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An electric heater is an electrical device that converts an electric current into heat. [1] The heating element inside every electric heater is an electrical resistor , and works on the principle of Joule heating : an electric current passing through a resistor will convert that electrical energy into heat energy.
Electric infrared space heater A space heater is a device used to heat a single, small- to medium-sized area. [ 1 ] This type of heater can be contrasted with central heating , which distributes heat to multiple areas.
An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking .
An induction furnace is an electrical furnace in which the heat is applied by induction heating of metal. [1] [2] [3] Induction furnace capacities range from less than one kilogram to one hundred tons, and are used to melt iron and steel, copper, aluminum, and precious metals.
Examples include electric space heaters, fireplaces, and solar heating. [3] Heat pumps: They can be used for heating and cooling, transferring heat using refrigerant and electricity, making them more efficient than other heating systems. [4]
Typically, thick-film heaters are printed on flat substrates, as well as on tubes in different heater patterns. These heaters can attain power densities of as high as 100 W/cm 2 depending on the heat transfer conditions. [13] The thick-film heater patterns are highly customizable based on the sheet resistance of the printed resistor paste.