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Role of thermal intensity on operational characteristics of ultra-low emission colorless distributed combustion

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

Abstract

This paper examines the development of ultra-low emission colorless distributed combustion (CDC) for gas turbines, operating at thermal intensity in the range of 5–453MW/m3atm. Higher thermal intensity combustors are desirable for increased performance with minimal increase in hardware costs in terms of both weight and volume of gas turbine combustors. Most land based gas turbine combustors operate at thermal intensity of about 15MW/m3atm but operation at higher intensity can provide increased performance. Design of high thermal intensity CDC combustor requires control of critical parameters, such as gas recirculation, fuel/oxidizer mixing, air preheats, and residence time distribution characteristics via proper selection of different air and fuel injection configurations to achieve desirable combustion characteristics. Initially, various flow field configurations were investigated at a low thermal intensity of 5MW/m3atm. This effort was followed by investigations at higher thermal intensity ranges of 20–40MW/m3atm by reducing the combustor volume for a forward flow configuration under more favorable novel non-premixed conditions. Further investigations were performed for a simpler combustor having single injection ports for air and fuel with detailed investigation of various flow field configurations performed at a thermal intensity of 28MW/m3atm. Further reduction in combustion volume resulted in thermal intensity of 57MW/m3atm. For the flow configurations investigated, reverse cross-flow configuration was found to give more favorable results with air injected from exit end and fuel injected in a cross-flow direction to the air flow. This reverse cross-flow geometry was investigated in detail by further reducing the combustor volume. Air injection diameter was increased to reduce the pressure drop across the combustor. The combustor was investigated at thermal intensity in the range of 53–85MW/m3atm. This geometry resulted in 4ppm NO emission and CO emissions of about 27ppm under novel non-premixed flow conditions at thermal intensity of 53MW/m3atm. The pressure drop at this operational point was less than 5% to meet the conventional combustor requirements. Further reduction in combustor volume resulted in very high thermal intensity in the range of 156–198MW/m3atm and at the most desirable operational point NO and CO emissions were 8ppm and 82ppm, respectively under novel non-premixed mode at a thermal intensity of 170MW/m3atm. Even further reduction in combustor volume resulted in combustor operation at ultra-high thermal intensity of 283–453MW/m3atm and at the desirable operating point the NO and CO emissions were 4ppm and 115ppm respectively at a thermal intensity of 340MW/m3atm. The sequential efforts reveal the possibility of significantly increasing the thermal intensity while still achieving desirable emission levels.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:appene:v:111:y:2013:i:c:p:930-956
    DOI: 10.1016/j.apenergy.2013.06.039
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    References listed on IDEAS

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    1. Arghode, Vaibhav K. & Gupta, Ashwani K., 2011. "Development of high intensity CDC combustor for gas turbine engines," Applied Energy, Elsevier, vol. 88(3), pages 963-973, March.
    2. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2011. "Distributed swirl combustion for gas turbine application," Applied Energy, Elsevier, vol. 88(12), pages 4898-4907.
    3. 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.
    4. 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.
    5. 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.
    6. Khalil, Ahmed E.E. & Arghode, Vaibhav K. & Gupta, Ashwani K., 2013. "Novel mixing for ultra-high thermal intensity distributed combustion," Applied Energy, Elsevier, vol. 105(C), pages 327-334.
    7. 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.
    8. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2011. "Swirling distributed combustion for clean energy conversion in gas turbine applications," Applied Energy, Elsevier, vol. 88(11), pages 3685-3693.
    9. Arghode, Vaibhav K. & Gupta, Ashwani K., 2011. "Investigation of reverse flow distributed combustion for gas turbine application," Applied Energy, Elsevier, vol. 88(4), pages 1096-1104, April.
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    2. Sharma, Saurabh & Singh, Paramvir & Gupta, Ashish & Chowdhury, Arindrajit & Khandelwal, Bhupendra & Kumar, Sudarshan, 2020. "Distributed combustion mode in a can-type gas turbine combustor – A numerical and experimental study," Applied Energy, Elsevier, vol. 277(C).
    3. Khalil, Ahmed E.E. & Gupta, Ashwani K., 2015. "Thermal field investigation under distributed combustion conditions," Applied Energy, Elsevier, vol. 160(C), pages 477-488.
    4. 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).
    5. Li, Mingyu & He, Xiaomin & Zhao, Yuling & Jin, Yi & Ge, Zhenghao & Sun, Yuan, 2017. "Dome structure effects on combustion performance of a trapped vortex combustor," Applied Energy, Elsevier, vol. 208(C), pages 72-82.
    6. Sorrentino, Giancarlo & Sabia, Pino & Bozza, Pio & Ragucci, Raffaele & de Joannon, Mara, 2017. "Impact of external operating parameters on the performance of a cyclonic burner with high level of internal recirculation under MILD combustion conditions," Energy, Elsevier, vol. 137(C), pages 1167-1174.
    7. Khidr, Kareem I. & Eldrainy, Yehia A. & EL-Kassaby, Mohamed M., 2017. "Towards lower gas turbine emissions: Flameless distributed combustion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 1237-1266.
    8. Mieszko Tokarski & Rafał Buczyński, 2023. "Heat Transfer Analysis for Combustion under Low-Gradient Conditions in a Small-Scale Industrial Energy Systems," Energies, MDPI, vol. 17(1), pages 1-18, December.
    9. Li, Mingyu & He, Xiaomin & Zhao, Yuling & Jin, Yi & Yao, Kanghong & Ge, Zhenghao, 2018. "Performance enhancement of a trapped-vortex combustor for gas turbine engines using a novel hybrid-atomizer," Applied Energy, Elsevier, vol. 216(C), pages 286-295.
    10. Zhang, R.C. & Fan, W.J. & Shi, Q. & Tan, W.L., 2014. "Combustion and emissions characteristics of dual-channel double-vortex combustion for gas turbine engines," Applied Energy, Elsevier, vol. 130(C), pages 314-325.

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