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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space. The control circuit in a household HVAC installation.

  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. Air preheater - Wikipedia

    en.wikipedia.org/wiki/Air_preheater

    There are two types of air preheaters for use in steam generators in thermal power stations: One is a tubular type built into the boiler flue gas ducting, and the other is a regenerative air preheater. [1] [2] [7] These may be arranged so the gas flows horizontally or vertically across the axis of rotation.

  5. List of DIN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_DIN_standards

    replacement DIN 3000, DIN 3017-1: Hose clamps with worm gear drive; shape A, DIN 3017-2: Hose clamps – Part 2: Clamps with fastening lugs, DIN 3017-3: Hose clamps – Part 3: Bolt clamps, DIN 3017-4: Hose clamps – Part 4: Technical delivery conditions, DIN 3017-5: Hose clamps – Part 5: Wide strip hose clamps with fastening lugs; Types D ...

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  7. Ground-coupled heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Ground-coupled_heat_exchanger

    However, the earth can be used to partially cool and dehumidify the replacement fresh air intake for passive-solar thermal buffer zone [5] areas like the laundry room, or a solarium / greenhouse, especially those with a hot tub, swim spa, or indoor swimming pool, where warm humid air is exhausted in the summer, and a supply of cooler drier ...