They work by smothering the fire: when you spread a thin layer of foam over a fire, you cut the fuel off from the oxygen around it. Foam extinguishers also help to absorb heat, since the cool foam they release contains a lot of water.
Working of a Fire Extinguisher. All fire extinguishers work on the basic principle of removing any of the three basic elements needed for …
How Does a Fire Extinguisher Work? – SelectSafety.net
The purpose of a fire extinguisher is to break this process by removing or blocking one of these three elements. Once this happens, the fire will either extinguish immediately or burn out. To remove heat, a fire extinguisher can smother the fire. To remove oxygen, the fire extinguisher can smother it as well.
The wind fire extinguisher blows a large amount of air to the flame at a high speed to make the surface temperature of the burning object drop sensitively. When the temperature is lower than the ignition point, the combustion stops.
People Also Ask a fire extinguisher working
How does a fire extinguisher work?
Every fire-fighting technique you can think of involves removing heat, oxygen, or fuel—sometimes more than one of those things at the same time. Fire extinguishers work by removing heat, air, or both.
What does a fire extinguisher look like?
Most of the extinguisher is filled with water (blue). A tube runs right up the inside of the tube to a nozzle outside (gray). The nozzle often ends in a piece of bendy plastic so you can easily direct it toward the base of a fire. To operate the extinguisher, you pull the ring and press the handle.
Where can I try out a fire extinguisher?
If you want to try out a fire extinguisher, go visit your local fire department or arrange for them to come to your school. They’ll often be happy to oblige. Many fire departments have open days when you can look around, peek inside a fire engine, and even slide down the fire station poles!
Is water a good fire extinguishing agent?
However, water as an extinguishing agent is not always useful. In a computer or a control room, for example, water could cause short-circuiting, whereas in a fuel storage system, water would barely be effective. Similarly, a water sprinkling extinguisher should not be used in an application where weight and space is limited—such as on an aircraft.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher