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    Dual-fuel operation of biodiesel and natural gas in a model gas turbine combustor

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    Authors
    Chong, Cheng Tung
    Chiong, Meng-Choung
    Ng, Jo-Han
    Tran, Manh-Vu
    Medina, Agustin Valera
    Józsa, Viktor
    Tian, Bo
    Affiliation
    Shanghai Jiao Tong University
    Meng-Choung Chiong
    University of Southampton Malaysia
    Monash University Malaysia
    Cardiff University
    Budapest University of Technology and Economics
    University of Derby
    Issue Date
    2020-02-17
    
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    Abstract
    The dual-fuel combustion characteristics of palm biodiesel/methyl esters (PME) and natural gas (NG) in a model gas turbine swirl flame burner are investigated at a thermal power of 9.3 kW. The PME is atomized into a spray, while the gaseous NG is premixed with the main bulk swirling air before entering the combustion chamber. The dual-fuel PME/NG flame structure is similar to the single-fuel PME, where the sooty flame brush is noticeably absent. The PME and PME/NG flames emit higher peak intensity of OH* and CH* radicals as compared to diesel at the same equivalence ratio. Dual-fuel operation results in lower NO but higher CO at ϕ = 0.9 as compared to pure diesel and PME spray flames. The higher CO emission level for dual-fuel is attributed to poor mixing and incomplete combustion as a result of reduced air flow. At a leaner operation of ϕ = 0.65, enhanced turbulence due to higher bulk air flow results in improved mixing, lowering the overall CO but increasing the NO emissions because of the more intense flame core. The study shows that optimization of the multiphase dual-fuel injection system is needed to achieve low emissions in a gas turbine combustor.
    Citation
    Chong, C.T., Chiong, M.C., Ng, J.H., Tran, M.V., Valera-Medina, A., Józsa, V. and Tian, B., (2020). 'Dual-fuel operation of biodiesel and natural gas in a model gas turbine combustor'. Energy & Fuels, 34(3), pp. 3788-3796.
    Publisher
    ACS Publications
    Journal
    Energy Fuels
    URI
    http://hdl.handle.net/10545/624882
    DOI
    10.1021/acs.energyfuels.9b04371
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.energyfuels.9b04371
    Type
    Article
    Language
    en
    EISSN
    1520-5029
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.energyfuels.9b04371
    Scopus Count
    Collections
    Department of Mechanical Engineering & the Built Environment

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