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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. 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 ...

4. Feedwater heater - Wikipedia

   en.wikipedia.org/wiki/Feedwater_heater

   Feedwater heater. A Rankine cycle with two steam turbines and a single open feedwater heater. A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler. [ 1][ 2][ 3] Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic ...

5. 11 Reasons Why Your Water Is Only Lukewarm - AOL

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

   The dip tube pushes cold water down into the bottom of your tank to be heated. When the dip tube malfunctions, the water doesn’t get pushed down into the heating mechanism. As a result, your ...

6. Steam drum - Wikipedia

   en.wikipedia.org/wiki/Steam_drum

   A steam drum is a standard feature of a water-tube boiler. It is a reservoir of water/steam at the top end of the water tubes. The drum stores the steam generated in the water tubes and acts as a phase- separator for the steam/water mixture. The difference in densities between hot and cold water helps in the accumulation of the "hotter"-water ...

7. Tips for troubleshooting water heater issues - AOL

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

   If your pilot light is off, it means your water tank isn’t lit. With gas water heaters, no flame means no heat. To check your pilot light, turn the gas control knob on your heater to the setting ...