Thermal Science (18AS41)
Vamsi Krishna Chowduru, Asst Prof
, Textbooks and References
Text Books:
1. Yunus A Cengel, Heat and Mass Transfer – A practical approach , 5th Edition, Tata McGraw
Hill Publishing Company Limited, 2007.
2. Incropera, Dewitt, Bergman, Lavine, Fundamentals of Heat and Mass Transfer, 6th Edition,
Wiley & Sons, 2007.
Reference Books:
1. Hegde, R.K, Heat and Mass Transfer – Basic approach , Sapna Book House, Bangalore.
, Unit IV
Heat Transfer - Conduction
• Modes of heat transfer
• Differential equation of one dimensional heat conduction
• Boundary conditions and initial conditions
• Thermal resistance concept and electrical analogy
• Heat transfer through composite wall
• Concepts of overall heat transfer coefficient
• Critical thickness of insulation.
, Heat Transfer
“The form of energy that can be transferred from one system to another as a result of tempera
difference”
• The science that deals with the determination of the rates of such energy transfer is “
Transfer”.
• Always from higher temperature medium to lower temperature medium.
• No heat transfer occurs when two mediums are at same temperature
• Three modes of Heat Transfer: a) Conduction b) Convection c) Radiation
• The amount of heat transferred during the process is denoted by Q.
• The amount of heat transferred per unit time is called “HEAT TRANSFER RATE” Q dot.
Δ𝑡
𝑄 = න Q𝑑𝑜𝑡 𝑑𝑡 𝑄 = 𝑄 𝑑𝑜𝑡 × ∆𝑡 (𝐽)
0
• The rate of heat transfer per unit area normal to the direction of heat transfer is called “
FLUX”
𝑄 𝑑𝑜𝑡 𝑊
𝑄′ =
𝐴 𝑚2
Vamsi Krishna Chowduru, Asst Prof
, Textbooks and References
Text Books:
1. Yunus A Cengel, Heat and Mass Transfer – A practical approach , 5th Edition, Tata McGraw
Hill Publishing Company Limited, 2007.
2. Incropera, Dewitt, Bergman, Lavine, Fundamentals of Heat and Mass Transfer, 6th Edition,
Wiley & Sons, 2007.
Reference Books:
1. Hegde, R.K, Heat and Mass Transfer – Basic approach , Sapna Book House, Bangalore.
, Unit IV
Heat Transfer - Conduction
• Modes of heat transfer
• Differential equation of one dimensional heat conduction
• Boundary conditions and initial conditions
• Thermal resistance concept and electrical analogy
• Heat transfer through composite wall
• Concepts of overall heat transfer coefficient
• Critical thickness of insulation.
, Heat Transfer
“The form of energy that can be transferred from one system to another as a result of tempera
difference”
• The science that deals with the determination of the rates of such energy transfer is “
Transfer”.
• Always from higher temperature medium to lower temperature medium.
• No heat transfer occurs when two mediums are at same temperature
• Three modes of Heat Transfer: a) Conduction b) Convection c) Radiation
• The amount of heat transferred during the process is denoted by Q.
• The amount of heat transferred per unit time is called “HEAT TRANSFER RATE” Q dot.
Δ𝑡
𝑄 = න Q𝑑𝑜𝑡 𝑑𝑡 𝑄 = 𝑄 𝑑𝑜𝑡 × ∆𝑡 (𝐽)
0
• The rate of heat transfer per unit area normal to the direction of heat transfer is called “
FLUX”
𝑄 𝑑𝑜𝑡 𝑊
𝑄′ =
𝐴 𝑚2
