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  2. Circulator pump - Wikipedia

    en.wikipedia.org/wiki/Circulator_pump

    By installing a thermostatically controlled pump just after the farthest fixture on the loop, cyclic pumping maintains ready hot water up to the last fixture on the loop instead of wasting energy heating the piping from the last fixture to the water heater. Installing a circulation pump at the farthest fixture on a hot water circulation loop is ...

  3. Circulation evaporator - Wikipedia

    en.wikipedia.org/wiki/Circulation_evaporator

    Tubular forced circulation evaporators employs an axial circulation pump which navigates the flow of liquid in a circular motion through the system's heat exchanger in which it is superheated. Thereafter, when the liquid reaches the separator the liquid pressure decreases dramatically forcing a portion of the liquid to be rapidly boiled off.

  4. Forced circulation boiler - Wikipedia

    en.wikipedia.org/wiki/Forced_circulation_boiler

    The secondary pump takes the feed water going to the boiler and raises the pressure of the water going in. In a natural circulation boilers, the circulation of water is dependent on the differential pressures caused by the change of density in the water as it is heated. That is to say that as the water is heated and starts turning to steam, the ...

  5. Caustic embrittlement - Wikipedia

    en.wikipedia.org/wiki/Caustic_embrittlement

    Inside the cracks, the water evaporates and the amount of hydroxide keeps increasing progressively. The concentrated area with high stress works as anode and diluted area works as cathode. At anode, sodium hydroxide attacks the surrounding material and then dissolves the iron of the boiler as sodium ferrate forming rust. This causes ...

  6. Thermosiphon - Wikipedia

    en.wikipedia.org/wiki/Thermosiphon

    Thermosyphon circulation in a simple solar water heater (not a working model; there is no water supply to replenish the tank when the tap is used). A thermosiphon (or thermosyphon) is a device that employs a method of passive heat exchange based on natural convection, which circulates a fluid without the necessity of a mechanical pump.

  7. Storage water heater - Wikipedia

    en.wikipedia.org/wiki/Storage_water_heater

    Solar heat is clean and renewable. This is the most modern system. Increasingly, solar powered water heaters are being used. Their solar thermal collectors are installed outside dwellings, typically on the roof or walls or nearby, and the potable hot water storage tank is typically a pre-existing or new conventional water heater, or a water heater specifically designed for solar thermal.

  8. Sodium hydroxide - Wikipedia

    en.wikipedia.org/wiki/Sodium_hydroxide

    Sodium hydroxide, also known as lye and caustic soda, [1] [2] is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations Na + and hydroxide anions OH −. Sodium hydroxide is a highly corrosive base and alkali that decomposes lipids and proteins at ambient temperatures and may cause severe ...

  9. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Brine draw: Water is directed through a jet pump, which pulls salt water from the brine tank, before the water and brine pass through the resin bed in the normal direction, if co-current, or in the reverse direction, if counter-current. [12] The output of this typically thirty-minute process is discarded through the drain hose.

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