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  2. Duct (industrial exhaust) - Wikipedia

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

    Industrial exhaust ducts are pipe systems that connect hoods to industrial chimneys through other components of exhaust systems like fans, collectors, etc. Ducts are low-pressure pneumatic conveyors to convey dust, particles, shavings, fumes, or chemical hazardous components from air in the vicinity to a shop floor or any other specific locations like tanks, sanding machines, or laboratory hoods.

  3. Pressurisation ductwork - Wikipedia

    en.wikipedia.org/wiki/Pressurisation_ductwork

    Pressurisation ductwork is a passive fire protection system. It is used to supply fresh air to any area of refuge , designated emergency evacuation or egress route. Purpose

  4. Ductwork airtightness - Wikipedia

    en.wikipedia.org/wiki/Ductwork_airtightness

    There are two major systems to classify ductwork airtightness, one based on European standards, the other based on ASHRAE standard 90.1-2010.Both are based on the leakage airflow rate at a given ductwork pressure divided by the product of the ductwork surface area and the same ductwork pressure raised to the power 0.65.

  5. Duct (flow) - Wikipedia

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

    A duct system often begins at an air handler. The blowers in the air handler can create substantial vibration, and the large area of the duct system would transmit this noise and vibration to the inhabitants of the building. To avoid this, vibration isolators (flexible sections) are normally inserted into the duct immediately before and after ...

  6. College basketball player collapses and dies after workout

    www.aol.com/college-basketball-player-collapses...

    A basketball player at Alabama's University of Mobile is dead after collapsing after a gym workout, according to his coach. Kaiden Francis was a freshman basketball player from Fort Lauderdale ...

  7. DNA confirms man who had passed polygraph test as suspected ...

    www.aol.com/dna-confirms-man-had-passed...

    After 45 years, authorities in California were finally able to tell the Gonzalez family who they believe killed their loved one. The Riverside County Sheriff’s Office used DNA and forensic ...

  8. Man who attacked, then rescued, ex-wife hoped to be her hero

    www.aol.com/news/man-attacked-then-rescued-ex...

    Her assailant strangled her nearly unconscious twice. Morgan Metzer: It's the worst feeling in the world to think you're dying. And you feel like you're going to be tortured beforehand.

  9. Duct leakage testing - Wikipedia

    en.wikipedia.org/wiki/Duct_leakage_testing

    A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air-conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow.

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