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  2. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    Under the pre-2015 standard, a 75 US gal (280 L; 62 imp gal) gas storage water heater with a nominal input of 22 kW (75,000 BTU/h) or less was able to have an energy factor as low as 53%, while under the 2015 standard, the minimum energy factor for a 75-US-gallon gas storage tank water heater is now 74%, which can only be achieved by using ...

  3. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

  4. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    Tilting-disc inconel check valve Check valve symbol on piping and instrumentation diagrams.The arrow shows the flow direction. Vertical lift check valve. A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

  5. File:Solar Water Heater Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:Solar_Water_Heater...

    An SVG Diagram of a Solar water heater. Based on ANRE's Brochure on solar heating system's ...

  6. File:Diagram of Water Distribution System.svg - Wikipedia

    en.wikipedia.org/wiki/File:Diagram_of_Water...

    English: Diagram of a water distribution system. Inlet water goes through a pumping station. The water is delivered to the top of a water tank. Water pressure created by gravity and delivered to water mains. Water mains are connected to fire hydrants and service lines which are pipes that connect a water main to a building.

  7. Gas heater - Wikipedia

    en.wikipedia.org/wiki/Gas_heater

    Upright non-flued liquefied petroleum gas heater, 1970s A wall mounted gas heater that runs on either propane or natural gas. A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or ...

  8. File:Phase diagram of water.svg - Wikipedia

    en.wikipedia.org/.../File:Phase_diagram_of_water.svg

    English: Phase diagram of water as a log-lin chart with pressure from 1 Pa to 1 TPa and temperature from 0 K to 660 K, compiled from data in and . Note that the phases of Ice X and XI (hexagonal) differ from the diagram in .

  9. Heat pump - Wikipedia

    en.wikipedia.org/wiki/Heat_pump

    The body of water does, however, need to be large enough to be able to withstand the cooling effect of the unit without freezing or creating an adverse effect for wildlife. [30] The largest water-source heat pump was installed in the Danish town of Esbjerg in 2023. [31] [32]