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flue gas

British  

noun

  1. the smoke in the uptake of a boiler fire: it consists mainly of carbon dioxide, carbon monoxide, and nitrogen

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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The advantage became even clearer when researchers used a simulated flue gas containing 15% CO2, 8% oxygen gas, and 77% nitrogen gas.

From Science Daily • Jan. 29, 2026

It also makes up part of the flue gas emitted from smokestacks at coal plants.

From Washington Times • Dec. 11, 2019

“Over the plant’s lifetime, the all-in cost is $600 per ton of CO2, roughly eight times higher than the cost per ton to capture CO2 from the flue gas of a coal power plant.”

From Scientific American • Nov. 13, 2019

Not only does coal release twice as much carbon pollution as natural gas, but that CO2 also makes up just 14% of the flue gas from a conventional power plant.

From Science Magazine • May 24, 2017

Therefore, applying this data to standard efficiency charts will give a true indication of flue gas loss.

From Installation and Operation Instructions For Custom Mark III CP Series Oil Fired Unit by Anonymous