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  2. Flue - Wikipedia

    en.wikipedia.org/wiki/Flue

    A seven-flue chimney in a four-storey Georgian house in London, showing alternative methods of sweeping. A flue is a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Historically the term flue meant the chimney itself. [1]

  3. Flue gas - Wikipedia

    en.wikipedia.org/wiki/Flue_gas

    Flue gas from London's Bankside Power Station, 1975. Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases, as from a fireplace, oven, furnace, boiler or steam generator. It often refers to the exhaust gas of combustion at power plants. Technology is available to remove pollutants from ...

  4. Forced-air gas - Wikipedia

    en.wikipedia.org/wiki/Forced-air_gas

    A condensing forced-air furnace; flue pipes are plastic, not metal, because of the low waste-gas temperature. Plastic outlet for a condensing natural gas hot air furnace. Not all the water vapor is condensed; some freezes at the outlet. This vent contains a coaxial combustion air inlet pipe.

  5. 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 ...

  6. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Waste gas and heat are mechanically ventilated through either metal flue pipes or polyvinyl chloride (PVC) pipes that can be vented through the side or roof of the structure. Fuel efficiency in a gas furnace is measured in AFUE (Annual Fuel Utilization Efficiency).

  7. Flue pipe - Wikipedia

    en.wikipedia.org/wiki/Flue_pipe

    A flue pipe (also referred to as a labial pipe) is an organ pipe that produces sound through the vibration of air molecules, in the same manner as a recorder or a whistle, in a pipe organ. Air under pressure (called wind ) is driven through a flue and against a sharp lip called a labium , causing the column of air in the pipe to resonate at a ...

  8. Chimney - Wikipedia

    en.wikipedia.org/wiki/Chimney

    Today's central heating systems have made chimney placement less critical, and the use of non-structural gas vent pipe allows a flue gas conduit to be installed around obstructions and through walls. Chimney in North London Flue. Most modern high-efficiency heating appliances do not require a chimney.

  9. Glossary of boiler terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_boiler_terms

    A boiler where the primary heating surface is tubes with hot gas flowing inside and water outside. See also: water-tube boiler. Flash steam Flue A large fire tube, either used as the main heating surface in a flued boiler, or used as enlarged firetubes in a locomotive-style boiler where these contain the superheater elements. Flued boiler ...

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