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Experimental and Numerical Investigation of a MILD Combustion Chamber for Micro Gas Turbine Applications

Author

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  • Valentina Fortunato

    (Aero-Thermo-Mecanics Laboratory, École Polytechnique de Bruxelles, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
    Combustion and Robust Optimization Group (BURN), Université Libre de Bruxelles and Vrije Universiteit Brussel, 1050 Bruxelles, Belgium)

  • Andreas Giraldo

    (MITIS SA, 4000 Liège, Belgium)

  • Mehdi Rouabah

    (Aero-Thermo-Mecanics Laboratory, École Polytechnique de Bruxelles, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
    MITIS SA, 4000 Liège, Belgium)

  • Rabia Nacereddine

    (MITIS SA, 4000 Liège, Belgium)

  • Michel Delanaye

    (MITIS SA, 4000 Liège, Belgium)

  • Alessandro Parente

    (Aero-Thermo-Mecanics Laboratory, École Polytechnique de Bruxelles, Université Libre de Bruxelles, 1050 Bruxelles, Belgium
    Combustion and Robust Optimization Group (BURN), Université Libre de Bruxelles and Vrije Universiteit Brussel, 1050 Bruxelles, Belgium)

Abstract

In the field of energy production, cogeneration systems based on micro gas turbine cycles appear particularly suitable to reach the goals of improving efficiency and reducing pollutants. Moderate and Intense Low-Oxygen Dilution (MILD) combustion represents a promising technology to increase efficiency and to further reduce the emissions of those systems. The present work aims at describing the behavior of a combustion chamber for a micro gas turbine operating in MILD regime. The performances of the combustion chamber are discussed for two cases: methane and biogas combustion. The combustor performed very well in terms of emissions, especially CO and NO x , for various air inlet temperatures and air-to-fuel ratios, proving the benefits of MILD combustion. The chamber proved to be fuel flexible, since both ignition and stable combustion could be achieved by also burning biogas. Finally, the numerical model used to design the combustor was validated against the experimental data collected. The model performs quite well both for methane and biogas. In particular, for methane the Partially Stirred Reactor (PaSR) combustion model proved to be the best choice to predict both minor species, such as CO, more accurately and cases with lower reactivity that were not possible to model using the Eddy Dissipation Concept (EDC). For the biogas, the most appropriate kinetic mechanism to properly model the behavior of the chamber was selected.

Suggested Citation

  • Valentina Fortunato & Andreas Giraldo & Mehdi Rouabah & Rabia Nacereddine & Michel Delanaye & Alessandro Parente, 2018. "Experimental and Numerical Investigation of a MILD Combustion Chamber for Micro Gas Turbine Applications," Energies, MDPI, vol. 11(12), pages 1-21, December.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3363-:d:186971
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    References listed on IDEAS

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    Cited by:

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    2. Subrat Garnayak & Subhankar Mohapatra & Sukanta K. Dash & Bok Jik Lee & V. Mahendra Reddy, 2021. "Effect of the Preheated Oxidizer Temperature on Soot Formation and Flame Structure in Turbulent Methane-Air Diffusion Flames at 1 and 3 atm: A CFD Investigation," Energies, MDPI, vol. 14(12), pages 1-24, June.
    3. Tu, Yaojie & Xu, Shunta & Xu, Mingchen & Liu, Hao & Yang, Wenming, 2020. "Numerical study of methane combustion under moderate or intense low-oxygen dilution regime at elevated pressure conditions up to 8 atm," Energy, Elsevier, vol. 197(C).
    4. Jaroslaw Krzywanski & Wojciech Nowak & Karol Sztekler, 2022. "Novel Combustion Techniques for Clean Energy," Energies, MDPI, vol. 15(13), pages 1-3, June.
    5. Jean-Marc Fąfara & Norbert Modliński, 2023. "Computational Fluid Dynamics (CFD) Assessment of the Internal Flue Gases Recirculation (IFGR) Applied to Gas Microturbine in the Context of More Hydrogen-Enriched Fuel Use," Energies, MDPI, vol. 16(18), pages 1-25, September.

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