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Flue/Stack gas difference

Flue/Stack gas difference

(OP)
Very basic question. Is there a difference between flue gas and stack gas? I read in some old notes that composition of flue gas means on a dry basis, and composition of stack gas means on wet basis. Is it true? I cannot find this difference in definition anywhere else.
Thank you.
C.

RE: Flue/Stack gas difference

Flue gas is the gas exiting to the atmosphere via a flue, which is a pipe or channel for conveying exhaust gases from a fireplace, oven, furnace, boiler or steam generator. Quite often, the flue gas refers to the combustion exhaust gas produced at power plants. Its composition depends on what is being burned, but it will usually consist of mostly nitrogen (typically more than two-thirds) derived from the combustion air, carbon dioxide (CO2), and water vapor as well as excess oxygen (also derived from the combustion air). It further contains a small percentage of a number of pollutants, such as particulate matter (like soot), carbon monoxide, nitrogen oxides, and sulfur oxides.


stack gas - noun
Definition of STACK GAS
: the gas passing through a smokestack — compare flue gas

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