- #1
Rahulkumar999
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It is possible to convert frictional energy into electrical energy directly?... please tell me and if possible give me the formulae...
Conversion of friction energy in to electrical energy is possible?
- Thread starter Rahulkumar999
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SUMMARY
The discussion centers on the conversion of frictional energy into electrical energy, highlighting that while it is technically feasible, it is often more efficient to reduce friction rather than capture the energy lost. The concept of regenerative braking in electric vehicles is introduced, which utilizes components similar to generators to harness energy without relying solely on friction. Key equations related to power dissipation due to friction are provided, emphasizing the relationship between force, velocity, and mass. Additionally, the triboelectric effect is mentioned as a method for generating electricity directly from friction.
PREREQUISITES- Understanding of regenerative braking systems in electric vehicles
- Familiarity with the triboelectric effect and its applications
- Basic physics concepts related to force, mass, and velocity
- Knowledge of thermoelectric generators and their functionality
- Research the principles of regenerative braking in electric vehicles
- Explore the triboelectric effect and its applications in energy generation
- Study the design and operation of thermoelectric generators
- Investigate methods for reducing friction in mechanical systems
Engineers, researchers, and students interested in energy conversion technologies, particularly in the fields of electric vehicles and renewable energy systems.
- #2
billy_joule
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Could you give some more information?
Some heat engines can convert heat produced by friction directly into electricity:
https://en.wikipedia.org/wiki/Thermoelectric_generator
But in almost all cases it's cheaper and easier to reduce friction in the first place rather than try to capture energy lost due to friction (usually very low quality energy)
Some heat engines can convert heat produced by friction directly into electricity:
https://en.wikipedia.org/wiki/Thermoelectric_generator
But in almost all cases it's cheaper and easier to reduce friction in the first place rather than try to capture energy lost due to friction (usually very low quality energy)
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- #3
berkeman
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Rahulkumar999 said:
Welcome to the PF.
That's what is used for much of the braking in electric vehicles -- are you familiar with "regenerative braking"?
- #4
rcgldr
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That uses some part of the drive train using components similar to a generator, and doesn't rely on friction (other than the friction between tires and road that coexists with the torque to drive the drivetrain when it's acting as a generator).berkeman said:
- #5
CWatters
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Friction is a force not energy. As for equations...
If you had a block of mass m being dragged along a surface at constant velocity v and the coefficient of friction was u then the power dissipated as heat would be roughly..
Power = force * velocity = mguv
If you had a block of mass m being dragged along a surface at constant velocity v and the coefficient of friction was u then the power dissipated as heat would be roughly..
Power = force * velocity = mguv
- #6
berkeman
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rcgldr said:
Bingo! Without friction, regenerative braking would not be possible.
- #7
Merlin3189
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So without friction would any braking be possible?berkeman said:Bingo! Without friction, regenerative braking would not be possible.
Perhaps we could use air braking, then use the air pressure to drive a turbine to provide regenerative energy.
- #8
David Lewis
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Friction can produce electricity directly via triboelectric effect, as in a Van de Graaff generator.
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