All fire extinguishers work on the basic principle of removing any of the three basic elements needed for combustion—oxygen, heat or fuel. …
Fire extinguishers are rated by the type of fire they can put out. Class A extinguishers can put out fires from "ordinary combustibles" such as wood, plastic or paper. Class B can put out burning liquids such as gasoline or …
How do fire extinguishers work? – Explain that Stuff
How do fire extinguishers work? Inside, a fire extinguisher is quite like a giant aerosol can, often with two different substances inside.One of …
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.
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How does a fire extinguisher work?
This is accomplished by holding the contents within under pressure—either from pressure inside the extinguisher tank or from external cartridges—which can be released in a rapid burst of extinguishing agent when used.
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.
What can a Class A fire extinguisher put out?
Class A extinguishers can put out fires from "ordinary combustibles" such as wood, plastic or paper. Class B can put out burning liquids such as gasoline or grease. Class C can put out electrical fires. Extinguishers marked A, B and C can put out all types.
What is the chemical composition of fire extinguisher?
For example, the fire extinguishers (handheld) that you generally see in residential premises contain pressurized nitrogen or carbon dioxide (CO 2) to propel a fire-extinguishing agent to blow out the fire. The active fire extinguishing agent is usually potassium bicarbonate (KHCO 3 ), liquid water, or an evaporating fluorocarbon.
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How Fire Extinguishers Work Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher