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Experimental Investigation of an Air-Staged Swirl Burner with Hemispherical Stabilizer for Low-NO x Combustion.

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Title: Experimental Investigation of an Air-Staged Swirl Burner with Hemispherical Stabilizer for Low-NO x Combustion.
Authors: Sapargaliyeva, Aigerim Nurzhanovna1 (AUTHOR), Dostiyarov, Abay Mukhamediyarovich2 (AUTHOR), Umyshev, Dias Raybekovich3 (AUTHOR) d.umyshev@satbayev.university, Baidalina, Ainura Kazhiakparovna4 (AUTHOR), Begimbetova, Ainur Serikbaevna5 (AUTHOR), Sarakeshova, Nurbubi Nurkenovna1,6 (AUTHOR), Ozhikenova, Zhannat Farhatovna1,6 (AUTHOR)
Source: Energies (19961073). Feb2026, Vol. 19 Issue 4, p897. 15p.
Subject Terms: *Liquefied petroleum gas, *Combustion engineering, *Flame, *Flue gases, *Atmospheric carbon monoxide, *Abatement (Atmospheric chemistry)
Abstract: This study investigates the emission characteristics and flame behavior of an air-staged swirl burner operating on LPG. The burner is equipped with a 45° vane swirler and an adjustable secondary-air section. Experiments were conducted at air velocities ranging from 20 to 43 m/s using a Testo 350 gas analyzer, while temperature measurements were obtained with thermocouples positioned 90 mm downstream of the burner exit. The results show that increasing the secondary-air opening leads to a monotonic decrease in the mean exit temperature and NOx formation over the entire velocity range. In contrast, CO concentrations increase at higher air velocities and larger secondary-air fractions due to reduced residence time and partial quenching of the reaction zone. The fully staged configuration (100%) achieved the lowest NOx levels (≤3 ppm) at 20 m/s, whereas the non-staged case resulted in the highest temperatures and NO emissions. Overall, the experimental results demonstrate that a moderate secondary-air opening provides the best compromise between low NOx emissions and acceptable CO levels for compact LPG-fired swirl combustors. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 191973317
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PubTypeId: academicJournal
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  Label: Title
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  Data: Experimental Investigation of an Air-Staged Swirl Burner with Hemispherical Stabilizer for Low-NO x Combustion.
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  Data: <searchLink fieldCode="AR" term="%22Sapargaliyeva%2C+Aigerim+Nurzhanovna%22">Sapargaliyeva, Aigerim Nurzhanovna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dostiyarov%2C+Abay+Mukhamediyarovich%22">Dostiyarov, Abay Mukhamediyarovich</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Umyshev%2C+Dias+Raybekovich%22">Umyshev, Dias Raybekovich</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> d.umyshev@satbayev.university</i><br /><searchLink fieldCode="AR" term="%22Baidalina%2C+Ainura+Kazhiakparovna%22">Baidalina, Ainura Kazhiakparovna</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Begimbetova%2C+Ainur+Serikbaevna%22">Begimbetova, Ainur Serikbaevna</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sarakeshova%2C+Nurbubi+Nurkenovna%22">Sarakeshova, Nurbubi Nurkenovna</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ozhikenova%2C+Zhannat+Farhatovna%22">Ozhikenova, Zhannat Farhatovna</searchLink><relatesTo>1,6</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Feb2026, Vol. 19 Issue 4, p897. 15p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Liquefied+petroleum+gas%22">Liquefied petroleum gas</searchLink><br />*<searchLink fieldCode="DE" term="%22Combustion+engineering%22">Combustion engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Flame%22">Flame</searchLink><br />*<searchLink fieldCode="DE" term="%22Flue+gases%22">Flue gases</searchLink><br />*<searchLink fieldCode="DE" term="%22Atmospheric+carbon+monoxide%22">Atmospheric carbon monoxide</searchLink><br />*<searchLink fieldCode="DE" term="%22Abatement+%28Atmospheric+chemistry%29%22">Abatement (Atmospheric chemistry)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the emission characteristics and flame behavior of an air-staged swirl burner operating on LPG. The burner is equipped with a 45° vane swirler and an adjustable secondary-air section. Experiments were conducted at air velocities ranging from 20 to 43 m/s using a Testo 350 gas analyzer, while temperature measurements were obtained with thermocouples positioned 90 mm downstream of the burner exit. The results show that increasing the secondary-air opening leads to a monotonic decrease in the mean exit temperature and NOx formation over the entire velocity range. In contrast, CO concentrations increase at higher air velocities and larger secondary-air fractions due to reduced residence time and partial quenching of the reaction zone. The fully staged configuration (100%) achieved the lowest NOx levels (≤3 ppm) at 20 m/s, whereas the non-staged case resulted in the highest temperatures and NO emissions. Overall, the experimental results demonstrate that a moderate secondary-air opening provides the best compromise between low NOx emissions and acceptable CO levels for compact LPG-fired swirl combustors. [ABSTRACT FROM AUTHOR]
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        Value: 10.3390/en19040897
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        Text: English
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        PageCount: 15
        StartPage: 897
    Subjects:
      – SubjectFull: Liquefied petroleum gas
        Type: general
      – SubjectFull: Combustion engineering
        Type: general
      – SubjectFull: Flame
        Type: general
      – SubjectFull: Flue gases
        Type: general
      – SubjectFull: Atmospheric carbon monoxide
        Type: general
      – SubjectFull: Abatement (Atmospheric chemistry)
        Type: general
    Titles:
      – TitleFull: Experimental Investigation of an Air-Staged Swirl Burner with Hemispherical Stabilizer for Low-NO x Combustion.
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            NameFull: Sapargaliyeva, Aigerim Nurzhanovna
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            NameFull: Baidalina, Ainura Kazhiakparovna
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            NameFull: Begimbetova, Ainur Serikbaevna
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            – D: 15
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 19
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