Joule heating, also known as resistive heating, is caused by electrical currents. It is used in incandescent light bulbs, which are phasing out and being replaced by different types of lighting fixtures. It is also used in motors, inductors, and generators, hot plates, and hair dryers. Any implement that provides heat is joule based. Heat is generated by the movement of electrons and atomic ions as movement and friction cause heat.
Joule heating or ohmic heating is used in the pasteurization process because it produces high temperatures during short periods and this is how milk is pasteurized, which removes the bacteria and makes it safe for drinking. This type of heating is provided through high tension wires and from the energy provider. It is cost effective and very efficient for home heating through the use of heat pumps.
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