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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    In summer, ceiling fans and table/floor fans circulate air within a room for the purpose of reducing the perceived temperature by increasing evaporation of perspiration on the skin of the occupants. Because hot air rises, ceiling fans may be used to keep a room warmer in the winter by circulating the warm stratified air from the ceiling to the ...

  3. Mechanical systems drawing - Wikipedia

    en.wikipedia.org/wiki/Mechanical_systems_drawing

    Exhaust fans; Symbol legend, general notes and specific key notes; Heating and/or cooling load summary; Connection to existing systems; Demolition of part or all of existing systems; Smoke detector and firestat re-ducting; Thermostat programming; Heat loss and heat gain calculations; Special condition [1]

  4. Ceiling fan - Wikipedia

    en.wikipedia.org/wiki/Ceiling_fan

    Another concern with installing a ceiling fan relates to the height of the blades relative to the floor. Building codes throughout the United States prohibit residential ceiling fans from being mounted with the blades closer than seven feet from the floor; [22] this sometimes proves, however, to not be high enough. If a ceiling fan is turned on ...

  5. Fan (machine) - Wikipedia

    en.wikipedia.org/wiki/Fan_(machine)

    Five-blade or six-blade designs are rare. The materials from which the components are made, such as brass, are important factors in fan desirability. A ceiling fan is a fan suspended from the ceiling of a room. Most ceiling fans rotate at relatively low speeds and do not have blade guards because they are inaccessible and unwieldy.

  6. Dianna Cowern - Wikipedia

    en.wikipedia.org/wiki/Dianna_Cowern

    Dianna Leilani Cowern (born May 4, 1989) is an American science communicator.She is a YouTuber; she uploads videos to her YouTube channel Physics Girl explaining various physical phenomena.

  7. Whole-house fan - Wikipedia

    en.wikipedia.org/wiki/Whole-house_fan

    A typical whole-house fan, with louvers closed when not operating. A whole house fan is a type of fan, commonly venting into a building's attic, designed to circulate air in an entire house or other building. The fan removes hot air from the building and draws in cooler outdoor air through windows and other openings.

  8. Kevin Rudd - Wikipedia

    en.wikipedia.org/wiki/Kevin_Rudd

    A$4 billion Energy Efficient Homes Package was also launched, containing a Home Insulation Program (HIP) which provided $1,600 worth of assistance to owner-occupiers to install ceiling insulation in existing homes.

  9. Floor and ceiling functions - Wikipedia

    en.wikipedia.org/wiki/Floor_and_ceiling_functions

    Given real numbers x and y, integers m and n and the set of integers, floor and ceiling may be defined by the equations ⌊ ⌋ = {}, ⌈ ⌉ = {}. Since there is exactly one integer in a half-open interval of length one, for any real number x, there are unique integers m and n satisfying the equation

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