Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
We know that the steady flow energy equation for any kind of open system follows the energy balance concept.
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
Consider air heated from the temperature of T1 to T2 at constant volume and also heat transfer with the surrounding at To.
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
First law efficiency is defined as the ratio between net work output and heat supplied to the system.
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
Irreversibility is defined as the difference between maximum work and actual work obtained in a process.
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
A thermodynamic system undergoes a change of state through a reversible process until it comes to equilibrium with the atmosphere.
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
The portion of the energy supplied as heat which can be converted into useful work by a reversible engine.
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
Solved Anna University Problems on Entropy principles: Availability and Applications of II Law - Engineering Thermodynamics
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
Solved Problems on Entropy: Availability and Applications of II Law - Engineering Thermodynamics
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
As stated earlier, the entropy generation during the process depends on the change in entropy of the system and change in entropy of the surrounding.
Thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
As per the entropy concept, the entropy change of any system is more than the entropy transfer by an amount equal to the entropy generated during the process.
Third law of thermodynamics
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
The entropy of a pure crystalline substance at absolute zero temperature is zero.
Subject and UNIT: Engineering Thermodynamics: Unit III: Availability and Applications of II Law
Entropy principle is the quantitative approach of the second law of thermodynamics. It is due to irreversibility of the process.