Heat Transfer Modes
Describe the fundamental modes of heat transfer.
Expand Hint
Conduction
: the process in which heat flows from objects with higher temperature to objects with lower temperature on a microscopic atom level due to high speed particles crashing into low speed particles, which increases their overall kinetic energy.
Convection
: the movement of fluid causing heat to transfer from one location to another.
Radiation
: electromagnetic waves carrying energy from an emitting body through a vacuum (unlike the other modes), or a transparent medium (solid or liquid).
Advection
: the transfer of heat through bulk motion of a fluid or gas (not possible in solids). There are a lot of parallels with convection, but the main distinction is advection is solely dependent on the currents within a fluid, while convection is a broader process. Convection may contain advection, but not all advection transfers are thermal convections by definition.
Conduction
: the process in which heat flows from objects with higher temperature to objects with lower temperature on a microscopic atom level due to high speed particles crashing into low speed particles, which increases their overall kinetic energy.
Convection
: the movement of fluid causing heat to transfer from one location to another.
Radiation
: electromagnetic waves carrying energy from an emitting body through a vacuum (unlike the other modes), or a transparent medium (solid or liquid).
Advection
: the transfer of heat through bulk motion of a fluid or gas (not possible in solids).
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