Journal of the Korean Society of Hazard Mitigation (한국방재학회 논문집)

Korean Society of Hazard Mitigation (한국방재학회)
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Downward Smoldering Fire Characteristics of Wood Chips and Wood Flour

목재칩과 목분의 하향 심부화재특성

  • Kim, Jin Su (Fire Disaster Prevention Research Center, National University of Incheon) ;
  • Rie, Dong Ho (Fire Disaster Prevention Research Center, National University of Incheon)
  • 김진수 (인천대학교 소방방재연구센터) ;
  • 이동호 (인천대학교 소방방재연구센터)
  • Received : 2012.11.14
  • Accepted : 2012.11.30
  • Published : 2013.02.28
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Abstract

Deep-seated fire that flameless combustion is one of the smoldering fires. It continues when fuel condensed state for heated by temperature. Deep-seated fire is toxic compounds many more than flame combustion. When that is no in case of heat source that is vulnerable, will serve as a middle step to generate a flame. However, causing deep-seated fire progress is not consistent. Also it is difficult to reproduce the experiment. The study is basic experiment for reproduce the deep-seated fire according to the density of the wood, deep as the basis for the experiment to analyze the burning rate of the fire. It is analyze that characteristics of the wood-flour and wood chips in the fire. Experimental container made of quartz was used in order to observe the eyes, the fire, the rate of progress in the vessel equipped with a thermocouple, to be able to measure the internal temperature. In addition, by using an infrared thermal imaging camera on the outside surface temperature was measured. Weight by measuring the reduction of deep-seated fire burning rate and calorific value of the correlation was derived.

저온 무염연소인 심부화재는 훈소의 한 형태로써 응축상태 연료의 표면을 직접 가열할 때 발산되는 열에 의해 지속된다. 심부화재는 화염연소보다 연료 중에 독성 화합물로 전환되는 양이 많고 열원의 강도가 약해 직접 화염을 발생시킬 수 없을 때, 화염을 발생시키는 중간단계 역할을 하게 된다. 그러나 심부화재를 발생시키는 진행과정이 일관되지 않고, 재현이 어려워 심도있는 연구가 이뤄지지 않았다. 본 연구는 정량적인 방법으로 심부화재를 재현하고 목재의 밀도에 따른 심부화재의 연소속도를 분석하기 위한 기초 실험으로써 목분과 목재칩의 하향의 심부화재 특성을 분석하였다. 실험은 하향의 심부화재 진행 속도를 육안으로 관찰 가능하도록 석영으로 제작한 용기를 사용하였으며 용기 내부에 열전대를 장착하여 내부온도를 측정할 수 있도록 하였다. 또한, 외부에 적외선 열화상 카메라를 이용하여 표면 온도를 측정하여 심부화재 연소속도 및 발열량과의 상관관계를 도출하였다.

Keywords

Acknowledgement

Grant : 심부화재 진압용 소화용수 기준 평가 및 분석

Supported by : 소방방재청

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