Effects of Oxygen-Enhanced Combustion Methods on Combustion Characteristics of Non-Premixed Swirling Flames

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dc.contributor.authorSkryja, Pavelcs
dc.contributor.authorHudák, Igorcs
dc.contributor.authorBojanovský, Jiřícs
dc.contributor.authorJegla, Zdeněkcs
dc.contributor.authorKorček, Lubomírcs
dc.coverage.issue6cs
dc.coverage.volume15cs
dc.date.accessioned2022-03-30T06:54:11Z
dc.date.available2022-03-30T06:54:11Z
dc.date.issued2022-03-21cs
dc.description.abstractThe objective of the present study was to experimentally investigate and compare the characteristics of three oxygen-enhanced combustion (OEC) methods; premix enrichment (PE), air-oxy/fuel combustion (AO), and additionally also oxygen lancing (OL) method. The overall oxygen concentration varied from 21% to 38%. Combustion tests were carried out using the gas burner with the thermal input of 750 kW fired by natural gas. The characteristics of OEC methods, such as the concentration of nitrogen oxides and carbon monoxide in flue gas, in-flame temperatures distribution in the horizontal symmetry plane of the combustion chamber, heat flux to the combustion chamber wall, flue gas temperature, and the stability of flame were investigated. NOx emissions increased by more than 40 times and by 20 times for the PE method. The tests using the AO and OL methods with NOx emissions below 150 mg/Nm3 at all oxygen concentrations showed significantly better results. For all OEC methods, radiative heat transfer increased with increasing oxygen concentration. The available heat was 20% higher at 38% O2 than at 21% O2. The flue gas temperature decreased with increasing oxygen concentration, which was affected by a decrease in N2 concentration in the oxidizer and a simultaneous increase in radiant heat fluxen
dc.formattextcs
dc.format.extent1-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationENERGIES. 2022, vol. 15, issue 6, p. 1-21.en
dc.identifier.doi10.3390/en15062292cs
dc.identifier.issn1996-1073cs
dc.identifier.other177405cs
dc.identifier.urihttp://hdl.handle.net/11012/204067
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofENERGIEScs
dc.relation.urihttps://www.mdpi.com/1996-1073/15/6/2292cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1073/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectoxygen-enhanced combustionen
dc.subjectnitrogen oxidesen
dc.subjectheat fluxen
dc.subjectin-flame temperatureen
dc.subjectflame stabilityen
dc.subjectoxygen lancing methoden
dc.titleEffects of Oxygen-Enhanced Combustion Methods on Combustion Characteristics of Non-Premixed Swirling Flamesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-177405en
sync.item.dbtypeVAVen
sync.item.insts2023.02.08 12:52:42en
sync.item.modts2023.02.08 12:14:30en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav procesního inženýrstvícs
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