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Investigation of forward flow distributed combustion for gas turbine application

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  • Arghode, Vaibhav K.
  • Gupta, Ashwani K.

Abstract

New innovative advanced combustion design methodology for gas turbine applications is presented that is focused on the quest towards zero emissions. The new design methodology is called colorless distributed combustion (CDC) and is significantly different from the currently used methodology. In this paper forward flow modes of CDC have been investigated for application to gas turbine combustors. The CDC provides significant improvement in pattern factor, reduced NOx emission and uniform thermal field in the entire combustion zone for it to be called as an isothermal reactor. Basic requirement for CDC is carefully tailored mixture preparation through good mixing between the combustion air and product gases prior to rapid mixing with fuel so that the reactants are at much higher temperature to result in hot and diluted oxidant stream at temperatures that are high enough to autoignite the fuel and oxidant mixture. With desirable conditions one can achieve spontaneous ignition of the fuel with distributed combustion reactions. Distributed reactions can also be achieved in premixed mode of operation with sufficient entrainment of burned gases and faster turbulent mixing between the reactants. In the present investigation forward flow modes consisting of two non-premixed combustion modes and one premixed combustion mode have been examined that provide potential for CDC. In all the configurations the air injection port is positioned at the opposite side of the combustor exit, whereas the location of fuel injection ports is changed to give different configurations. Two combustion geometries resulting in thermal intensity of 5Â MW/m3-atm and 28Â MW/m3-atm are investigated. Increase in thermal intensity (lower combustion volume) presents many challenges, such as, lower residence time, lower recirculation of gases and effect of confinement on jet characteristics. The results are presented on the global flame signatures, exhaust emissions, and radical emissions using experiments and flowfield using numerical simulations. Ultra-low NOx emissions are found for both the premixed and non-premixed combustion modes at the two thermal intensities investigated here. Almost colorless flames (no visible flame signatures) have been observed for the premixed combustion mode. The reaction zone is observed to be significantly different in the two non-premixed modes. Higher thermal intensity case resulted in lower recirculation of gases within the combustion chamber and higher CO levels, possibly due to lower associated residence time. The characteristics at the two thermal intensity combustors investigated here were found to be similar.

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  • Arghode, Vaibhav K. & Gupta, Ashwani K., 2011. "Investigation of forward flow distributed combustion for gas turbine application," Applied Energy, Elsevier, vol. 88(1), pages 29-40, January.
    • Handle: RePEc:eee:appene:v:88:y:2011:i:1:p:29-40
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    1. Arghode, Vaibhav K. & Gupta, Ashwani K., 2010. "Effect of flow field for colorless distributed combustion (CDC) for gas turbine combustion," Applied Energy, Elsevier, vol. 87(5), pages 1631-1640, May.
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    1. Tyliszczak, Artur & Boguslawski, Andrzej & Nowak, Dariusz, 2016. "Numerical simulations of combustion process in a gas turbine with a single and multi-point fuel injection system," Applied Energy, Elsevier, vol. 174(C), pages 153-165.
    2. Khalil, Ahmed E.E. & Arghode, Vaibhav K. & Gupta, Ashwani K. & Lee, Sang Chun, 2012. "Low calorific value fuelled distributed combustion with swirl for gas turbine applications," Applied Energy, Elsevier, vol. 98(C), pages 69-78.
    3. Zeinivand, Hamed & Bazdidi-Tehrani, Farzad, 2012. "Influence of stabilizer jets on combustion characteristics and NOx emission in a jet-stabilized combustor," Applied Energy, Elsevier, vol. 92(C), pages 348-360.
    4. Gupta, Shreshtha Kumar & Kushwaha, Abhijit Kumar & Arghode, Vaibhav Kumar, 2020. "Investigation of peripheral vortex reverse flow (PVRF) combustor for gas turbine engines," Energy, Elsevier, vol. 193(C).
    5. Pramanik, Santanu & Ravikrishna, R.V., 2022. "Non premixed operation strategies for a low emission syngas fuelled reverse flow combustor," Energy, Elsevier, vol. 254(PB).
    6. Li, Q.Y. & Wang, L. & Ju, Y.L., 2011. "Analysis of flammability limits for the liquefaction process of oxygen-bearing coal-bed methane," Applied Energy, Elsevier, vol. 88(9), pages 2934-2939.
    7. Kruse, Stephan & Kerschgens, Bruno & Berger, Lukas & Varea, Emilien & Pitsch, Heinz, 2015. "Experimental and numerical study of MILD combustion for gas turbine applications," Applied Energy, Elsevier, vol. 148(C), pages 456-465.
    8. Arghode, Vaibhav K. & Gupta, Ashwani K., 2013. "Role of thermal intensity on operational characteristics of ultra-low emission colorless distributed combustion," Applied Energy, Elsevier, vol. 111(C), pages 930-956.
    9. Enagi, Ibrahim I. & Al-attab, K.A. & Zainal, Z.A., 2018. "Liquid biofuels utilization for gas turbines: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 90(C), pages 43-55.
    10. Weber, Roman & Gupta, Ashwani K. & Mochida, Susumu, 2020. "High temperature air combustion (HiTAC): How it all started for applications in industrial furnaces and future prospects," Applied Energy, Elsevier, vol. 278(C).
    11. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2011. "Distributed swirl combustion for gas turbine application," Applied Energy, Elsevier, vol. 88(12), pages 4898-4907.
    12. Arghode, Vaibhav K. & Gupta, Ashwani K. & Bryden, Kenneth M., 2012. "High intensity colorless distributed combustion for ultra low emissions and enhanced performance," Applied Energy, Elsevier, vol. 92(C), pages 822-830.
    13. Ye, Jingjing & Medwell, Paul R. & Varea, Emilien & Kruse, Stephan & Dally, Bassam B. & Pitsch, Heinz G., 2015. "An experimental study on MILD combustion of prevaporised liquid fuels," Applied Energy, Elsevier, vol. 151(C), pages 93-101.
    14. Kuban, Lukasz & Stempka, Jakub & Tyliszczak, Artur, 2019. "A 3D-CFD study of a γ-type Stirling engine," Energy, Elsevier, vol. 169(C), pages 142-159.
    15. Xing, Fei & Kumar, Arvind & Huang, Yue & Chan, Shining & Ruan, Can & Gu, Sai & Fan, Xiaolei, 2017. "Flameless combustion with liquid fuel: A review focusing on fundamentals and gas turbine application," Applied Energy, Elsevier, vol. 193(C), pages 28-51.
    16. Pramanik, Santanu & Ravikrishna, R.V., 2020. "Investigation of novel scaling criteria on a reverse-flow combustor," Energy, Elsevier, vol. 206(C).
    17. Arghode, Vaibhav K. & Khalil, Ahmed E.E. & Gupta, Ashwani K., 2012. "Fuel dilution and liquid fuel operational effects on ultra-high thermal intensity distributed combustor," Applied Energy, Elsevier, vol. 95(C), pages 132-138.

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