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There is no chemical reaction involved. The CO2 simply acts like a heavy blanket, pushing the air from around the fire away. A more complex physical reaction happens as the CO2 is discharged: the sudden drop in pressure as the liquified CO2 expands results in a rapid drop in temperature, producing pellets of dry ice (solid carbon dioxide). The cloud you see when a CO2 extinguisher is activated is mostly water vapor condensed from the atmosphere by the cold gas.
What else can I help you with?
What reaction takes place in the fire extinguisher?
In a fire extinguisher, the primary reaction involves the release of a chemical agent that disrupts the combustion process. For example, in a CO2 extinguisher, carbon dioxide is released, which displaces oxygen around the fire, effectively suffocating it. In foam and dry chemical extinguishers, the agents can form a barrier that prevents oxygen from reaching the fuel or interrupt the chemical reactions involved in combustion. These reactions help to extinguish the fire by removing one or more of the elements of the fire triangle: heat, fuel, or oxygen.
Why are carbon dioxide used as extinguisher?
Carbon dioxide is used because it takes away the heat from the fire. Carbon dioxide is very cold and also displaces the oxygen. Heat, oxygen and fuel are part of a "fire triangle" take any of those elements away and the fire will be extinguished.
Why is carbon dioxide in fire extinguisher?
Fires need oxygen, and the CO2 (carbon dioxide) smothers the fire by keeping oxygen away. CO2 is only used for certain types of fire, mostly wood, paper, cloth, and electrical fires. The CO2 displaces the oxygen. You spray a fire at its base with an extinguisher. Fires draw oxygen from its base by way of draft. The CO2 from the extinguisher is picked up by the fire and does not support combustion. For very large fires, CO2 is not as effective because of the rapid flow of air into the fire, which is caused by higher temperatures. Water or foam is better at cooling the fire and making the flammable materials harder to burn.
What type of fire extinguisher coule create an oxygen defiicient atmosphere?
A fire extinguisher that could create an oxygen-deficient atmosphere is one that uses carbon dioxide (CO2) as the extinguishing agent. When discharged, CO2 displaces oxygen in the environment, potentially lowering oxygen levels below safe thresholds. This can pose a risk to individuals in the area, making it essential to use such extinguishers in well-ventilated spaces or to evacuate the area immediately after use.
Why can't you put out a fire with a foam extinguisher?
Well, you CAN- depending on the type of fire.
Why is a burning candle extinguished by a fire extinguisher?
Like any other fire, a burning candle requires fuel, heat, oxygen and a chemical reaction. If you use a fire extinguisher, it typically removes the heat or oxygen from the process, thus stopping the fire.
What in co2 puts out an electricity fire?
Fires need oxygen to burn. Without it, the fire goes out. Using CO2 displaces oxygen in the environment.
What happens when carbon dioxide is added to a fire?
When carbon dioxide is added to a fire, it displaces oxygen, which is necessary for the fire to burn. This can help extinguish the fire by removing the oxygen fuel source.
What fire do use a carbon dioxide fire extinguisher on?
A CO2 fire extinguisher will work on flammable liquid and electrical fires only. If used on any other type of fire they will just give it more oxygen and it will spread.
Why would you use foam to put out a fire?
Not normal foam but carbon dioxide foam from a fire extinguisher. This special foam covers the fire and takes all the oxygen out of it, and with no oxygen, no fire!!!
What do fire extinguishers remove from the fire triangle?
It depends upon what kind of extinguisher it is. Water, for example, removes the heat from a fire by turning into steam and by removing available air/oxygen from the flames. Other extinguishers remove the oxygen from the fire or change the chemical reaction to stop the fire from converting the fuel to a flammable substance with the available heat.
What type of fire extinguisher do you use for metals like magnesium?
Only a Class D fire extinguisher should be used on fires involving combustible metals, such as magnesium. It will smother them by denying access to oxygen.
