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Such a fire extinguishing method!

2009-12-12View Original

Thread Content

The fire extinguishing methods we use include: cooling method; asphyxiation method ; Isolation method ; Chemical inhibition method. What category does blowing out a candle with the mouth fall under? This makes it easy for people to think that the airflow blown out contains carbon dioxide. So, if a fan is used to blow out a candle, what type of fire extinguishing method is that?
Reply #22009-12-12
Before answering the original poster’s question, it is necessary to understand the principle of how a candle burns: The thread in the center of a candle is called the wick, and its role is to draw up the liquid wax. When a candle is first produced, there is already solid wax on the wick. When you light the candle with fire, the solid wax heats up, melts, and then vaporizes; the wax vapor is then ignited by the fire, and thus the candle lights up. As the candle burns, it releases heat that causes the solid wax below to melt, which is then drawn up by the wick. This melted wax is further heated by the fire above, melting and vaporizing again, and getting ignited, thus creating a cycle. Note that only gaseous wax can burn; neither solid nor liquid wax can burn. Therefore, using a fan to blow out a candle is a cooling method! Since the heat released by a burning candle is limited, the large amount of cold air blown in with a fan for cooling prevents the liquid wax from vaporizing, which ultimately causes the flame to go out. The above are merely my personal opinions; please point out any errors!
Reply #32009-12-12
After checking carefully, it should belong to the cooling method, right?
Reply #42009-12-13
Well, like the cooling method. I found that when putting out a fire, as long as the wind is strong enough to blow the flames away from the fuel, the fire can be extinguished – isn’t that considered a separation method? It’s just my wild imagination; please don’t take it personally, experts, hehe.
Reply #52009-12-13
I really don’t know what the logic is behind this; it’s just… *learn* *learn*.
Reply #62009-12-13
Blowing out a candle with the mouth and blowing it out with a fan both belong to the cooling method of extinguishing fires; in both cases, the temperature of the burning area is reduced below the ignition point of the combustible material, thereby extinguishing the fire.
Reply #72009-12-13
I had never thought about this issue before. It should belong to the cooling method, though. In my personal opinion.
Reply #82009-12-13
Candle flames are small, and a strong breeze can instantly lower the temperature around them, causing the combustion to stop; therefore, using the mouth or a fan both falls under the category of cooling methods.
Reply #92009-12-13
It should belong to the cooling method; a large amount of air can instantly lower the surrounding temperature, preventing it from reaching the ignition point.
Reply #102009-12-13
This is called treating the symptom: a candle goes out when blown out, while a fire grows stronger the more it is blown at; no one uses knives or guns to kill mosquitoes, nor do they use small knives to kill wolves. :lol
Reply #112009-12-13
Agree with the second floor’s opinion; using a fan to blow out the candle is a cooling method!

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