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    Characteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage

    Source: Journal of Engineering for Gas Turbines and Power:;2024:;volume( 146 ):;issue: 011::page 111012-1
    Author:
    Chaudhury, Meghna Das
    ,
    Sahoo, Abinash
    ,
    Vinod, Kaushik Nonavinakere
    ,
    Fisher, Wesley
    ,
    Ekkad, Srinath V.
    ,
    Narayanaswamy, Venkateswaran
    ,
    Fang, Tiegang
    DOI: 10.1115/1.4065923
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Alternative low carbon fuel blends are a promising way toward clean energy transition in the transportation and power generation sectors. In this work, the objective was to study the combustion characteristics of one such low carbon fuel blend (premixed Ammonia, Methane, and Air) in a swirl stabilized gas turbine can combustor under varying percentage of pilot fuel flow (=8–10% of the main fuel flowrate) under atmospheric pressure conditions. Pure Methane was used as the pilot flame which helped in the ignition and stabilization of the main flame and was kept on throughout the experiment. Different volume percentage of Ammonia and Methane blends was analyzed (starting from 10% to 50% Ammonia in the main fuel blend and the rest being Methane) at Reynolds number of the incoming air ∼50,000, and at equivalence ratio = 0.6 and 0.7. Characteristics such as combustor liner wall heat load and flame stability were studied using the Infrared Thermography technique and High-Speed flame imaging, respectively. In addition, both carbon and NOx emission trends were estimated for selected cases using the convergecfd software under steady-state conditions incorporating the Reynolds-averaged Navier-Stokes (RANS) re-normalization group (RNG) k–ϵ and SAGE modeling techniques. Among all cases, wall heat load was observed to be the least for the 50% Ammonia-50% Methane case, and for cases under reduced pilot percentage. Also, under reduced pilot percentage, flames were mostly unstable wherein the manifestation of instabilities at equivalence ratio = 0.6 and 0.7 was markedly different from one another.
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      Characteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4302977
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    contributor authorChaudhury, Meghna Das
    contributor authorSahoo, Abinash
    contributor authorVinod, Kaushik Nonavinakere
    contributor authorFisher, Wesley
    contributor authorEkkad, Srinath V.
    contributor authorNarayanaswamy, Venkateswaran
    contributor authorFang, Tiegang
    date accessioned2024-12-24T18:55:06Z
    date available2024-12-24T18:55:06Z
    date copyright8/16/2024 12:00:00 AM
    date issued2024
    identifier issn0742-4795
    identifier othergtp_146_11_111012.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4302977
    description abstractAlternative low carbon fuel blends are a promising way toward clean energy transition in the transportation and power generation sectors. In this work, the objective was to study the combustion characteristics of one such low carbon fuel blend (premixed Ammonia, Methane, and Air) in a swirl stabilized gas turbine can combustor under varying percentage of pilot fuel flow (=8–10% of the main fuel flowrate) under atmospheric pressure conditions. Pure Methane was used as the pilot flame which helped in the ignition and stabilization of the main flame and was kept on throughout the experiment. Different volume percentage of Ammonia and Methane blends was analyzed (starting from 10% to 50% Ammonia in the main fuel blend and the rest being Methane) at Reynolds number of the incoming air ∼50,000, and at equivalence ratio = 0.6 and 0.7. Characteristics such as combustor liner wall heat load and flame stability were studied using the Infrared Thermography technique and High-Speed flame imaging, respectively. In addition, both carbon and NOx emission trends were estimated for selected cases using the convergecfd software under steady-state conditions incorporating the Reynolds-averaged Navier-Stokes (RANS) re-normalization group (RNG) k–ϵ and SAGE modeling techniques. Among all cases, wall heat load was observed to be the least for the 50% Ammonia-50% Methane case, and for cases under reduced pilot percentage. Also, under reduced pilot percentage, flames were mostly unstable wherein the manifestation of instabilities at equivalence ratio = 0.6 and 0.7 was markedly different from one another.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleCharacteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage
    typeJournal Paper
    journal volume146
    journal issue11
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4065923
    journal fristpage111012-1
    journal lastpage111012-14
    page14
    treeJournal of Engineering for Gas Turbines and Power:;2024:;volume( 146 ):;issue: 011
    contenttypeFulltext
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