自然発火発生理論と着火温度の関係について

抄録

A theory of an outbreak of spontaneous combustion has already been published following a quantitative study of causal factors of spontaneous combustion. The study is concerned with the rise in temperature accompanied by oxygen absorption from the air.
In this paper the results of new developments of the theory are reported. Here an application of the theory as calculation of crossing-point of coal was made.
We determined the crossing-points for some Minami-Oyubari coals and found that for slower rates of heating of our oil bath, the crossing-point was both theoretically and experimentally lowered significantly.
Thus, the crossing-point of coal does not relates to the accumulation of heat but to the oxidation rate and rate of heating.
Therefore the comparison of the crossing-point among some kinds of coal used in the experiment may show the susceptibility of their spontaneous combustion, but it cannot be very important in suggesting the practical preventive methods.