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  2. Passive ventilation - Wikipedia

    en.wikipedia.org/wiki/Passive_ventilation

    Both supply and exhaust happened through an unconditioned attic space, with exhaust air being extracted at ceiling height and air being supplied at floor level through a vertical duct. The device was found to provide sufficient ventilation air flow for a single family home and heat recovery with an efficiency around 40%.

  3. Duct (flow) - Wikipedia

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

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  4. Plenum space - Wikipedia

    en.wikipedia.org/wiki/Plenum_space

    Vertical section through a commercial building using HVAC plenum instead of airspace plenum. When both the supply and return ducts are constructed in this manner, it is possible to insulate the ducts and the dropped ceiling so that the upper airspace is not heated or cooled, increasing energy efficiency.

  5. Ventilation (architecture) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(architecture)

    Ducts for transporting the air; An air-cleaning device that removes/minimizes the contaminant; A fan that moves the air through the system; An exhaust stack through which the contaminated air is discharged [35]

  6. Stack effect - Wikipedia

    en.wikipedia.org/wiki/Stack_effect

    This vertical movement of air creates a natural ventilation system that can significantly reduce indoor temperatures. Combining the stack effect with cross ventilation , where airflow moves across the building from one side to the other, can enhance the overall cooling effect.

  7. Today's Wordle Hint, Answer for #1274 on Saturday, December ...

    www.aol.com/todays-wordle-hint-answer-1274...

    If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1274 ahead. Let's start with a few hints.

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