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 II
First law of thermodynamics:
• Concept of energy and various form of energy
• Internal energy, Enthalpy, Specific heats
• First law applied to elementary processes
• Closed systems and control volumes
• Note: To be continued
, First law of thermodynamics
• Study the relationships between various form of energy and energy interactions.
“Energy can neither be created nor destroyed during a process, but can only change forms”
• Consider a rock having 10kg of mass, 10kJ of Potential energy, 0 kJ Kinetic energy. W
downward elevation potential energy (mgΔz) exactly equals the increase in Kinetic energy [m
V12)/2] when the air resistance is negligible.
“For all adiabatic processes between two specified states of a closed system, the net work is the
regardless of the nature of the closed system and the details of the process”
ENERGY BALANCE
“The net change (increase or decrease) in the total energy of the system during a process is equ
the difference between total energy entering and the total energy leaving the system during th
process”
𝐸𝑖𝑛 − 𝐸𝑜𝑢𝑡 = Δ𝐸𝑠𝑦𝑠𝑡𝑒𝑚
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 II
First law of thermodynamics:
• Concept of energy and various form of energy
• Internal energy, Enthalpy, Specific heats
• First law applied to elementary processes
• Closed systems and control volumes
• Note: To be continued
, First law of thermodynamics
• Study the relationships between various form of energy and energy interactions.
“Energy can neither be created nor destroyed during a process, but can only change forms”
• Consider a rock having 10kg of mass, 10kJ of Potential energy, 0 kJ Kinetic energy. W
downward elevation potential energy (mgΔz) exactly equals the increase in Kinetic energy [m
V12)/2] when the air resistance is negligible.
“For all adiabatic processes between two specified states of a closed system, the net work is the
regardless of the nature of the closed system and the details of the process”
ENERGY BALANCE
“The net change (increase or decrease) in the total energy of the system during a process is equ
the difference between total energy entering and the total energy leaving the system during th
process”
𝐸𝑖𝑛 − 𝐸𝑜𝑢𝑡 = Δ𝐸𝑠𝑦𝑠𝑡𝑒𝑚
