The development of empirical correlations for major species yields in compartment fires has become an important priority due to the inability to calculate these quantities from first principles. Studies of simplified upper layer environments have shown that major species production rates can be correlated with the equivalence ratio in what is known as the Global Equivalence Ratio concept (GER). Due to the simplification in these past experiments, it was not known if the GER concept was valid for compartment fires. Therefore, there was a need to determine if correlations existed between major species yields and the equivalence ratio for actual compartment fires.A 2.2 m 3 test compartment was used to investigate the burning of four fuels (hexane, PMMA, spruce and flexible polyurethane foam) in compartment fires. The test compartment was specially designed with a two-ventilation path system which allowed the direct measurement of the plume equivalence ratio (the ratio of the fuel volatilization rate to the air entrainment rate normalized by the stoichiometric fuel-to-air ratio).Empirical correlations between the upper layer yield of major species and the plume equivalence ratio were shown to exist. The results reveal that the production of CO is primarily dependent on the compartment flow dynamics (i.e., the equivalence ratio) and upper layer temperature. The correlations developed in the compartment fires are qualitatively similar to those developed by Beyler for simplified upper layer environments. However, quantitative differences exist and can be explained in terms of temperature differences in experiments.

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at ABSTRACT Thermal and mechanical properties at elevated temperatures are given for various building materials. The thermal properties include thermal conductivity, specific heat, thermal expansion and density. The mechanical properties include strength and modulus of elasticity of the materials. Creep is also discussed. The various materials considered are lightweight and normal weight concrete, steel, claybrick, wood and gypsum. &sud- .

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