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  2. Patio heater - Wikipedia

    en.wikipedia.org/wiki/Patio_heater

    Wall-mounted patio heater: fixed to a wall or structure making for safe operation. Hanging patio heater: portable and small footprint; comes in electric only. Tabletop patio heater: ultra-portable and great for smaller groups or outdoor dining, but it uses a small propane tank. Patio heaters have become popular with bars and restaurants, since ...

  3. Electric heating - Wikipedia

    en.wikipedia.org/wiki/Electric_heating

    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 into heat. [1] The heating element inside every electric heater is an electrical ...

  4. Space heater - Wikipedia

    en.wikipedia.org/wiki/Space_heater

    These heaters are often designed such that the frequency of the emitted waves are in the infrared part of the electromagnetic spectrum. The materials used in radiant heaters can vary. Halogen heaters have tungsten filaments in sealed quartz envelopes, mounted in front of a metal reflector in a plastic case. They operate at a higher temperature ...

  5. Convection heater - Wikipedia

    en.wikipedia.org/wiki/Convection_heater

    Convection heater. A convection heater for single-room use. Illustration of the Model "S" Convection Heater by Sala Heater & Mantel, 1924. A convection heater, also known as a convector heater, is a type of heater that utilizes convection currents [1] to heat and circulate air. These currents move through the appliance and across its heating ...

  6. Ground-coupled heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Ground-coupled_heat_exchanger

    A ground-coupled heat exchanger is an underground heat exchanger that can capture heat from and/or dissipate heat to the ground. They use the Earth's near constant subterranean temperature to warm or cool air or other fluids for residential, agricultural or industrial uses. If building air is blown through the heat exchanger for heat recovery ...

  7. Infrared heater - Wikipedia

    en.wikipedia.org/wiki/Infrared_heater

    An infrared heater or heat lamp is a heating appliance containing a high-temperature emitter that transfers energy to a cooler object through electromagnetic radiation. Depending on the temperature of the emitter, the wavelength of the peak of the infrared radiation ranges from 750 nm to 1 mm. No contact or medium between the emitter and cool ...