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  2. 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 ...

  3. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    HVAC (heating, ventilation, and air conditioning) is a major sub discipline of mechanical engineering. The goal of HVAC design is to balance indoor environmental comfort with other factors such as installation cost, ease of maintenance, and energy efficiency. The discipline of HVAC includes a large number of specialized terms and acronyms, many ...

  4. 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.

  5. Should You Close Vents In Unused Rooms During Winter? An HVAC ...

    www.aol.com/lifestyle/close-vents-unused-rooms...

    HVAC systems are designed to maintain a specific and balanced airflow known as CFM, or cubic feet per minute, throughout a home. Closing vents can increase pressure in the ductwork, potentially ...

  6. How Often Should You Clean Your Air Ducts? Experts Explain - AOL

    www.aol.com/often-clean-air-ducts-experts...

    Yes, cleaning air ducts can ensure the HVAC system is working efficiently, can reduce your energy bill, decrease dust, debris and mold in the home. Will cleaning my air ducts make my house less dusty?

  7. Variable air volume - Wikipedia

    en.wikipedia.org/wiki/Variable_air_volume

    Dual duct systems provide cool air in one duct and warm air in a second duct to provide an appropriate temperature of mixed supply air for any zone. An extra duct, however, is cumbersome and expensive. Reheating the air from a single duct, using electric or hot water heating, is often a more cost-effective solution. [12]

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