区画火災における開口噴流の流量測定

概要

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Reduced scale experiments were conducted to measure the mass flow rate of door jet from a model fire compartment as the first step of the study on door jet plume and convective heat transfer in compartment fires. As a results, the following findings have been obtained. (1) The mass flow rates of door jet can be obtained based on measurements of O_2 concentration and CO_2 concentration. (2) The mass flow rates of door jet calculated based on the gas analysis and the temperature measurement agreed well when 0.52 is used as the flow coefficient in the latter. (3) Heat release rates of fire source calculated based on gas concentration agreed in average with the heat release rate obtained from mass burning rate of fuel in the free space, but some of them differed significantly from the latter. The difference is thought to be caused by the change of fuel vaporization rate depending on ventilation factor of the compartment.
社団法人日本建築学会の論文
1997-11-30