What is the role of CO2 in fire suppression?

The role of CO2 (carbon dioxide) in fire suppression primarily involves displacing oxygen in the environment where a fire is present. Fire requires three key elements to sustain combustion: fuel, heat, and oxygen. When CO2 is introduced into the area, it effectively reduces the concentration of oxygen available to the fire.

By displacing the oxygen, CO2 interrupts the chemical reaction that enables the fire to continue burning. This lack of sufficient oxygen leads to the extinguishing of the flames, making CO2 a valuable agent in fire suppression, particularly in enclosed spaces or areas with flammable materials where water cannot be used.

This carbon dioxide-based method of suppression is widely utilized in fire extinguishers and specialized fire suppression systems, especially in settings like data centers or electrical rooms where traditional suppression methods, such as water, could cause damage to sensitive equipment.