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  2. Block heater - Wikipedia

    en.wikipedia.org/wiki/Block_heater

    Some cars are produced with block heaters from the factory, while others are fitted with block heaters as an aftermarket add-on. [3] The most common type of block heater is an electric heating element in the engine block , which is connected through a power cord often routed through the vehicle's grille.

  3. Core plug - Wikipedia

    en.wikipedia.org/wiki/Core_plug

    Core plugs were initially designed merely as a necessary engine block component which was made necessary due to the "sand casting" method used to initially form an engine block. After the initial casting of the engine block, core plugs were designed to plug off the "sand exit ports" of the newly formed engine block.

  4. Heating element - Wikipedia

    en.wikipedia.org/wiki/Heating_element

    Thick-film heaters are a type of resistive heater that can be printed on a thin substrate. Thick-film heaters exhibit various advantages over the conventional metal-sheathed resistance elements. In general, thick-film elements are characterized by their low-profile form factor, improved temperature uniformity, quick thermal response due to low ...

  5. Electric heating - Wikipedia

    en.wikipedia.org/wiki/Electric_heating

    30 kW resistance heating coils This radiant heater uses tungsten halogen lamps. Electric heating is a process in which electrical energy is converted directly to heat energy. Common applications include space heating, cooking, water heating and industrial processes. An electric heater is an electrical device that converts an electric current ...

  6. Andrew Freeman (inventor) - Wikipedia

    en.wikipedia.org/wiki/Andrew_Freeman_(inventor)

    Andrew Freeman (March 10, 1909 – January 17, 1996) was an American electrical engineer and the inventor of the electric block heater for automobiles. [1] Andrew L. Freeman was born in Upham, North Dakota. He attended the University of North Dakota in Grand Forks, North Dakota, where he majored in electrical engineering.

  7. Self-regulating heater - Wikipedia

    en.wikipedia.org/wiki/Self-regulating_heater

    One application of a specially shaped heating element is to increase the surface area of the heating element. A large surface area means the element can operate at a lower temperature and still deliver a large amount of heat. The lower temperature may make a heater safer. However, other safety measures can assure the safety of conventional heaters.

  8. Air preheater - Wikipedia

    en.wikipedia.org/wiki/Air_preheater

    Schematic diagram of typical coal-fired power plant steam generator highlighting the air preheater (APH) location. An air preheater is any device designed to heat air before another process (for example, combustion in a boiler), with the primary objective of increasing the thermal efficiency of the process.

  9. Bang–bang control - Wikipedia

    en.wikipedia.org/wiki/Bang–bang_control

    A water heater that maintains desired temperature by turning the applied power on and off (as opposed to continuously varying electrical voltage or current) based on temperature feedback is an example application of bang–bang control. Although the applied power switches from one discrete state to another, the water temperature will remain ...