Relation between Heat Release Rate and Radiative Heat Flux of Wooden Crib Burning during Water Discharge

Fire Science and Technology

Masahiro Morita³  Hiroyuki Sunahara⁴  Shin’ichi Sugahara¹  Takahiro Ishihara²  Ken Matsuyama¹ 

[1] Center for Fire Science and Technology, Research Institute for Science and Technology, Tokyo University of Science, Japan;Yamatoprotec Corporation, Japan;Faculty Science Division 1, Department of Mathematical Information Science, Tokyo University of Science, Japan;Yamatoprotec Corporation and the Department of Architecture, Graduate School of Science and Technology, Tokyo University of Science, Japan

关键词: Wooden crib;    Sprinkler;    Heat release rate;    Radiation;    Water droplet;    Mie scattering;    Two-flux model;   

DOI  :  10.3210/fst.30.1

学科分类：环境科学（综合）

来源: Tokyo University of Science * Center for Fire Science and Technology for Building

【 摘 要 】

References(16)The oxygen consumption calorimetric method is generally used to measure the heat release rate (HRR) of combustible items. However, this method might yield uncertain results in gas concentrations when water is being discharged, such as from a sprinkler head.In this study, we attempt to devise an appropriate and simple method for measuring HRR during water discharged. A relation between HRR under free-burning conditions, which is calculated from the mass loss rate, and the radiative heat flux are evaluated experimentally. The radiative heat flux during water discharge to take into account, Mie theory is applied to estimate radiative attenuation via absorption by water droplets. The effect of water droplets is verified by experimental data.

【 授权许可】

Unknown