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The Combustion Of Isopropyl Alcohol
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Published on Mar 17, 2016
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PRESENTATION OUTLINE
1.
MINI CANNON
THE SAME SCIENCE USED FOR COMBUSTION POTATO GUNS!
2.
MAJOR PARTS
90 percent Isopropyl alcohol
Piezoelectric igniter
Alcohol is the fuel for the cannon
Piezoelectric igniter starts the combustion
3.
PIEZOELECTRICITY
Discovered by Jacques and Pierre Curie in 1880
Some minerals generate electricity under stress
Example: Quartz
Igniter works by striking quartz
Inverse Piezoelectric effect
4.
COMBUSTION
2(C3H8O) + 13(O2) ---> 6(CO2) + 16(H2O)
Photo by
onkel_wart (thomas lieser)
5.
WHAT'S HAPPENING?
The alcohol in the air ignites
Creates a rapidly expanding mass of air
The air creates pressure inside the chamber
With nowhere to go the air forces the projectile out the barrel
The barrel leads the projectile towards a target
6.
SOURCES
americanpiezo.com/knowledge-center/piezo-theory/piezoelectricity.html
en.m.wikipedia.org/wiki/Piezo_ignition
chemspider.com/Chemical-Structure.3644.html
nanomotion.com/piezo-ceramic-motor-technology/piezoelectric-effect/
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