N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement
In this study, combustion instabilities and flue gas emission changes under different dilutions of N2 (nitrogen) and Ar (argon) of a promising biogas mixture (70% CH4 - 30% CO2) in the fight against greenhouse gas emissions were investigated. In the experiments, additions were made from 0% to 50% at...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-12-01
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| Series: | Propulsion and Power Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212540X2300072X |
| _version_ | 1797372053834170368 |
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| author | Buğrahan Alabaş İlker Yılmaz Yakup Çam |
| author_facet | Buğrahan Alabaş İlker Yılmaz Yakup Çam |
| author_sort | Buğrahan Alabaş |
| collection | DOAJ |
| description | In this study, combustion instabilities and flue gas emission changes under different dilutions of N2 (nitrogen) and Ar (argon) of a promising biogas mixture (70% CH4 - 30% CO2) in the fight against greenhouse gas emissions were investigated. In the experiments, additions were made from 0% to 50% at intervals of 10% for both gases. In order to detect the instability of the flame, external acoustic enforcements at different frequencies was applied through the speakers placed in the combustion chamber arms. The dynamic pressure fluctuation values were recorded. The results showed that low dilution ratios were effective in reducing flame instability for both inert gases. However, as the dilution ratio increased, the fuel/air mixture became leaner and blowoff occurred. In the case of comparing two different gases, it has been observed that the effect of argon gas on reducing dynamic pressure fluctuation is higher. Burner outlet temperature and brightness values of the flame decreased in both Ar and N2 dilution. CO and NOx emissions increased with increasing diluent volume for all dilution conditions. When the emissions of the two diluent gases are compared, the CO emission, which was 3134 ppm in the undiluted condition, increased up to 4949 ppm in 50% Ar dilution, while it increased to 4521 ppm in 50% N2 dilution. |
| first_indexed | 2024-03-08T18:29:52Z |
| format | Article |
| id | doaj.art-8f23e06b009949c69e547134ae1d1da6 |
| institution | Directory Open Access Journal |
| issn | 2212-540X |
| language | English |
| last_indexed | 2024-03-08T18:29:52Z |
| publishDate | 2023-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Propulsion and Power Research |
| spelling | doaj.art-8f23e06b009949c69e547134ae1d1da62023-12-30T04:44:15ZengKeAi Communications Co., Ltd.Propulsion and Power Research2212-540X2023-12-01124486504N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcementBuğrahan Alabaş0İlker Yılmaz1Yakup Çam2Department of Aeronautical Engineering, Faculty of Aeronautics and Astronautics, Erciyes University, Kayseri 38039, Turkey; Corresponding author.Department of Energy Systems Engineering, Faculty of Technology, Gazi University, Ankara 06560, TurkeyDepartment of Aircraft Maintenance and Repair, Faculty of Aeronautics and Astronautics, Erciyes University, Kayseri 38039, TurkeyIn this study, combustion instabilities and flue gas emission changes under different dilutions of N2 (nitrogen) and Ar (argon) of a promising biogas mixture (70% CH4 - 30% CO2) in the fight against greenhouse gas emissions were investigated. In the experiments, additions were made from 0% to 50% at intervals of 10% for both gases. In order to detect the instability of the flame, external acoustic enforcements at different frequencies was applied through the speakers placed in the combustion chamber arms. The dynamic pressure fluctuation values were recorded. The results showed that low dilution ratios were effective in reducing flame instability for both inert gases. However, as the dilution ratio increased, the fuel/air mixture became leaner and blowoff occurred. In the case of comparing two different gases, it has been observed that the effect of argon gas on reducing dynamic pressure fluctuation is higher. Burner outlet temperature and brightness values of the flame decreased in both Ar and N2 dilution. CO and NOx emissions increased with increasing diluent volume for all dilution conditions. When the emissions of the two diluent gases are compared, the CO emission, which was 3134 ppm in the undiluted condition, increased up to 4949 ppm in 50% Ar dilution, while it increased to 4521 ppm in 50% N2 dilution.http://www.sciencedirect.com/science/article/pii/S2212540X2300072XBiogasCombustion instabilitiesPollutant emissionsGas turbine combustorDilution |
| spellingShingle | Buğrahan Alabaş İlker Yılmaz Yakup Çam N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement Propulsion and Power Research Biogas Combustion instabilities Pollutant emissions Gas turbine combustor Dilution |
| title | N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| title_full | N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| title_fullStr | N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| title_full_unstemmed | N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| title_short | N2 and Ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| title_sort | n2 and ar dilution on the premixed biogas jet flame under external acoustic enforcement |
| topic | Biogas Combustion instabilities Pollutant emissions Gas turbine combustor Dilution |
| url | http://www.sciencedirect.com/science/article/pii/S2212540X2300072X |
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