The CO2 gas is heavier than the oxygen in the air so it effectively pushes it out, displacing it from around the fuel which is burning to cause the fire. The fire is extinguished because the oxygen it needs to feed the flames has been replaced by the carbon dioxide gas.
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 …
CO2 Fire Extinguisher: How it works and limitations
Carbon Dioxide fire extinguisher works by displacing oxygen from the fire triangle. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well. CO2 extinguisher may be ineffective at extinguishing Class A fires because they may not be able to displace enough oxygen to successfully put the fire out. Where you should …
CO2 acts on fires in two ways: The release of the gas under pressure has a cooling effect, as can be seen by the resulting mist cloud and ice particles; the gas also displaces the oxygen that’s necessary to maintain combustion. Classes of Fire Fires are classified by the type of material that’s burning.
People Also Ask how does carbon dioxide extinguish fire
Why is CO2 the best fire extinguisher?
Understand that recharging a fire extinguisher can cost between $10 and $25. …Only use a portable fire extinguisher on a small fire. …It’s recommended that you inspect your extinguisher annually, looking for cracks or corrosion. …Understand how the extinguisher must be maintained by reading the instructions. …
How dangerous is CO2 fire extinguisher pressure?
Unexpected venting of a cylinder through its safety can be startling to personnel potentially leading to accidents, property damaged, or personal injury. Coming into contact with the venting of the CO 2 charge of a cylinder can cause personal injury such as frostbite.
Why is C02 used for fire extinguishing?
Why is carbon dioxide used to put out fire? The fire uses oxygen and expels carbon dioxide. Carbon dioxide is denser than oxygen. So when you spray the carbon dioxide on fire, it sinks under the oxygen, separating the fire from oxygen.
How to put out a fire with carbon dioxide?
StepsSet a paper towel underneath the jar to catch any ingredients that spill over.Pour the vinegar into the jar until it is halfway full.Drop a spoonful of baking soda into the glass. …While the mixture bubbles and foams, light the candle with your matches or lighter.Put the container next to the flame. …Be amazed as the candle goes out!
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Extinguish Fire with Carbon Dioxide experiment Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher