Sound-based fire extinguisher puts out flames
Two engineering students from George Mason University are using the unique power of sound to put out flames – and they’re hoping the technology will become powerful enough to help extinguish forest fires.
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2. urbaneagle commented 9 years ago
technically its an air based fire extinguisher. At a shear guess it somewhat holds the 'wanting to escape' CO2 (produced by the fire) over its self, starving it of any fresh oxygen. Please correct me if I'm wrong, I'm a little interested.
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3. Zebulun commented 9 years ago
Interesting tid bit of "how it works"...
There are two forces in action here: 1) The acoustic waves increase the velocity of the air, thinning the boundary layer where combustion occurs; and 2) The waves disrupt the surface of the fuel, which increases the width of the flame, disrupting combustion as the same amount of heat is spread over a wider area.
http://www.extremetech.com/extreme/132859-darpa-creates-sound-based-fire-extinguisher
Looks like the college kids in this vid improved upon the tech.
There are two forces in action here: 1) The acoustic waves increase the velocity of the air, thinning the boundary layer where combustion occurs; and 2) The waves disrupt the surface of the fuel, which increases the width of the flame, disrupting combustion as the same amount of heat is spread over a wider area.
http://www.extremetech.com/extreme/132859-darpa-creates-sound-based-fire-extinguisher
Looks like the college kids in this vid improved upon the tech.
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6. Judge-Jake commented 5 years ago
So four years on, can you buy one?
+30 1. koritheratrat commented 9 years ago