Heat Transfer
- Created by: ambxrose
- Created on: 30-03-15 14:03
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- Heat Transfer
- Heat is transferred in three different ways
- radiation
- the transfer of heat energy by infrared radiation
- infrared radiation can be emitted by solids,liquids or gases
- the transfer of heat energy by infrared radiation
- conduction
- involves the transfer of energy by particles
- the main form of heat transfer in solids
- convection
- involves the transfer of energy by particles
- the main form of heat transfer in liquids and gases
- radiation
- Infrared Radiation
- All objects are continually emitting and absorbing infrared radiation
- An object that's hotter than it's surroundings emits more radiation than it absorbs
- An object that's cooler than its surroundings absorbs more radiation than it emits
- Radiation depends on surface colour and texture
- dark, matt surfaces absorb infrared radiation well and also emit lots of infrared radiation
- light shiny surfaces reflect the infrared radiation
- Heat is transferred in three different ways
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