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Heat Temperature Conduction Convection Radiation

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Presentation on theme: "Heat Temperature Conduction Convection Radiation"— Presentation transcript:

1 Heat Temperature Conduction Convection Radiation
Heat and Heat Transfer Heat Temperature Conduction Convection Radiation

2 Convection Heat transfer by movement of particles or molecules
Fluids (liquids and Gases) Mechanism Hot fluid becomes less dense and rises Cold fluid is more dense and sinks Convection current Examples

3

4 Radiation Heat transfer without use of a medium
Electromagnetic radiation Infra-red radiation Microwave Mechanism Emission of electromagnetic radiation

5 Surfaces and Radiation
Black Surface Good radiator, good absorber White surface (Good reflector) bad absorber, bad radiator Silver Surface Very good reflector, bad absorber

6

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