This means water can spread the fire if the fuel is light enough to be carried. So carbon dioxide removes two out of the three things you need to have a fire. And, unlike water, carbon dioxide doesn’t conduct electricity, so it is good for electrical fires. How do water help in extinguishing fire? Water cools and smothers the fire at the same time. It cools it so much that it can’t burn …
How does water and carbon dioxide help in extinguishing fire?
Carbon dioxide does not itself react to extinguish fire but it cuts the supply of oxygen by replacing or displacing it. Carbon dioxide covers the fire and cut-off the contact of oxygen and fuel. This is because carbon dioxide is heavier than the oxygen. In the fire extinguishers, carbon dioxide is kept in the liquid form under pressure and it can work well on some of the small flammable …
People Also Ask how can carbon dioxide be helpful to extinguish a fire
Is it safe to use carbon dioxide as a fire extinguishing medium?
However, in extreme cases and only if no other equivalent extinguishing medium can be used, use of carbon dioxide may be allowed only if all safety measures and safeguards are taken, both in design, installation, operation and maintenance of the system, for example use of lock-out valves, provision of time delay and pre-alarm etc, training etc.
Why is carbon dioxide used as a fire suppressant?
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. Carbon dioxide provides its own pressurization for discharge from a storage container, eliminating the need for superpressurization.
How does carbon dioxide extinguish flammable flame?
Flame extinguishment by carbon dioxide is predominantly by a thermophysical mechanism in which reacting gases are prevented from achieving a temperature high enough to maintain the free radical population necessary for sustaining the flame chemistry.
How much carbon dioxide does it take to put out a fire?
Small carbon dioxide systems, such as those protecting paint lockers or fryers, use approximately 50 lb of carbon dioxide. Other systems use an average of about 300 to 500 lb of carbon dioxide (Willms 1998), but can use as much as 2,500 lb (Ishiyama 1998). Several properties of carbon dioxide make it an attractive fire suppressant.
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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