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Influence of equivalence ratio on emissions in meso-scale vortex combustor.

The miniaturization of small-size power supply systems with high energy density is becoming essential nowadays. The demand for compact, lightweight power has motivated researchers to actively develop the small reacting system. However, reducing size in the combustion system has encountered some tech...

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Main Authors: Asmayou, Ali Houssein, Abdul Wahid, Mazlan, Abdulrahman, Mohammed Bashir, Mohd. Sies, Mohsin
Format: Conference or Workshop Item
Published: 2023
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TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/107383/
http://dx.doi.org/10.1063/5.0136483
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spelling my.utm.1073832024-09-11T04:03:19Z http://eprints.utm.my/107383/ Influence of equivalence ratio on emissions in meso-scale vortex combustor. Asmayou, Ali Houssein Abdul Wahid, Mazlan Abdulrahman, Mohammed Bashir Mohd. Sies, Mohsin TJ Mechanical engineering and machinery The miniaturization of small-size power supply systems with high energy density is becoming essential nowadays. The demand for compact, lightweight power has motivated researchers to actively develop the small reacting system. However, reducing size in the combustion system has encountered some technical challenges. This study has also been motivated by the speedy development of mesoscale electrical and mechanical systems. This paper presents biogas' numerical flame characteristics (60% CH4 -40% CO2) in an asymmetric mesoscale vortex combustor. The results indicate that the lean equivalence ratio limit was Ø 0.51 for all Re, the stable range is large at low Re (0.51< Ø <1.86 at Re 2500), decreasing with increasing Re until (0.51< Ø <0.56) at Re 7840. A strong vortex forms a stable zone for the flame and demonstrates the high stability of biogas flame for the mesoscale combustor. Flame stability in mesoscale vortex combustion has been due to two important effects; the strong tangential vortex controls the flame field and vortex influence. The rich equivalence ratio at Ø 1.86 was recorded as the highest peak temperature at 1870 K. It produced the highest value for CO and NOx gases emissions, at 5.65 e-04 ppm and 10.06 ppm, respectively. Meanwhile, the lean equivalence ratio, Ø 0.56, recorded the lowest peak temperature at 1533 K but interestingly managed to produce the lowest CO and NOx gas emissions value, at 1.43 e-07 ppm 1.2132 ppm, respectively. Thus, it concluded that the higher ratio of air in the fuel, the lower the temperature and emissions. 2023-07-20 Conference or Workshop Item PeerReviewed Asmayou, Ali Houssein and Abdul Wahid, Mazlan and Abdulrahman, Mohammed Bashir and Mohd. Sies, Mohsin (2023) Influence of equivalence ratio on emissions in meso-scale vortex combustor. In: 12th International Meeting on Advances in Thermofluids, IMAT 2021, 1 November 2021, Johor Bahru, Johor, Malaysia. http://dx.doi.org/10.1063/5.0136483
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Asmayou, Ali Houssein
Abdul Wahid, Mazlan
Abdulrahman, Mohammed Bashir
Mohd. Sies, Mohsin
Influence of equivalence ratio on emissions in meso-scale vortex combustor.
description The miniaturization of small-size power supply systems with high energy density is becoming essential nowadays. The demand for compact, lightweight power has motivated researchers to actively develop the small reacting system. However, reducing size in the combustion system has encountered some technical challenges. This study has also been motivated by the speedy development of mesoscale electrical and mechanical systems. This paper presents biogas' numerical flame characteristics (60% CH4 -40% CO2) in an asymmetric mesoscale vortex combustor. The results indicate that the lean equivalence ratio limit was Ø 0.51 for all Re, the stable range is large at low Re (0.51< Ø <1.86 at Re 2500), decreasing with increasing Re until (0.51< Ø <0.56) at Re 7840. A strong vortex forms a stable zone for the flame and demonstrates the high stability of biogas flame for the mesoscale combustor. Flame stability in mesoscale vortex combustion has been due to two important effects; the strong tangential vortex controls the flame field and vortex influence. The rich equivalence ratio at Ø 1.86 was recorded as the highest peak temperature at 1870 K. It produced the highest value for CO and NOx gases emissions, at 5.65 e-04 ppm and 10.06 ppm, respectively. Meanwhile, the lean equivalence ratio, Ø 0.56, recorded the lowest peak temperature at 1533 K but interestingly managed to produce the lowest CO and NOx gas emissions value, at 1.43 e-07 ppm 1.2132 ppm, respectively. Thus, it concluded that the higher ratio of air in the fuel, the lower the temperature and emissions.
format Conference or Workshop Item
author Asmayou, Ali Houssein
Abdul Wahid, Mazlan
Abdulrahman, Mohammed Bashir
Mohd. Sies, Mohsin
author_facet Asmayou, Ali Houssein
Abdul Wahid, Mazlan
Abdulrahman, Mohammed Bashir
Mohd. Sies, Mohsin
author_sort Asmayou, Ali Houssein
title Influence of equivalence ratio on emissions in meso-scale vortex combustor.
title_short Influence of equivalence ratio on emissions in meso-scale vortex combustor.
title_full Influence of equivalence ratio on emissions in meso-scale vortex combustor.
title_fullStr Influence of equivalence ratio on emissions in meso-scale vortex combustor.
title_full_unstemmed Influence of equivalence ratio on emissions in meso-scale vortex combustor.
title_sort influence of equivalence ratio on emissions in meso-scale vortex combustor.
publishDate 2023
url http://eprints.utm.my/107383/
http://dx.doi.org/10.1063/5.0136483
_version_ 1811681172758986752
score 13.211869

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