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  2. 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 ...

  3. Condensing boiler - Wikipedia

    en.wikipedia.org/wiki/Condensing_boiler

    Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.

  4. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    Radiators through which the heated water passes in order to release heat into rooms. The circulating water systems use a closed loop; the same water is heated and then reheated. A sealed system provides a form of central heating in which the water used for heating circulates independently of the building's normal water supply.

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    They typically use low power heating elements, about 1 kW to 1.5 kW, and can provide hot water long enough for hand washing, or, if plumbed into an existing hot water line, until hot water arrives from a remote high capacity water heater. They may be used when retrofitting a building with hot water plumbing is too costly or impractical.

  6. House Energy Rating - Wikipedia

    en.wikipedia.org/wiki/House_energy_rating

    The first part of rating consists reports on water consumption, energy consumption and GHGs emission per year, which are compared against a standard building of same type on a scale ranging from A1-C5. Second part of the system, proposes the different possible ways for saving of energy and water consumption with respect to the cost involved

  7. Boiler - Wikipedia

    en.wikipedia.org/wiki/Boiler

    To measure the boiler efficiency in indirect method, parameter like these are needed: Ultimate analysis of fuel (H 2, S 2, S, C, moisture constraint, ash constraint) Percentage of O 2 or CO 2 at flue gas; Flue gas temperature at outlet; Ambient temperature in °C and humidity of air in kg/kg; GCV of fuel in kcal/kg; Ash percentage in ...

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