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  2. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    Point-of-use (POU) tankless water heaters are located immediately where the water is being used, so the water is almost instantly hot, which reduces water wastage. POU tankless heaters also can save more energy than centrally installed tankless water heaters, because no hot water is left in lengthy supply pipes after the flow is shut off.

  3. 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.

  4. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Outline of water – Overview of and topical guide to water; Water (data page) – Chemical data page for water is a collection of the chemical and physical properties of water. Aquaphobia – Persistent and abnormal fear of water; Blue roof – Roof of a building that is designed to provide temporary water storage

  5. Sustainable energy - Wikipedia

    en.wikipedia.org/wiki/Sustainable_energy

    For example, transitioning from oil to solar power as the energy source for cars requires the generation of solar electricity, modifications to the electrical grid to accommodate fluctuations in solar panel output or the introduction of variable battery chargers and higher overall demand, adoption of electric cars, and networks of electric ...

  6. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The monoblock type collects the water in a bucket or tray and stops when full. The air-to-air type re-evaporates the water, discharges it through the ducted hose, and can run continuously. Many but not all portable units draw indoor air and expel it outdoors through a single duct, negatively impacting their overall cooling efficiency.

  7. Singapore - Wikipedia

    en.wikipedia.org/wiki/Singapore

    Singapore has declared that it will be water self-sufficient by the time its 1961 long-term water supply agreement with Malaysia expires in 2061. However, according to official forecasts, water demand in Singapore is expected to double from 1.4 to 2.8 billion litres (1.4 to 2.8 million cubic metres; 370 to 740 million US gallons) per day ...