Carbon dioxide extinguishes work by displacing oxygen, or taking away the oxygen element of the fire triangle. The carbon dioxide is also very cold as it comes out of the extinguisher, so it cools the fuel as well.
Why is carbon dioxide considered as the best fire extinguisher?
As Fire needs oxygen to burn, Carbon Dioxide Covers the fire like an blanket and cuts the contact of fire to the oxygen present in the air, So Fire stops burning. That is why Carbon Dioxide is Considere as the best Fire Extinguisher.
Why CO2 is the best fire extinguisher class 8?
Why Carbon Dioxide is the best extinguisher for fire involving electrical equipments?
- Carbon Dioxide is heavier than oxygen.
- Carbon dioxide does not harm electrical equipment.
- Carbon dioxide can be stored easily.
- It reduces ignition temperature.
- NCERT Question 8 – Explain how CO 2 is able to control fires.
Why is CO2 used for fire extinguishing?
Why is carbon dioxide used in fire extinguishers? We use carbon dioxide in fire extinguishers because it displaces or reduces the amount of oxygen in the atmosphere around the fire. … By removing the oxygen from the formula and smothering it with discharged CO₂ gas, the fire will be extinguished.
What are the advantages of CO2 extinguisher?
carbon dioxide is a non-conductor, so can be used on live electrical equipment (so is often suitable for server rooms) leaves no residue and is not as damaging to electrical equipment as powder. suitable for class B fires – flammable liquids including petrol, diesel, spirits, and paint.
Can CO2 fire extinguishers be used on any fire?
Carbon dioxide extinguishers do not leave any residue, unlike a foam extinguisher. They can also be used on Class B fires, those involving flammable liquids such paraffin or petrol. CO2 extinguishers work by smothering the fire and cutting off the supply of air.
How does CO2 control fire?
Carbon dioxide covers the fire and cut-off the contact of oxygen and fuel. This is because carbon dioxide is heavier than the oxygen. … When carbon dioxide is released, it expands enormously and cools down. Due to this temperature it brings down and this helps in controlling the fire.
What is fuel in class 8?
A material which is burnt to produce heat is called a fuel. For Ex:Wood,coal,LPG,Kerosene,petrol,diesel,natural gas,biogas. A fuel is a very good source of heat.
Can CO2 cause fire?
Several properties of carbon dioxide make it an attractive fire suppressant. It is not combustible and thus does not produce its own products of decomposition.
Which is a disadvantage of CO2 extinguishers?
Disadvantages Of Carbon Dioxide Extinguishers
As CO2 works by displacing the oxygen around the fire, it is not suitable for outdoor use, or in environments exposed to windy conditions. CO2 is a high pressured extinguisher. Using it on class A fires or class F fires could cause the fire to spread.