한국안전학회지 (Journal of the Korean Society of Safety)

  • 제31권2호
  • /
  • Pages.18-25
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  • 2016
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  • 1738-3803(pISSN)
  • /
  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
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백열전구 복사열에 의한 미송판의 발화 임계거리 및 발화시간 예측

Predicting of Ignition Time and Critical Distance for Ignition of Douglas fir by Radiant Heat of Incandescent Lamp

  • 이흥수 (한국화재보험협회 방재시험연구원) ;
  • 김두현 (충북대학교 안전공학과)
  • Lee, Heung-Su (Fire Insurers Laboratories of Korea, Korean Fire Protection Association) ;
  • Kim, Doo-Hyun (Department of Safety Engineering, Chungbuk National University)
  • 투고 : 2016.01.26
  • 심사 : 2016.04.15
  • 발행 : 2016.04.30
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초록

The incandescent lamp is an electric light fixture with a tungsten filament heated to a high temperature, by passing an electric current through it, until it glows with visible light. The hot filament is protected from oxidation with a glass bulb that is filled with inert gas. The incandescent lamp has fire risk when combustible materials are close to its glass bulb. Because its lamp has the property which converts 90~95 percents of the electric power to heat energy. 2015 national fire statistics show that fires caused by lighting fixtures were 652 cases, and incandescent lamps(44 cases) and halogen lamps(53 cases) accounted for 15 percents in those of high heating light fixtures. Since incandescent lamp fires account for about 45 percents in the high heating light fixture, we could not overlook the fire risks by the incandescent lamp. Although many studies related with those have been conducted, incandescent lamp fires are continuously occurred. This study was carried out to study the fire risk of ignition of wood due to radiant heat of incandescent lamp. Radiant heat flux of the incandescent lamp was predicted by applying point source model, and critical distance for ignition of wood was calculated by applying integral model. The results from this study could applied to fire prevention activities related to light bulb, and it could be used in fire cause investigations related to radiant heat of incandescent lamp.

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