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  2. Displacement ventilation - Wikipedia

    en.wikipedia.org/wiki/Displacement_ventilation

    A typical displacement ventilation system, such as one in an office space, supplies conditioned cold air from an air handling unit (AHU) through a low induction air diffuser. Diffuser types vary by applications. Diffusers can be located against a wall ("wall-mounted"), at the corner of a room ("corner-mounted"), or above the floor but not ...

  3. Mixed-mode ventilation - Wikipedia

    en.wikipedia.org/wiki/Mixed-mode_ventilation

    Mixed-mode ventilation. Mixed-mode ventilation is a hybrid approach to space conditioning that uses a combination of natural ventilation from operable windows (either manually or automatically controlled), and mechanical systems that include air distribution equipment and refrigeration equipment for cooling. A well-designed mixed-mode building ...

  4. Mechanical ventilation - Wikipedia

    en.wikipedia.org/wiki/Mechanical_ventilation

    Mechanical ventilation. Mechanical ventilation or assisted ventilation is the medical term for using a machine called a ventilator to fully or partially provide artificial ventilation. Mechanical ventilation helps move air into and out of the lungs, with the main goal of helping the delivery of oxygen and removal of carbon dioxide.

  5. Passive ventilation - Wikipedia

    en.wikipedia.org/wiki/Passive_ventilation

    Passive ventilation is the process of supplying air to and removing air from an indoor space without using mechanical systems. It refers to the flow of external air to an indoor space as a result of pressure differences arising from natural forces. There are two types of natural ventilation occurring in buildings: wind driven ventilation and ...

  6. Ventilator - Wikipedia

    en.wikipedia.org/wiki/Ventilator

    Ventilator. A ventilator is a type of breathing apparatus, a class of medical technology that provides mechanical ventilation by moving breathable air into and out of the lungs, to deliver breaths to a patient who is physically unable to breathe, or breathing insufficiently.

  7. Room air distribution - Wikipedia

    en.wikipedia.org/wiki/Room_air_distribution

    Displacement ventilation systems supply air directly to the occupied zone.The air is supplied at low velocities to cause minimal induction and mixing. This system is used for ventilation and cooling of large high spaces, such as auditorium and atria, where energy may be saved if only the occupied zone is treated rather than trying to control the conditions in the entire space.

  8. Negative pressure ventilator - Wikipedia

    en.wikipedia.org/wiki/Negative_pressure_ventilator

    The iron lung, also known as the tank ventilator, Drinker tank or Emerson tank, was the first common pure-NPV device when it was developed in the 1920s by Drinker, Shaw and Mason. It is a large, sealed horizontal cylinder (or "tank") in which the patient lies, with their head protruding from a sealed opening at one end of the tank. An air pump ...

  9. Air handler - Wikipedia

    en.wikipedia.org/wiki/Air_handler

    Air handler. An air handling unit; air flow is from the right to left in this case. Some AHU components shown are. 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 ( HVAC) system. [1] An air handler is usually a large metal ...

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