'Internally reversible' presentation slideshows

Entropy

Entropy. Second Law Characteristic. Entropy. Clausius Inequality: For internally reversible cycles:. Entropy. Entropy is defined as: dS = ( ? Q/T) int rev (kJ/K) S is entropy per unit mass (kJ/kgK) Entropy is a property of a state not a process Change of entropy:. Entropy.

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Second Law of Thermodynamics Alternative Statements

Second Law of Thermodynamics Alternative Statements. Clausius Statement Kelvin-Planck Statement Entropy Statement.

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Chapter 7 ENTROPY

Thermodynamics: An Engineering Approach Seventh Edition in SI Units Yunus A. Cengel, Michael A. Boles McGraw-Hill, 20 11. Chapter 7 ENTROPY. Objectives. Apply the second law of thermodynamics to processes. Define a new property called entropy to quantify the second-law effects.

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Cycles

Internal Energy (U): A measure of energy at a macroscopic level due to the molecular translation, vibration, rotation (an Extensive Property). Internal Energy (u) can also be expressed as an intensive property u=U/m (internal energy per unit mass).

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EGR 334 Thermodynamics Chapter 5: Sections 10-11

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Chapter 6: Entropy

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Evaluating entropy changes

Evaluating entropy changes. Since entropy is a property, the entropy change between two specified states does not depend on the process (reversible or irreversible) that occurs between the two states.

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Announcements 9/24/12

Announcements 9/24/12. Exam review session: Wed, 5-6:30 pm, room C295 Reading assignment for Wednesday, see footnote in syllabus:

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Thermodynamics of the Internal Combustion Engine

Thermodynamics of the Internal Combustion Engine. AGUS HARYANTO. PERSAMAAN2 TERMODINAMIKA. Hukum Boyle untuk gas ideal: P 1 V 1 = P 2 V 2 = P n V n = konstan Hukum Charles: Pada P konstan , V 1 /V 2 = T 1 /T 2 Pada V konstan , P 1 /P 2 = T 1 /T 2 Persamaan gas ideal

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The equivalence of the ideal gas and thermodynamic temperature scales

The equivalence of the ideal gas and thermodynamic temperature scales. Choose the ideal gas as the working fluid for a Carnot engine or refrigerator and place one of the reservoir in thermal equilibrium with water at triple point. . Here,. Conclusion: T(t ideal gas )=t ideal gas

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Class 4 - Equilibrium and Reversible Processes

Class 4 - Equilibrium and Reversible Processes. Part 1 - Contact Before Work 5 min Part 2 - Review and Report Out 45 min Break 10 min Part 3 - Review (continued) 15 min Part 4 - Forces & Energy Transfer 10 min Part 5 - The Equations 10 min

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Entropy Change by Heat Transfer

Entropy Change by Heat Transfer. Define T hermal E nergy R eservoir (TER) Constant mass, constant volume No work - Q only form of energy transfer T uniform and constant. Entropy Change by Heat Transfer. Consider two TERs at different Ts, in contact but isolated from surroundings

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Announcements 9/26/11

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Reading quiz

Reading quiz. Which of the following is a version of the Second Law of Thermodynamics? The entropy of any system decreases in all real processes The entropy of any system increases in all real processes The entropy of the Universe decreases in all real processes

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Building and Use

DEMONSTRATION SITE 3 UOR, Faculty of Visual Arts Marcel Rosca, Codruta Bendea University of Oradea. Building and Use. Heating & Cooling System. Heat Pump.

98 views • 1 slides