[PDF] Flame Characteristics With High Temperature Air Combustion eBook

Author : Hiroshi Tsuji
Publisher : CRC Press
Page : 425 pages
File Size : 11,6 MB
Release : 2002-12-03
Category : Nature
ISBN : 1420041037

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Maximize efficiency and minimize pollution: the breakthrough technology of high temperature air combustion (HiTAC) holds the potential to overcome the limitations of conventional combustion and allow engineers to finally meet this long-standing imperative. Research has shown that HiTAC technology can provide simultaneous reduction of CO2 and nitric

Author : J.F. Griffiths
Publisher : Routledge
Page : 276 pages
File Size : 12,39 MB
Release : 2019-01-22
Category : Science
ISBN : 1351448420

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An introduction for postgraduate and undergraduate students to the chemical and physical principles of flame and combustion phenomena. This book should be of interest to undergraduate/postgraduate chemists; chemical engineers; undergraduate/postgraduate mechanical engineers and environmental scientists; and industrial combustion technologists.

Author : Ralph Melvin Nelson (Jr.)
Publisher :
Page : 18 pages
File Size : 46,53 MB
Release : 1980
Category : Forest fires
ISBN :

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Abstract: Equations describing flow in bouyant turbulent jets have been applied to the derivation of characteristics for forest fire flames. Approximate solutions are used to develop relationships for flame lengths, angles, heights, and tip velocities for fires heading with the wind and burning in calm air as functions of Byram's fire intensity. I. (Btu/ft-sec). Flame length and velocity relationships are tested with data taken during controlled burns in southern fuels and with data from the literature. Backfire data are described by the equations for calm-air conditions. Both theoretical and experimental results show that flame lengths for backfires and headfires vary as I-2/3 and I-1/2, respectively; flame tip velocities vary as I-1/3 and I-1/2.

Author : Frank A. Albini
Publisher :
Page : 52 pages
File Size : 12,81 MB
Release : 1980
Category : Forest fires
ISBN :

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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.

Author : Engineering Software
Publisher : Engineering Software
Page : 92 pages
File Size : 19,72 MB
Release :
Category :
ISBN : 1585145041

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Combustion is a process of active oxidation of combustible compounds such as: carbon, hydrogen and sulfur. Therefore, combustion is a chemical reaction. High amount of heat is released during the combustion. Combustion has a high degree of importance in engineering. Ideal, complete and adiabatic combustion is presented. Six different fuels (carbon, hydrogen, sulfur, coal, oil and gas) react with air and oxygen enriched air as the oxidant at different stoichiometry values (stoichiometry => 1) and oxidant inlet temperature values. Reactants and combustion products enthalpy values change with an increase in the temperature and such enthalpy values are presented in a plot where one can notice fuel higher heating value (HHV) and flame temperature definitions. Physical properties of basic combustion reactants and products are presented in an enthalpy vs temperature plot. The combustion technical performance at stoichiometry => 1 conditions is presented knowing the enthalpy values for combustion reactants and products, given as a function of temperature. Combustion products composition on both weight and mole basis is given in tabular form and plotted in a few figures. Also, flame temperature, oxidant to fuel ratio and fuel higher heating value (HHV) are presented in tabular form and plotted in a few figures. The provided output data and plots allow one to determine the major combustion performance laws and trends. In this technical background material, one gets familiar with the complete and adiabatic combustion of carbon, hydrogen, sulfur, coal, oil and gas, with no heat loss, with air and oxygen enriched air as the oxidant at different stoichiometry values (stoichiometry => 1) and oxidant input temperature values, physical properties of combustion reactants and products, combustion products composition on both weight and mole basis, flame temperature, oxidant to fuel ratio and higher heating value (HHV),. As a result, basic combustion performance trends are presented.