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    Author(s): Frank A. Albini
    Date: 1979
    Source: Res. Pap. INT-RP-243. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 42 p.
    Publication Series: Research Paper (RP)
    Station: Intermountain Forest Experiment Station
    PDF: View PDF  (2.44 MB)

    Description

    Describes a theoretical model for calculating thermochemical properties of the gaseous fuel that burns in the free flame at the edge of a spreading fire in fine forest fuels. Predicted properties are the heat of combustion, stoichiometric air/fuel mass ratio, mass-averaged temperature, and mass fraction of unburned fuel in the gas mixture emitted from the flame-producing zone. These variables depend upon readily determined intrinsic properties of the fuel, the fuel moisture content, fuel particle surface/volume ratio, particle mass density, and fuel loading. Numerical examples are given for several fuel-types, exploring the sensitivity to moisture content, char fraction formed (an inherent property of the fuel that can be modified by fire retardants), and an energy-leakage fraction related to fuelbed opacity. All the equations are given in appendixes.

    Publication Notes

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    Citation

    Albini, Frank A. 1979. Thermochemical properties of flame gases from fine wildland fuels. Res. Pap. INT-RP-243. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 42 p.

    Keywords

    flame, heat of combustion, stoichiometry, fuel moisture content, char, volatiles, burning characteristics, combustion properties

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