What is the difference between fire triangle and fire tetrahedron theory?

The fire triangle was a simple model that explained the 3 elements required to create a fire – oxygen, fuel and heat. The fire triangle was changed to a fire tetrahedron (pyramid) to represent the addition of the new element.

What do you mean by fire triangle?

The fire triangle, or combustion triangle, is the three components needed to ignite and sustain a fire. The three ingredients of a fire triangle are; heat, fuel and oxygen. If just one of these components is removed, the fire triangle will collapse and the fire will be extinguished.

How do you describe a fire tetrahedron?

The fire tetrahedron is a geometric representation of the four properties that must be necessary for a fire to occur within a given situation. These properties include fuel, heat, an oxidizing agent (usually oxygen found in ambient air), and an uninhibited chemical reaction.

What is convection of fire?

It is the type of heat one feels when sitting in front of a fireplace or around a campfire. Convection is the transfer of heat by the physical movement of hot masses of air. As air is heated, it expands (as do all objects). As it expands, it becomes lighter then the surrounding air and it rises.

What is the role of chemical chain reaction in the fire tetrahedron?

This chain reaction is the feedback of heat to the fuel to produce the gaseous fuel used in the flame. Another way to state this is to say that the chain reaction provides the heat necessary to maintain the fire. With this fourth component added, fire is described as the Fire Tetrahedron.

How does a fire triangle relate to how fiercely a wildfire burns?

The Fire Triangle is a simple way of understanding the three elements a fire needs to ignite: each side of the triangle represents one of the three ingredients – oxygen, heat, and fuel – demonstrating the interdependence of these ingredients in creating and sustaining fire.

What are the four elements of the foam tetrahedron?

This means that before being used, they must be proportioned (mixed with water) and aerated (mixed with air). Four elements are necessary to produce a quality foam blanket. These elements include: foam concentrate, • water, • air, and • aeration (mechanical agitation).

How does convection cause fire?

Convection is the most dangerous way in which fire can spread through a property. The heat generated by a fire naturally rises, but in an enclosed space such as an office, this heat becomes trapped when it hits the ceiling. The heat then travels horizontally, spreading the fire across the entire space.

What are the four things that make up the fire tetrahedron?

The four elements are oxygen for sustaining combustion, enough heat for raising the material to the ignition temperature, combustible material or fuel, and a subsequent exothermic chain reaction in the material. All the four sides of the fire tetrahedron symbolise the Heat, Oxygen, Fuel, and Chemical Chain Reaction.

Which component of the fire tetrahedron is the energy component?

the fire tetrahedron is a four-sided geometric representation of the four factors necessary for fire: fuel (any substance that can undergo combustion), heat (heat energy sufficient to release vapor from the fuel and cause ignition), oxidizing agent (air containing oxygen), and uninhibited chemical chain reaction ( …