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  2. Automatic bleeding valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_bleeding_valve

    As these need to operate in any orientation, they use a different mechanism rather than a float. The hygroscopic vent system uses hygroscopic cellulose fibre discs. [7] These are small discs of material that expand when wet and shrink if warm and dry. A dry valve acts as an air vent until a dribble of water passes through it and swells the ...

  3. EgyptAir Flight 667 - Wikipedia

    en.wikipedia.org/wiki/EgyptAir_Flight_667

    The EgyptAir Boeing 777 was parked at gate F7 of Terminal 3 at Cairo airport on 29 July 2011, with preparations underway to operate flight 667. As the last few of the 307 passengers were boarding, the flight crew in the cockpit heard a bang and a hissing sound coming from the right side console, immediately followed by smoke and flames.

  4. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1] An air handler is usually a large metal box containing a blower , furnace or A/C elements, filter racks or chambers, sound attenuators , and dampers . [ 2 ]

  5. The Hum - Wikipedia

    en.wikipedia.org/wiki/The_Hum

    A steel mill operated by U.S. Steel was the possible cause, but officials stated that no new equipment had been installed or activated around the time that the noise became noticeable. When the blast furnaces were deactivated in April 2020, the noise went away as well. [13] [14]

  6. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    After or during sleep, occupants experience headaches, nasal congestion, or other sinus problems. Rooms in the house have little or no air flow coming from the vents. Occupants are constantly getting sick or are experiencing more allergies than usual. There is a musty or stale odor when turning on the furnace or air conditioner.

  7. Ex-Abercrombie & Fitch CEO has dementia, lawyers say - AOL

    www.aol.com/ex-abercrombie-fitch-ceo-dementia...

    The former CEO of Abercrombie & Fitch (A&F) has dementia and late onset Alzheimer's disease, his legal team has said in a court document filed in New York. Lawyers for Mike Jeffries have requested ...

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