A lot of coal is piled together. Will it spontaneously ignite when the weather is very hot?

[199005] Window of popular science Be careful, coal, as an important fuel, will burn by itself. When the coal in the coal pile comes into contact with air, it will undergo oxidation reaction and release heat. After coal oxidation reaction, the temperature of coal pile rises. After the temperature of coal rises, the oxidation reaction speed of coal accelerates. In this way, the temperature of the coal pile is getting higher and higher. When the temperature exceeds the spontaneous combustion point of coal, it will spontaneously ignite. In addition, when coal comes into contact with steam, because coal has adsorption capacity, steam condenses into water on its surface and gives off a lot of heat, which makes the temperature of coal pile rise. When the coal pile reaches a certain temperature, due to oxidation, the temperature may also reach the spontaneous combustion point of coal. The spontaneous combustion temperature of coal is related to the type of coal and the heat dissipation conditions of coal pile.

Large piles of coal may spontaneously ignite, while small piles or loose coal will not spontaneously ignite.