Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend
Hydrocarbon/Nitrous Oxide fuel blends, commonly called HyNOx or NOFBX, are currently being researched for aeronautic and aerospace propellant applications due to its good performance and economy. However, research on the fuel blend is relatively scant, especially regarding its emission characteristi...
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| author | Boj N. Villanueva Po-Hung Lin Yueh-Heng Li Jaime P. Honra |
| author_facet | Boj N. Villanueva Po-Hung Lin Yueh-Heng Li Jaime P. Honra |
| author_sort | Boj N. Villanueva |
| collection | DOAJ |
| description | Hydrocarbon/Nitrous Oxide fuel blends, commonly called HyNOx or NOFBX, are currently being researched for aeronautic and aerospace propellant applications due to its good performance and economy. However, research on the fuel blend is relatively scant, especially regarding its emission characteristics, as the composition may produce high NOx emissions, which are harmful to both human society and the environment. This study sought to utilize Nanosecond Pulsed Dielectric Barrier Discharge plasma as an emission control mechanism as not only has it found success as a pollution control mechanism, but also as a combustion enhancement one. Chemiluminescence imaging was used to observe the changes in radical species emissions for a laminar premixed CH4/N2O/Ar flame under plasma actuation and emission results were measured with a flue gas analyzer. It was found that once the input voltage crossed a critical value, the chemiluminescent concentrations of CH* and NH2* saw a significant rise, leading non-monotonic increase in the concentration of NOx with this phenomenon lessening as equivalence ratios increased, with the stoichiometric emissions being relatively unaffected. This occurrence was speculated to be from the plasma promotion of the Prompt NO pathway in lean conditions, which was supported by greatly increased OH* radical concentrations. Other emissions such as the Unburned Hydrocarbon CH4 and CO2 were found to decrease non-monotonically with increasing plasma intensity after the input voltage crossed the critical value, with the result being a product of various plasma combustion enhancement mechanisms such as dissociation and excitation. |
| format | Article |
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| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
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| series | Results in Engineering |
| spelling | doaj-art-20d7b6734f3746608535a5e46f2b4c772025-02-11T04:35:23ZengElsevierResults in Engineering2590-12302025-03-0125104251Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blendBoj N. Villanueva0Po-Hung Lin1Yueh-Heng Li2Jaime P. Honra3School of Mechanical, Manufacturing, and Energy Engineering, Mapua University, Manila, Metro Manila, PhilippinesDepartment of Aeronautics and Astronautics, National Cheng Kung University, Tainan, 70101, TaiwanDepartment of Aeronautics and Astronautics, National Cheng Kung University, Tainan, 70101, Taiwan; Institute of Space Systems Engineering, National Cheng Kung University, Tainan, 70101, Taiwan; Corresponding author at: Department of Aeronautics and Astronautics, National Cheng Kung Univ., Tainan, 70101, Taiwan.School of Mechanical, Manufacturing, and Energy Engineering, Mapua University, Manila, Metro Manila, PhilippinesHydrocarbon/Nitrous Oxide fuel blends, commonly called HyNOx or NOFBX, are currently being researched for aeronautic and aerospace propellant applications due to its good performance and economy. However, research on the fuel blend is relatively scant, especially regarding its emission characteristics, as the composition may produce high NOx emissions, which are harmful to both human society and the environment. This study sought to utilize Nanosecond Pulsed Dielectric Barrier Discharge plasma as an emission control mechanism as not only has it found success as a pollution control mechanism, but also as a combustion enhancement one. Chemiluminescence imaging was used to observe the changes in radical species emissions for a laminar premixed CH4/N2O/Ar flame under plasma actuation and emission results were measured with a flue gas analyzer. It was found that once the input voltage crossed a critical value, the chemiluminescent concentrations of CH* and NH2* saw a significant rise, leading non-monotonic increase in the concentration of NOx with this phenomenon lessening as equivalence ratios increased, with the stoichiometric emissions being relatively unaffected. This occurrence was speculated to be from the plasma promotion of the Prompt NO pathway in lean conditions, which was supported by greatly increased OH* radical concentrations. Other emissions such as the Unburned Hydrocarbon CH4 and CO2 were found to decrease non-monotonically with increasing plasma intensity after the input voltage crossed the critical value, with the result being a product of various plasma combustion enhancement mechanisms such as dissociation and excitation.http://www.sciencedirect.com/science/article/pii/S2590123025003330Nitrous Oxide Fuel Blend (NOFBX)Plasma assisted combustionNOx emissionsChemiluminescence |
| spellingShingle | Boj N. Villanueva Po-Hung Lin Yueh-Heng Li Jaime P. Honra Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend Results in Engineering Nitrous Oxide Fuel Blend (NOFBX) Plasma assisted combustion NOx emissions Chemiluminescence |
| title | Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| title_full | Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| title_fullStr | Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| title_full_unstemmed | Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| title_short | Effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| title_sort | effect of plasma assisted combustion on emissions of a premixed nitrous oxide fuel blend |
| topic | Nitrous Oxide Fuel Blend (NOFBX) Plasma assisted combustion NOx emissions Chemiluminescence |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025003330 |
| work_keys_str_mv | AT bojnvillanueva effectofplasmaassistedcombustiononemissionsofapremixednitrousoxidefuelblend AT pohunglin effectofplasmaassistedcombustiononemissionsofapremixednitrousoxidefuelblend AT yuehhengli effectofplasmaassistedcombustiononemissionsofapremixednitrousoxidefuelblend AT jaimephonra effectofplasmaassistedcombustiononemissionsofapremixednitrousoxidefuelblend |