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  2. Underfloor heating - Wikipedia

    en.wikipedia.org/wiki/Underfloor_heating

    Underfloor heating and cooling is a form of central heating and cooling that achieves indoor climate control for thermal comfort using hydronic or electrical heating elements embedded in a floor. Heating is achieved by conduction, radiation and convection. Use of underfloor heating dates back to the Neoglacial and Neolithic periods.

  3. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    In the early medieval Alpine upland, a simpler central heating system where heat travelled through underfloor channels from the furnace room replaced the Roman hypocaust at some places. In Reichenau Abbey a network of interconnected underfloor channels heated the 300 m 2 large assembly room of the monks during the winter months. The degree of ...

  4. 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 ...

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  6. Ondol - Wikipedia

    en.wikipedia.org/wiki/Ondol

    Unlike modern-day water heaters, the fuel was either sporadically or regularly burned (two to five times a day), depending on frequency of cooking and seasonal weather conditions. With the traditional ondol heating, the floor closer to the furnace was normally warm enough, and the warmest spots reserved for elders and honored guests.

  7. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    In traditional plumbing in the UK, the space-heating boiler is set up to heat a separate hot water cylinder or water heater for potable hot water. Such water heaters are often fitted with an auxiliary electrical immersion heater for use if the boiler is out of action for a time. Heat from the space-heating boiler is transferred to the water ...

  8. Refrigeration - Wikipedia

    en.wikipedia.org/wiki/Refrigeration

    The seasonal harvesting of snow and ice is an ancient practice estimated to have begun earlier than 1000 BC. [13] A Chinese collection of lyrics from this time period known as the Sleaping, describes religious ceremonies for filling and emptying ice cellars. However, little is known about the construction of these ice cellars or the purpose of ...

  9. Savage 110 BA - Wikipedia

    en.wikipedia.org/wiki/Savage_110_BA

    The Savage 110 BA is a bolt-action sniper/tactical rifle manufactured by Savage Arms.The rifle is designated with an "LE" code; "Law Enforcement". All 110 BA series rifles are configured with AccuTrigger, matte-blued barreled action, fluted heavy free-floating barrel, muzzle brake, oversized bolt handle, external box magazine (holding 5 - 6 rounds), magpul adjustable stock, adjustable pistol ...