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Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, ignition.〔Babrauskas, p.369〕 == Cause and ignition == # A substance with a relatively low ignition temperature (hay, straw, peat, etc.) begins to release heat. This may occur in several ways, usually oxidation by a little moisture and air, bacterial fermentation generates heat. # The heat is unable to escape (hay, straw, peat, etc. are good thermal insulators), and the temperature of the material rises. # The temperature of the material rises above its ignition point (even though much of the bacteria are destroyed by ignition temperatures). # Combustion begins if sufficient oxidizer, such as oxygen, and fuel are present to maintain the reaction into thermal run-away. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Spontaneous combustion」の詳細全文を読む スポンサード リンク
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