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  2. Register (air and heating) - Wikipedia

    en.wikipedia.org/wiki/Register_(air_and_heating)

    A register is a grille with moving parts, capable of being opened and closed and the air flow directed, which is part of a building's heating, ventilation, and air conditioning (HVAC) system. The placement and size of registers is critical to HVAC efficiency. Register dampers are also important, and can serve a safety function.

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  6. Cleanroom - Wikipedia

    en.wikipedia.org/wiki/Cleanroom

    The air then leaves through exhaust grills. The advantage of this approach is the lower cost. The disadvantages are comparatively shorter HEPA fan filter life, worse particle counts than a recirculating cleanroom, and that it cannot accommodate air conditioning.

  7. Ventilator - Wikipedia

    en.wikipedia.org/wiki/Ventilator

    In its simplest form, a modern positive pressure ventilator, consists of a compressible air reservoir or turbine, air and oxygen supplies, a set of valves and tubes, and a disposable or reusable "patient circuit". The air reservoir is pneumatically compressed several times a minute to deliver room-air, or in most cases, an air/oxygen mixture to ...

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  9. Sustainable architecture - Wikipedia

    en.wikipedia.org/wiki/Sustainable_architecture

    An exhaust air heat pump uses electricity to extract heat from exhaust air leaving a building, redirecting it towards DHW (domestic hot water), space heating, and warming supply air. In colder countries, an EAHP may be able to recover around 2 - 3 times more energy than an air-to-air exchange system. [ 28 ]