A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In this work, experimental techniques and methods were developed to study the growth of fire from a point ignition to a burning area of two feet in diameter. Numerous experiments on ten different kinds of wood were conducted to determine the dominant mechanisms of fire spread and to obtain reliable chemical and physical data. Simultaneous measurements of fire diameter, weight loss, surface temperature, forward flame radiation, total convective and radiative energy, depletion of O2, production of CO2, CO, total unburned hydrocarbons, and water were made. The study also developed a theory to predict transient fire growth on the basis of the following observations: (1) that fire spread may be treated as a continuous ignition process, (2) forward gas-phase heat transfer is a local phenomenon independent of fire size, (3) forward radiative heat transfer is the primary accelerating mechanism, (4) energetics due to desorption of adsorbed moisture is far more important than heat of thermal decomposition of wood, (5) reradiation from wood and char is the primary heat loss mechanism, (6) conduction of the heat parallel to the spread surface does not contribute significantly to the fire spread process.
In this work, experimental techniques and methods were developed to study the growth of fire from a point ignition to a burning area of two feet in diameter. Numerous experiments on ten different kinds of wood were conducted to determine the dominant mechanisms of fire spread and to obtain reliable chemical and physical data. Simultaneous measurements of fire diameter, weight loss, surface temperature, forward flame radiation, total convective and radiative energy, depletion of O2, production of CO2, CO, total unburned hydrocarbons, and water were made. The study also developed a theory to predict transient fire growth on the basis of the following observations: (1) that fire spread may be treated as a continuous ignition process, (2) forward gas-phase heat transfer is a local phenomenon independent of fire size, (3) forward radiative heat transfer is the primary accelerating mechanism, (4) energetics due to desorption of adsorbed moisture is far more important than heat of thermal decomposition of wood, (5) reradiation from wood and char is the primary heat loss mechanism, (6) conduction of the heat parallel to the spread surface does not contribute significantly to the fire spread process.
Pyrolysis, Ignition and Fire Spread on Horizontal Surfaces of Wood
A. Atreya (author)
1983
470 pages
Report
No indication
English
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