Equivalence Ratio Effect on Helium Diluted Methane Jet Flame Temperature and Pollutant Emission for a Swirl Assisted Gas Turbine Burner
Keywords:Gas Turbine Burner, Methane, Helium, Pollutant Emissons
Temperature distribution and post-combustion emissions in gas turbine combustion chambers have attracted the attention of researchers in recent years. In this study, the combustion chamber temperature distribution and flue gas emission values at different equivalence ratios were determined by diluting the methane flame with Helium at the rate of 20% by volume. A high swirl number (1.6) swirl generator was placed at the burner outlet and the combustor power was kept constant at 3 kW. In this way, the equivalence effect in a swirled combustion was investigated. The following results emerged in the study, in which 0.7, 0.8, 0.9, 1.0, 1.1 values were tested as the equivalence ratio. With the increase in the equivalence ratio, the flame temperature and brightness at the burner outlet increased, especially up to 0.9 equivalence ratio. After this critical value, there was a tendency to decrease in temperature and luminous intensity again. As the distance from the burner axially in the combustion chamber increased, the average temperatures increased with the increase in the equivalence ratio. On the other hand, as the CO value in flue gas emissions was increased from 0.7 to 1.0 equivalence ratio, it decreased by half.
Yuasa, S. “Effects of swirl on the stability of jet diffusion flames”, Combustion and Flame 1986: 66(2); 181-192. https://doi.org/10.1016/0010-2180(86)90090-8
Rashwan, SS. “The Effect of Swirl Number and Oxidizer Composition on Combustion Characteristics of Non-Premixed Methane Flames”, Energy&Fuels 2018: 32(2); 2517 – 2526. https://doi.org/10.1021/acs.energyfuels.8b00233
Yılmaz, İ. “Effect of Swirl Number on Combustion Characteristics in a Natural Gas Diffusion Flame”, Journal of Energy Resources Technology, Transactions of the ASME 2013: 135(4); 042204. https://doi.org/10.1115/1.4024222
Patel, V., Shah, R. “Effect of swirl and number of swirler vanes on combustion characteristics of methane inverse diffusion flame”, Journal of Mechanical Science and Technology 2019: 33; 1947 – 1958. https://doi.org/10.1007/s12206-019-0345-7
Nemitallah, MA., Mansir, IB., Haque, MDA., Abdelhafez, A., Habib, MA. “Effects of Adiabatic Flame Temperature on Premixed Combustion Stability and Emission Characteristics of Swirl-Stabilized Oxy-Methane Flames”, Journal of Energy Resources Technology, Transactions of the ASME 2023: 145(2); 022302. https://doi.org/10.1115/1.4054888
Paulauskas, R., Jogi, I., Striugas, N., Martuzevicius, D., Erme, K., Raud, J., Tichonovas, M. “Application of Non-Thermal Plasma for NOx Reduction in the Flue Gases”, Energies 2019: 12(20); 3955. https://doi.org/10.3390/en12203955
Zhiyan, W., Motheau, E., Abraham, J. “Effects of equivalence ratio variations on turbulent flame speed in lean methane/air mixtures under lean-burn natural gas engine operating conditions”, Proceedings of the Combustion Institute 2017: 36(3); 3423 – 3430. https://doi.org/10.1016/j.proci.2016.09.011
Melton, TR., Vincitore, AM., Senkan, SM. “The effects of equivalence ratio on the formation of polycyclic aromatic hydrocarbons and soot in premixed methane flames”, Symposium (International) on Combustion 1998: 27(2); 1631 – 1637. https://doi.org/10.1016/S0082-0784(98)80001-5
Yousif, AA., Sulaiman, SA. “Laminar flame speed of methane- air mixtures at atmospheric conditions”, IOP Conference Series: Earth and Environmental Science 2013: 16; 012074.
Aliyu, M., Abdelhafez, A., Nemitallah, MA., Said, SAM., Habib, MA. “Effects of adiabatic flame temperature on flames’ characteristics in a gas-turbine combustor”, Energy 2022: 243; 123077. https://doi.org/10.1016/j.energy.2021.123077
Yılmaz, I., Cam, Y., Alabas, B. “Effect of N2 dilution on combustion instabilities and emissions in biogas flame”, Fuel 2022: 308; 121943. https://doi.org/10.1016/j.fuel.2021.121943
Cai, X., Wang, J., Zhang, W., Xie, Y., Zhang, M., Huang, Z. “Effects of oxygen enrichment on laminar burning velocities and Markstein lengths of CH4/O2/N2 flames at elevated pressures”, Fuel 2016: 184; 466 - 473. https://doi.org/10.1016/j.fuel.2016.07.011
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