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  2. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    An 80 US gal (300 L; 67 imp gal) electric storage tank water heater was able to have a minimum energy factor of 86% under the pre-2015 standard, while under the 2015 standard, the minimum energy factor for an 80-gallon electric storage tank water heater is now 197%, which is only possible with heat pump technology. This rating measures ...

  3. Solar water heating - Wikipedia

    en.wikipedia.org/wiki/Solar_water_heating

    When a solar water heating and hot-water central heating system are used together, solar heat will either be concentrated in a pre-heating tank that feeds into the tank heated by the central heating, or the solar heat exchanger will replace the lower heating element and the upper element will remain to provide for supplemental heat. However ...

  4. 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 A, that is sent into the hot water storage tank via a smaller pump B (circle with triangle) and the heat exchanger spiral in the hot water storage tank. The other spiral C can be used for a e.g. oil-fired boiler or a wood burner.

  5. Propane, butane, and LPG container valve connections

    en.wikipedia.org/wiki/Propane,_butane,_and_LPG...

    SANS 10019 small cylinders Senegal: Gaz (G.3) South Africa: Camping gas VBC03 (G.33) POL 105 (EN 16129 G.7) POL US (G.9) SANS 10019 small cylinders Zambia [27] POL 105 (EN 16129 G.7) SANS 10019 small cylinders Zimbabwe: POL 105 (EN 16129 G.7) SANS 10019 small cylinders Americas [28] Argentina: DIN 477-1 No. 4 POL US (G.9) Bahamas: POL US (G.9 ...

  6. Solyndra - Wikipedia

    en.wikipedia.org/wiki/Solyndra

    Solyndra rolled its CIGS thin films into a cylindrical shape and placed 40 of them in each 1-by-2-metre (3 ft 3 in by 6 ft 7 in) panel. Solyndra designers thought the cylindrical solar panels absorbed energy from any direction (direct, indirect, and reflected light). [40] Each Solyndra cylinder, one inch in diameter, is made up of two tubes.

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