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2. Furnace (central heating) - Wikipedia

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

   By comparison, most modern "warm air" furnaces typically use a fan to circulate air to the rooms of house and pull cooler air back to the furnace for reheating; this is called forced-air heat. Because the fan easily overcomes the resistance of the ductwork, the arrangement of ducts can be far more flexible than the octopus of old.

3. Bottom-blown oxygen converter - Wikipedia

   en.wikipedia.org/wiki/Bottom-blown_oxygen_converter

   higher recoveries of precious metals – due to changes in the way the BBOC is operated compare to reverberatory furnaces, notably in being able to use deeper layers of slag, there is an increase in the recovery of precious metals compared to the reverberatory furnaces. [6] Replacement of reverberatory furnaces with BBOC furnaces saw the direct ...

4. Single-ended recuperative burner - Wikipedia

   en.wikipedia.org/wiki/Single-ended_recuperative...

   A single-ended recuperative (SER) burner is a type of gas burner used in high-temperature industrial kilns and furnaces. These burners are used where indirect heating is required, e.g. where the products of combustion are not allowed to combine with the atmosphere of the furnace. The typical design is a tubular (pipe) shape with convoluted ...

5. Pellet fuel - Wikipedia

   en.wikipedia.org/wiki/Pellet_fuel

   This is an important consideration when buying a pellet stove, furnace, pellet baskets or other devices known in the industry as Bradley Burners. [67] However, current pellet production is increasing and there are plans to bring several new pellet mills online in the US in 2008–2009. [ 68 ] [

6. New efficiency standards for home furnaces unveiled [Video] - AOL

   www.aol.com/news/biden-administration-unveils...

   Close-up of flames on a natural gas furnace burner in the HVAC system of a suburban home in San Ramon, Calif., Dec. 29, 2019. ... “The new standard would reduce needless costs and greenhouse gas ...

7. LO-NOx burner - Wikipedia

   en.wikipedia.org/wiki/LO-NOx_burner

   It is well established that conventional "blue flame" or bunsen gas burners produce oxides of nitrogen at levels of 30-50 nanograms per joule [5] [6] and are as such not considered to have potential for NO x reduction. Surface combustion burners or radiant tile burners in comparison produce nitrogen oxides' levels 60-70% less. [6]