
Heating ventilation and air conditioning
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Conduction: Flow of heat energy through a material without the movement
of any part of the material itself is conduction. Heat energy is present in all
materials in the form of the kinetic energy of their vibrating molecules, and may
be conducted from one molecule to the next in the form of this mechanical
vibration. In the case of metals, which are particularly good conductors of heat,
the free electrons within the material carry heat around very quickly.
Radiation: In physics, radiation is the emission of radiant energy as particles
or waves; for example, heat, light, alpha particles and beta particles. ...