Abstract
This study examines the influence of the proximity of a ceiling on the burning rate of a fire in enclosures. The parameters included the pool diameter, distance to the ceiling and fuel type. The analysis focused on the average mass loss rate. The results confirmed the increase in mass loss rate with the elevation for all fuel types. This increase in the mass loss rate appears from a distance to the ceiling that is correlated with the flame height. It is caused by an increase in the heat flux emitted by the flame, which changes shape, and the temperature of the ceiling, which increases with the fire elevation. A correlation is proposed to predict the increase in mass loss rate as a function of the enthalpy ratio Δ H/ Lv and flame height. A comparison of the results with previous experimental studies demonstrated consistency between the different tests.
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