Thermal Science (18AS41)
Vamsi Krishna Chowduru, Asst Prof
, Textbooks and References
Text Books:
1. Yunus A.Cengel and M.A.Boles, Thermodynamics : An Engineering Approach , McGraw H
New York, 2006.
2. Yunus A Cengel, Heat and Mass Transfer – A practical approach , 3rd Edition, Tata McGraw
Hill Publishing Company Limited, 2007.
Reference Books:
1. P K Nag, Basic and applied Thermodynamics , Tata McGraw-Hill Education, 2nd Edition, 20
2. Hegde, R.K, Heat and Mass Transfer – Basic approach , Sapna Book House, Bangalore.
, Unit III
Second Law of thermodynamics:
• Limitation of First law of Thermodynamics
• Concept of Heat engines and heat pumps/refrigerators
• Kelvin Planck and Clausius Statements
• Numerical Problems
• Reversible and irreversible process
• Carnot Cycle
• Clausius Inequality
• Concept of Entropy , T-s diagrams
• Availability
• Third law of thermodynamics
, Limitations of First law of thermodynamics
• A cup of hot coffee left in a cooler room eventually cools off. The reverse
of this process- coffee getting hotter as a result of heat transfer from a
cooler room does not take place.
• Consider heating of a room by passage of electric current through an
electric resistor. Transferring of heat from room will not cause electrical
energy to be generated through the wire.
• Consider a paddle-wheel mechanism operated by fall of mass. Potential
energy of mass decreases and internal energy of the fluid increases.
Reverse process does not happen, although this would not violate first
law.
• Water flows down hill where by potential energy is converted into K.E.
Reverse of this process does not occur in nature.
Vamsi Krishna Chowduru, Asst Prof
, Textbooks and References
Text Books:
1. Yunus A.Cengel and M.A.Boles, Thermodynamics : An Engineering Approach , McGraw H
New York, 2006.
2. Yunus A Cengel, Heat and Mass Transfer – A practical approach , 3rd Edition, Tata McGraw
Hill Publishing Company Limited, 2007.
Reference Books:
1. P K Nag, Basic and applied Thermodynamics , Tata McGraw-Hill Education, 2nd Edition, 20
2. Hegde, R.K, Heat and Mass Transfer – Basic approach , Sapna Book House, Bangalore.
, Unit III
Second Law of thermodynamics:
• Limitation of First law of Thermodynamics
• Concept of Heat engines and heat pumps/refrigerators
• Kelvin Planck and Clausius Statements
• Numerical Problems
• Reversible and irreversible process
• Carnot Cycle
• Clausius Inequality
• Concept of Entropy , T-s diagrams
• Availability
• Third law of thermodynamics
, Limitations of First law of thermodynamics
• A cup of hot coffee left in a cooler room eventually cools off. The reverse
of this process- coffee getting hotter as a result of heat transfer from a
cooler room does not take place.
• Consider heating of a room by passage of electric current through an
electric resistor. Transferring of heat from room will not cause electrical
energy to be generated through the wire.
• Consider a paddle-wheel mechanism operated by fall of mass. Potential
energy of mass decreases and internal energy of the fluid increases.
Reverse process does not happen, although this would not violate first
law.
• Water flows down hill where by potential energy is converted into K.E.
Reverse of this process does not occur in nature.
