electric heater

electric heater

      device for heating rooms that converts electric current to heat by means of resistors (resistor) that emit radiant energy. Resistors may be composed of metal-alloy wire, nonmetallic carbon compounds, or printed circuits. Heating elements may have exposed resistor coils mounted on insulators, metallic resistors embedded in refractory insulation and encased in protective metal, or a printed circuit encased in glass. Fins may be used to increase the area that dissipates the heat.

      Electric heaters also are used for domestic central heating and for materials processing in industry (see heat pump; electric furnace).

      In an electron tube, an electric heating element shaped in the form of a wire or ribbon is used to supply heat to a cathode; the element provides heat when a current is passed through it.

* * *

Universalium. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • electric heater — noun a small electric space heater (Freq. 1) • Syn: ↑electric fire • Hypernyms: ↑space heater • Hyponyms: ↑heat lamp, ↑infrared lamp • …   Useful english dictionary

  • electric heater — elektrinis šildytuvas statusas T sritis Energetika apibrėžtis Šildymo prietaisas, kuriame šiluma gaunama naudojant elektros energiją. atitikmenys: angl. electric heater vok. elektrisches Heizgerät, n; Elektrowärmegerät, n rus.… …   Aiškinamasis šiluminės ir branduolinės technikos terminų žodynas

  • electric heater — heater powered by electricity …   English contemporary dictionary

  • electric heater — Смотри Электронагреватель …   Энциклопедический словарь по металлургии

  • Electric heating — is any process in which electrical energy is converted to heat. Common applications include heating of buildings, cooking, and industrial processes. An electric heater is an electrical appliance that converts electrical energy into heat. The… …   Wikipedia

  • Electric power — is defined as the rate at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt.When electric current flows in a circuit, it can transfer energy to do mechanical or thermodynamic work. Devices convert… …   Wikipedia

  • electric radiator — electric fire, electric heater or electric radiator noun A device using an electric current, for heating a room • • • Main Entry: ↑electric …   Useful english dictionary

  • Portable electric heater —   A heater that uses electricity and that can be picked up and moved.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • electric fire — noun a small electric space heater • Syn: ↑electric heater • Hypernyms: ↑space heater • Hyponyms: ↑heat lamp, ↑infrared lamp • Part Meronyms: ↑ …   Useful english dictionary

  • heater — Synonyms and related words: Bunsen burner, Dutch oven, automatic, bedpan, bloom heater, blowgun, blowpipe, brazier, brick oven, burner, calefactory, caliduct, car heater, cooker, cookery, defroster, dielectric heater, dielectric preheater,… …   Moby Thesaurus

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”