Rocky Mountain Research Station Publications

RMRS Online Publication
INT-RP-243: Thermochemical properties of flame gases from fine wildland fuels


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.

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.

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


About PDFs: For best results, do not open the PDF in your Web browser. Right-click on the PDF link to download the PDF file directly to your computer. Click here for more PDF help or order a printed copy of this publication.

The PDF below was scanned and converted to text. Some errors may occur.


Download INT-RP-243
http://www.fs.fed.us/rm/pubs_int/int_rp243.pdf

PDF File Size: 2.4 MB


Title: INT-RP-243: Thermochemical properties of flame gases from fine wildland fuels
Publish Date: February 29, 2012
Last Update:
February 29, 2012

RMRS Publications | Order a publication | Contact Us