A study on relation between heat release rate and radiative heat flux of wood crib burning during water discharge

Hiroyuki Sunahara, Takahiro Ishihara, Ken Matsuyama, Shińichíichi Sugahara, Masahiro Morita

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Abstract

Oxygen Consumption Calorimetric Method is generally used for measuring heat release rate (HRR) of combustible items. However, this method might have an uncertain result for gas concentration in case of during water discharged such as sprinkler. In this study we tried to find out an appropriate and simple method for measuring HRR during water discharged. A relation between HRR in free burning condition, which was calculated by mass loss rate, and radiative heat flux was obtained experimentally The Mie theory was applied to estimate a radiative attenuation by the absorption of water droplet, because the radiative heat flux during water discharged needs to take it into account. As a result, the radiative attenuation calculated by the theory was verified by experimental data.

Original languageEnglish
Pages (from-to)1009-1017
Number of pages9
JournalJournal of Environmental Engineering
Volume75
Issue number658
DOIs
Publication statusPublished - 1 Dec 2010

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Keywords

  • Heat release rate
  • Mie scattering
  • Radiative heat flux
  • Sprinkler
  • Water droplet
  • Wood crib

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