Energy transfer by conduction
topic found in energy transfer by heating
- Created by: Blackberry145
- Created on: 05-11-20 18:25
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- energy transfer by conduction
- testing rods of different materials as conductors
- the rods
- need to be the same width and length
- each rod is coated witha thin layer of wax at one end
- the uncoated ends are then heated together
- the wax that melts fastest on the rod is the best conductor
- metals >non metals
- copper>steel
- glass>wood
- the rods
- thermal conductivity
- the energy transfer by conduction depends on the materials thermal conductivity
- the greater the conductivity the more energy per second it transferes by conduction
- the energy transfer by conduction depends on the materials thermal conductivity
- insulation matters
- materials that are good insulators are necassery to keep warm in home or outside.
- good insulators need to have a low thermal conductivity.
- energy transfer depends on
- temperature difference across material
- the thickness
- the thermal conductivity
- materials that are good insulators are necassery to keep warm in home or outside.
- key points
- metals are the best conductors of energy
- non-metals materials such as wool and fiberglass are the best
- the higher the thermal conductivity the hight rate of energy transfer.
- the thicker layer of insulation the lower rate of engergy transfer.
- testing rods of different materials as conductors
- energy transfer depends on
- temperature difference across material
- the thickness
- the thermal conductivity
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