How do dry chemical fire extinguishers work?
If you ask any firefighter what it takes to create a fire, you will learn that you have to have three things: • A fuel – You need some sort of combustible solid, liquid or gas • Oxygen to react with the fuel • Heat – There must be enough heat to get the fuel above its flash point. If there is paper on your desk right now, it is surrounded by oxygen, but it does not burn unless you get the paper hot enough. If you want to put out a fire, you need to remove one of the three elements. When you watch firefighters battling a forest fire, they generally try to remove fuel or heat. Either they pour water on the fire to reduce the temperature, or they try to bulldoze strips of bare earth to eliminate the fuel. A carbon-dioxide fire extinguisher works by eliminating oxygen and replacing it with c
