The behavior of fire in a closed environment is known as a fire phenomenon. Fire can burn either solid or gaseous fuel.
In the beginning of a fire, the fire will be controlled by the amount of fuel presented in the environment considering that the oxidant will be left over. The roles change during the course of the fire due to the high consumption of oxidants, which becomes the element fire limiter.
There are three types of fire phenomena, they are:
Flashover: It can occur within the first five minutes of the fire, depending on the ventilation, when the fire becomes generalized rather than localized.
Backdraft: It is an explosive phenomenon, and occurs when there is a sudden entry of oxidant in a place where oxidants are not present.
Ignition of Fire Gases: Occurs in the supply of energy. Such as heat or flame, in an oxidizing smoke.
The three phases of fire are:
Initial phase: Despite how the fire begins, in its underlying stage, the oxygen level in the climate is at first high, above 20%. Water vapor (H2O) and the flammable gases carbon dioxide (CO2) and carbon monoxide (CO) are produced by fire.
Free burning: One of the phases of fire where the effect of convection takes place. This is when warm air rises and allows cool air to enter the lowest points of the room.
Slow burning: The fire continues to consume oxygen after beginning free burning until the oxidizing agent, typically air, is insufficient to maintain it.