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Thermal Properties & Processes: Study of Expansion, Conduction, Convection, & Radiation, Study notes of Physics

An excerpt from a physics textbook covering various thermal properties and processes, including thermal expansion, conduction, convection, and radiation. It discusses the general equation for thermal expansion, the difference between water and most materials, the concept of conduction and its equation, the comparison of series and parallel thermal blocks, and the calculation of heat radiation. It also includes a problem regarding the temperature between two blocks and a question about the amount of heat per second coming off a person.

Typology: Study notes

2009/2010

Uploaded on 12/12/2010

9jacpthe
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©2008 by W.H. Freeman and Company
20 – Thermal properties and Processes
Thermal Expansion
Transfer of Heat
Conduction
Convection
Radiation
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©2008 by W.H. Freeman and Company

20 – Thermal properties and Processes

• Thermal Expansion

• Transfer of Heat

  • (^) Conduction
  • (^) Convection
  • (^) Radiation

©2008 by W.H. Freeman and Company

Thermal Expansion

General equation: Volume example: 2 Litre bottle of milk (assume like water) .. how much expand with 100 degree change? β related to α?

©2008 by W.H. Freeman and Company

Conduction – heat transfer through materials

Q T T

I kA t x R x R kA T RI

©2008 by W.H. Freeman and Company

Serial

Parallel

©2008 by W.H. Freeman and Company

Thermal imaging

before after ?????

©2008 by W.H. Freeman and Company

Radiation Q^ 4

e AT t

How much heat per second coming off a person? (A=1.4 m 2 , e=0.5, T=37 C)