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The Pelton wheel was patented in 1889 by an American engineer, Lester Pelton. This kind of impulse turbine, intended for high heads, is often used in hydroelectric power plants.
Here, a small Pelton turbine is inserted into a closed hydraulic circuit and used to light an LED.
A small demonstration of how renewable hydroelectric energy is produced.
EUREKA!
A slow motion view of the high speed jet impinging the wheel and causing its rotation. Thanks to the connection to a small motor the motor kinetic energy is transformed into electric power and used to light a small LED.
The buckets are curved and have a high central ridge, hence the incoming flow is divided and redirected backwards.
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