The formation of self-heating process in the raw-cotton mass

Because of the raw cotton that placed in the bunt in order to keep having high heating storage capacity and biological activity, its seed breathes and changes the relative humidity of the atmosphere in the bunt. It was theoretically proved that, as a result of this process, the change of the atmosphere in the bunt leads to self-heating process. Self-heating process arises in the form of fire and over time it spreads around. This process depends on the physical properties of the heat.