Experimental and theoretical studies of the burning of small fuel particles

Martti Aho, Jaakko Saastamoinen, Veli Linna, Jarmo T. Rantanen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    This chapter presents experimental and theoretical studies of the burning of small fuel particles. The degree of the overlapping of devolatilization and char combustion stages and fuel particle surface temperatures are important to measure in various conditions. The efflux flow of volatiles and the combustion of volatiles prevent the oxygen from reaching the particle surface, in cases where the devolatilization rate is rapid. It is found that when the devolatilization rate is great, no oxygen reaches the particle surface and the volatiles are combusted in the gas phase. In this case, the heat transfer from the gas to the particle and the combustion of volatiles in the gas phase can be studied by solving the energy equation and the conservation equations for volatiles, oxygen, and combustion products in the gas phase in a quasi-steady state. By assuming infinite gas phase kinetics, the solution becomes the infinitely thin flame sheet model.
    Original languageEnglish
    Title of host publication1991 International Conference on Coal Science
    Place of PublicationLondon
    PublisherButterworth-Heinemann
    Pages392-395
    ISBN (Print)978-0-7506-0387-4
    DOIs
    Publication statusPublished - 1991
    MoE publication typeA4 Article in a conference publication
    Event1991 International Conference on Coal Science - Newcastle-upon-Tyne, United Kingdom
    Duration: 16 Sep 199120 Sep 1991

    Conference

    Conference1991 International Conference on Coal Science
    Country/TerritoryUnited Kingdom
    CityNewcastle-upon-Tyne
    Period16/09/9120/09/91

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