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  2. Duct (flow) - Wikipedia

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

    Ducts, especially in homes, must often allow air to travel vertically within relatively thin walls. These vertical ducts are called stacks and are formed with either very wide and relatively thin rectangular sections or oval sections.

  3. 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%.

  4. 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]

  5. 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.

  6. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  7. Windcatcher - Wikipedia

    en.wikipedia.org/wiki/Windcatcher

    Vertical temperature gradient caused by stable stratification of air inside a room. Note hot air rising from the person. Buoyancy is usually not the main effect driving windcatcher air circulation [2] during the day. In a windless environment, a windcatcher can still function using the stack effect. [16]

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