- Author
- Kinbara, T. | Kawasaki, A.
- Title
- Spontaneous Ignition of Wooden Materials Heated for a Long Time at a Low Temperature.
- Coporate
- Sophia Univ., Tokyo, Japan Police Headquarters of Kanagawa Prefecture, Yokohama, Japan
- Journal
- Bulletin of the Fire Prevention Society of Japan, Vol. 16, No. 2, 9-16, January 1967
- Keywords
- autoignition | wood | low temperature | sawdust
- Abstract
- [ONLY ABSTRACT IN ENGLISH] According to the Report of the Tokyo Fire Department, some fires, though rather rare, were caused by the spontaneous ignition of wooden materials contacting, for a long time with steam pipes for heating rooms. It is doubtful, however, that wooden materials can really catch fire at this low temperature (100-150ºC), even in the most favorable conditions, i.e., with a favorable rate of air supply and with the least dissipation of heat produced by oxidation. These conditions are fulfilled by using a large sphere of saw-dust. Thus, the spontaneous ignition of a large saw-dust sphere suspended in a room of temperature Ta was studied. It has been well known theoretically that whether the temperature of the sphere rises up beyond Ta and the sphere ignites spontaneously or the temperature cannot exceed Ta to the last dependson the value of a discriminant.