According to How Stuff Works, fire extinguishers use carbon dioxide to displace the oxygen necessary for a fire to burn, extinguishing the blaze. Fires need oxygen, fuel, and heat to ignite, and removing any one of those three components can put out a fire. Carbon dioxide extinguishers work because carbon dioxide molecules are heavier than oxygen molecules.
The C02 extinguishes the fire by attacking fuel, oxygen and heat. It mainly attacks oxygen to extinguish a burning fire. However, in a deep-seated fire C02 extinguishes the fire by removing oxygen and decreasing gaseous phase of the fuel. There are two ways to apply CO2 in fire suppression.
Why Is Carbon Dioxide Used in Fire Extinguishers? | eHow
CO2 is effective on liquid fires, gaseous fires and electrical fires (American classes B and C and International classes B, C and E). The gas is particularly useful for electrical fires as it’s non-conductive and leaves no trace after its use (as would be the case for foams or other gases). Advertisement.
Carbon dioxide gas does not support combustion. It displaces oxygen so that oxygen cannot come in contact with fire. Thus, carbon dioxide gas stops the supply of oxygen thereby removing oxygen from the fire triangle. In fire extinguishers, carbon dioxide gas is stored under very high pressure. When carbon dioxide gas comes out of fire extinguishers, it is very cold. So it cools …
People Also Ask why does carbon dioxide is used in extinguishing fire
Why is carbon dioxide used in fire extinguishers?
Why Is Carbon Dioxide Used in Fire Extinguishers? Why Is Carbon Dioxide Used in Fire Extinguishers? According to How Stuff Works, fire extinguishers use carbon dioxide to displace the oxygen necessary for a fire to burn, extinguishing the blaze.
How does a portable C02 extinguisher work?
Portable C02 extinguishers can be used on electrical wiring and equipment. A fire can only happen when fuel, oxygen and heat are present. The C02 extinguishes the fire by attacking fuel, oxygen and heat. It mainly attacks oxygen to extinguish a burning fire.
Why are fire extinguishers not suitable for chemical fires?
These extinguishers are not suitable for chemical or electrical fires since the liquid can conduct electricity and cause flammable agents to spread. Other extinguishers coat the fuel, forming a barrier between the flammable material and the oxygen in the surrounding air.
Can you use CO2 to put out a fire?
CO2 is effective on liquid fires, gaseous fires and electrical fires (American classes B and C and International classes B, C and E). The gas is particularly useful for electrical fires as it’s non-conductive and leaves no trace after its use (as would be the case for foams or other gases).
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why Carbon dioxide is used in fire extinguisher? Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher