12.11.2014 Views

Heat Transfer

Heat Transfer

Heat Transfer

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Convection<br />

! Large scale molecular migration with high<br />

kinetic energy<br />

! Happens in liquids and gases<br />

! Molecules have more freedom for<br />

movement<br />

! Warm, less dense gas moves upward<br />

! Cooler, more dense gas moves downward<br />

! Convection currents

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