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  2. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Gas water heaters have an exhaust vent or one to two exhaust pipes on the top, and still require electric power for electronics, sensing and ignition. A three-phase, 21 kW, 400-volt tankless water heater in Europe, with new European color coding for three-phase power. There are also heaters that use several single-phase circuits instead.

  3. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Water heating is a heat transfer process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating. In industry, hot water and water heated to steam have many uses. Domestically, water is traditionally heated in vessels known as water heaters ...

  4. 11 Reasons Why Your Water Is Only Lukewarm - AOL

    www.aol.com/11-reasons-why-water-only-171300843.html

    This type of water heater could be 24% to 34% more energy-efficient than a traditional water heater, according to the Department of Energy. Tankless water heaters can also save space, as they don ...

  5. Thermosiphon - Wikipedia

    en.wikipedia.org/wiki/Thermosiphon

    Thermosiphon. Thermosiphon (or thermosyphon) is a method of passive heat exchange, based on natural convection, which circulates a fluid without the necessity of a mechanical pump. Thermosiphoning is used for circulation of liquids and volatile gases in heating and cooling applications such as heat pumps, water heaters, boilers and furnaces ...

  6. Tips for troubleshooting water heater issues - AOL

    www.aol.com/tips-troubleshooting-water-heater...

    To check your pilot light, turn the gas control knob on your heater to the setting marked “pilot.”. This will keep the burner from igniting while you’re checking things out. Lift up the ...

  7. Doble steam car - Wikipedia

    en.wikipedia.org/wiki/Doble_steam_car

    The main new feature was the boiler which formed the basis of later developments from 1930 onwards after the Doble company folded. Various other refinements were applied to individual cars such as a steam-driven water feed pump. Seven model Fs were made, one of which was owned by Abner Doble's wife. They were car numbers 30 to 35, and 39.

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