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    Pollutant Emissions Reporting and Performance Considerations for Hydrogen–Hydrocarbon Fuels in Gas Turbines

    Source: Journal of Engineering for Gas Turbines and Power:;2022:;volume( 144 ):;issue: 009::page 91003
    Author:
    Douglas, Christopher M.;Shaw, Stephanie L.;Martz, Thomas D.;Steele, Robert C.;Noble, David R.;Emerson, Benjamin L.;Lieuwen, Timothy C.
    DOI: 10.1115/1.4054949
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Hydrogen (H2) fuel for gas turbines is a promising approach for long duration storage and dispatchable utilization of intermittent renewable power. A major global discussion point, however, is the potential air quality impact of hydrogen combustion associated with nitrogen oxide (NOX) emissions. Indeed, several studies in the combustion literature have reported elevated NOX concentrations in terms of dry ppmv NOX at 15% oxygen (O2) as a fuel's H2 fraction is increased. Yet, as emphasized in this work, this practice of directly comparing emissions based on dry ppmv at a reference O2 concentration (ppmvdr) is inappropriate across hydrogen and hydrocarbon fuel blends due to differing concentration changes induced by drying and referencing the corresponding exhaust gasses. This paper addresses three distinct approaches for comparing emissions consistently across fuel blends. Furthermore, it presents examples that quantify the differences in the apparent pollutant emissions between each approach and the usual ppmvdr reporting practice across the full range of hydrogen–methane mixture ratios. In all of the considered approaches, ppmvdr emissions values are shown to be inflated for H2 fuel blends relative to hydrocarbon fuels, making them unsuitable for direct comparisons of emissions among conventional and alternative fuels.
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      Pollutant Emissions Reporting and Performance Considerations for Hydrogen–Hydrocarbon Fuels in Gas Turbines

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    contributor authorDouglas, Christopher M.;Shaw, Stephanie L.;Martz, Thomas D.;Steele, Robert C.;Noble, David R.;Emerson, Benjamin L.;Lieuwen, Timothy C.
    date accessioned2022-12-27T23:22:53Z
    date available2022-12-27T23:22:53Z
    date copyright7/28/2022 12:00:00 AM
    date issued2022
    identifier issn0742-4795
    identifier othergtp_144_09_091003.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4288518
    description abstractHydrogen (H2) fuel for gas turbines is a promising approach for long duration storage and dispatchable utilization of intermittent renewable power. A major global discussion point, however, is the potential air quality impact of hydrogen combustion associated with nitrogen oxide (NOX) emissions. Indeed, several studies in the combustion literature have reported elevated NOX concentrations in terms of dry ppmv NOX at 15% oxygen (O2) as a fuel's H2 fraction is increased. Yet, as emphasized in this work, this practice of directly comparing emissions based on dry ppmv at a reference O2 concentration (ppmvdr) is inappropriate across hydrogen and hydrocarbon fuel blends due to differing concentration changes induced by drying and referencing the corresponding exhaust gasses. This paper addresses three distinct approaches for comparing emissions consistently across fuel blends. Furthermore, it presents examples that quantify the differences in the apparent pollutant emissions between each approach and the usual ppmvdr reporting practice across the full range of hydrogen–methane mixture ratios. In all of the considered approaches, ppmvdr emissions values are shown to be inflated for H2 fuel blends relative to hydrocarbon fuels, making them unsuitable for direct comparisons of emissions among conventional and alternative fuels.
    publisherThe American Society of Mechanical Engineers (ASME)
    titlePollutant Emissions Reporting and Performance Considerations for Hydrogen–Hydrocarbon Fuels in Gas Turbines
    typeJournal Paper
    journal volume144
    journal issue9
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4054949
    journal fristpage91003
    journal lastpage91003_7
    page7
    treeJournal of Engineering for Gas Turbines and Power:;2022:;volume( 144 ):;issue: 009
    contenttypeFulltext
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