heat transfer

Heat transfer

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  • Created by: laura
  • Created on: 01-06-09 11:25

Conduction

Solids only

Particles vibrate more at hot end.

Collide with other particles and transfer energy.

(http://tbn3.google.com/images?q=tbn:rPeni8xWoKhmgM:http://physicsed.buffalostate.edu/Wiley/CJ6e/img13/conduction.gif)

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Convection

Liquids and gases (fluids)

Liquid/gas is warmed

Fluid expands, becomes less dense and rises

Fluid at top is cooler and falls to bottom

Convection current produced.

(http://tbn0.google.com/images?q=tbn:CH8Yd-4RSz20JM:http://www.uoguelph.ca/geology/geol2250/glossary/HTML%2520files/convection.jpg)

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Radiation

(http://www.mikecurtis.org.uk/images/radiation.jpg)

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