RT Journal Article SR Electronic A1 Sikora, Kamil T1 Combustion of Natural Gas without the Presence of Nitrogen JF Acta Mechanica Slovaca YR 2024 VO 28 IS 4 SP 38 OP 42 DO 10.21496/ams.2024.021 UL https://www.actamechanica.sk/artkey/ams-202404-0004.php AB The following article deals with the consequences of burning natural gas without the presence of atmospheric nitrogen. It is primarily a change in the volumetric flow of flue gas in the exhaust system of the furnace. With the help of modified stoichiometric tables and the flow equation in the chimney, the difference in draft ratios of the furnace draft, when switching from conventional burners to oxygen burners, is demonstrated here on a specific industrial unit.