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  2. Hot water storage tank - Wikipedia

    en.wikipedia.org/wiki/Hot_water_storage_tank

    A hot water storage tank where one of the heat sources is solar heating. Almost the same example as above, but in a domestic habitat. 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 in South African English [1]) is a water tank used ...

  3. Chip heater - Wikipedia

    en.wikipedia.org/wiki/Chip_heater

    Chip heater. The chip heater is a single point, tankless, domestic hot water system popular in Australia and New Zealand from the 1880s until the 1960s. Examples of this form of domestic water heater are still in use. The chip heater consisted of a cylindrical unit with a fire box and flue, through which a water pipe was run.

  4. 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.

  5. Water aerobics - Wikipedia

    en.wikipedia.org/wiki/Water_aerobics

    Water aerobics (waterobics, aquarobics, aquatic fitness, aquafitness, aquafit) is the performance of aerobic exercise in water such as in a swimming pool. It is done mostly vertically and without swimming typically in waist deep or deeper water. Water aerobics is a form of aerobic exercise that requires water-immersed participants.

  6. Do you burn more calories when it's hot out? What a ... - AOL

    www.aol.com/news/burn-more-calories-hot...

    You won't burn more calories in the heat, but that may be a different story in cold weather. According to the National Institutes of Health, the body works very hard to maintain its internal body ...

  7. 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 ...

  8. Solar water heating - Wikipedia

    en.wikipedia.org/wiki/Solar_water_heating

    The tested SWH system had about 20% of the impact of an electrical water heater and half that of a gas water heater. [50] Analysing their lower impact retrofit freeze-tolerant solar water heating system, Allen et al. (qv) reported a production CO 2 impact of 337 kg, which is around half the environmental impact reported in the Ardente et al ...

  9. Water heat recycling - Wikipedia

    en.wikipedia.org/wiki/Water_heat_recycling

    When recycling water from a bath (100-150 litres) or shower (50-80 litres) the waste water temperature is circa 20-25 °C. An in-house greywater recycling tank holds 150-175 litres allowing for the majority of waste water to be stored. Utilizing a built in copper heat exchange with circulation pump the residual heat is recovered and transferred ...

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