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  2. Boiler blowdown - Wikipedia

    en.wikipedia.org/wiki/Boiler_blowdown

    A pipe near the bottom of the blowoff tank maintains a water level below the blowdown entry point and allows cooler water remaining from earlier blowdown events to drain from the tank first. Two bottom blowdown valves are often used in series to minimize erosion. One valve serves as the sealing valve, and the other as the blowdown valve.

  3. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Where hot-water space heating boilers are installed, domestic hot water cylinders are usually heated indirectly by primary water from the boiler, or by an electric immersion heater (often as backup to the boiler). In the UK these vessels are called indirect cylinders and direct cylinders, respectively. Additionally, if these cylinders form part ...

  4. Hot water storage tank - Wikipedia

    en.wikipedia.org/wiki/Hot_water_storage_tank

    A hot water storage tank (also called a hot water tank, thermal storage tank, hot water thermal storage unit, heat storage tank, hot water cylinder, and geyser) is a water tank used for storing hot water for space heating or domestic use. Water is a convenient heat storage medium because it has a high specific heat capacity. This means ...

  5. Back boiler - Wikipedia

    en.wikipedia.org/wiki/Back_boiler

    The back boiler is typically used with a gravity feed circuit to the hot water cylinder, with a vent or overflow to prevent excess pressure build up.It can also be connected to a series of radiators to provide central heating but usually requires an electrical pump to be fitted to circulate the hot water, some systems can use the gravity circuit to include radiators.

  6. Boiler - Wikipedia

    en.wikipedia.org/wiki/Boiler

    Water level indicators: They show the operator the level of fluid in the boiler, also known as a sight glass, water gauge or water column. Bottom blowdown valves: They provide a means for removing solid particulates that condense and lie on the bottom of a boiler. As the name implies, this valve is usually located directly on the bottom of the ...

  7. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Power outage: In case of a power outage, tankless heaters cannot supply hot water, unlike tank based heaters which can supply the hot water stored in the tank. LED Light Strobe effect: Most residential demand water heaters act by modulating the heating elements to match the flow rate. This is required to prevent overheating in the heating chamber.

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