In heat flow {conduction, heat}|, collisions among molecules can transfer translational random kinetic energy.
materials
Fluids are good heat conductors, because molecules move freely. Metals are good heat conductors, because electrons move freely. Diamonds have high thermal conductivity, because crystal vibrations transfer heat.
area
Conductive-heat flow rate increases as contact area increases. Adding fins to surfaces or roughing up surfaces increases surface area and conducts heat better.
temperature
Conductive-heat flow rate increases as temperature difference increases. At room temperature, good conductor, such as metal, feels cool to touch, because heat moves quickly away from warmer human body. Poor conductor, such as plastic or wool, feels neither cool nor warm. Steering wheel covers and seat covers reduce heat conductivity.
Physical Sciences>Physics>Heat>Transfer
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Date Modified: 2022.0224