc_slides_pdf/
Complete course analytical index with hyperlinks to slides and video timestamps: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_index_slides_pdf/
YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP6309d0oJDiVo1CvxUQXJ2il
This lecture covers: Energy vs entropy diagrams to represent equilibrium and nonequilibrium states, adiabatic availability, available energy. Energy and entropy balances. Criteria for reversibility. Minimum entropy decrease to extract energy from a stable equilibrium state.
Instructor suggests to set viewing speed at 1.5 for faster learning.
Slides for this lecture: https://ocw.mit.edu/courses/2-43-advanced-thermodynamics-spring-2024/resources/mit2_43_s24_lec03_pdf/
Key moments:
00:00:00 - Introduction
00:01:27 - Review: Definition of Property Energy
00:03:17 - Review: Energy Balance Equation
00:05:14 - Review: Second Law of Thermodynamics
00:07:40 - Review: Definition of Temperature of a Reservoir
00:07:56 - Review: Definition of Property Entropy
00:09:41 - Review: Engineering Meaning of Entropy
00:11:36 - Criteria for Reversibility of a Weight Process
00:14:29 - Review: Entropy Balance Equation
00:18:07 - Review: Maximum Entropy Principle
00:20:10 - Review: State Principle and Fundamental Relation
00:23:35 - Gibbs Relation
00:25:19 - Temperature, Pressure, and Chemical Potentials
00:49:32 - Necessary Conditions for Mutual Equilibrium
00:53:22 - Graphical Representation of Basic Concepts
00:54:20 - Contruction of the Energy vs Entropy Diagram
00:57:11 - Representation of Non-Stable-Equilibrium States
01:01:47 - Special Systems with Upper Bounded Energy
01:22:07 - Review: Definition of Adiabatic Availability
01:23:39 - Representation of Adiabatic Availability
01:27:32 - Review: Mutual Equilibrium and Thermal Reservoir
01:33:52 - Representation of States of a Thermal Reservoir
01:34:45 - Review: Definition of Available Energy
01:36:13 - Representation of Available Energy
01:43:32 - A System in a Stable Equilibrium State Cannot...
License: Creative Commons BY-NC-SA
More information at https://ocw.mit.edu/terms
More courses at https://ocw.mit.edu
Support OCW at http://ow.ly/a1If50zVRlQ
We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at https://ocw.mit.edu/comments.
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