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  2. Underfloor air distribution - Wikipedia

    en.wikipedia.org/wiki/Underfloor_air_distribution

    UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air to supply outlets (usually floor diffusers), located at or near floor level within the occupied space. Air returns from the room at ceiling level or the maximum allowable height above the occupied zone. [1]

  3. Passive ventilation - Wikipedia

    en.wikipedia.org/wiki/Passive_ventilation

    = cross-sectional area of opening, ft² (assumes equal area for inlet and outlet) C d = Discharge coefficient for opening (typical value is 0.65) g = gravitational acceleration, around 32.2 ft/s² on Earth H d = Height from midpoint of lower opening to midpoint of upper opening, ft T I = Average indoor temperature between the inlet and outlet ...

  4. Plenum space - Wikipedia

    en.wikipedia.org/wiki/Plenum_space

    Space between the structural ceiling and the dropped ceiling or under a raised floor is typically considered plenum; however, some drop-ceiling designs create a tight seal that does not allow for airflow and therefore may not be considered a plenum air-handling space. [1] [2]

  5. Room air distribution - Wikipedia

    en.wikipedia.org/wiki/Room_air_distribution

    The displacement outlets are usually located at or near the floor with the air supply designed so the air flows smoothly across the floor. Where there is a heat source (such as people, lighting, computers, electrical equipment, etc.) the air will rise, pulling the cool supply air up with it and moving contaminants and heat from the occupied ...

  6. 50 Times Cheap Fixes Had A Major Impact On Home Life - AOL

    www.aol.com/55-people-share-relatively-cheap...

    "Electrical work, major plumbing renovations, and large-scale structural changes are best left to experts with the requisite skills and experience." #16. The fence I wanted would have been about ...

  7. BS 7671 - Wikipedia

    en.wikipedia.org/wiki/BS_7671

    electric vehicle charging; operating and maintenance gangways; temporary installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses including professional stage and broadcast applications; floor and ceiling heating systems; onshore units of electrical shore connections for inland navigation vessels.

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