- #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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In summary: However, this is not an efficient method of generating electricity and is not commonly used. Other methods, such as thermoelectric generators, are more practical for converting frictional energy into electrical energy.
- #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)
Last edited:
- #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.
1. How is friction energy converted into electrical energy?
The conversion of friction energy into electrical energy occurs through a process called electromagnetic induction. This process involves moving a magnet through a coil of wire, which creates an electric current. Friction is used to move the magnet, thus converting the energy of the friction into electrical energy.
2. What are some examples of this conversion in everyday life?
There are many examples of this conversion in everyday life, such as using a hand-crank flashlight or a bicycle dynamo to generate electricity. Other examples include rubbing your hands together to create heat and friction, which can then be converted into electrical energy with the use of a thermoelectric generator.
3. Is the conversion of friction energy into electrical energy efficient?
The efficiency of this conversion depends on various factors, such as the materials used and the design of the system. In general, the conversion is not 100% efficient, as some energy is lost as heat during the process. However, advancements in technology have led to more efficient methods of converting friction energy into electrical energy.
4. Can this conversion be used to power large-scale systems?
Yes, this conversion can be used to power large-scale systems, such as power plants and industrial machinery. In these cases, the friction energy is usually generated by the rotation of turbines or the movement of large machines, which is then converted into electrical energy using generators.
5. What are some potential benefits of using this conversion in renewable energy sources?
Using this conversion in renewable energy sources has several potential benefits. It allows for the harnessing of energy from sources that would otherwise be wasted, such as the friction between wind and turbines or water and dams. This can help reduce our reliance on non-renewable energy sources and decrease carbon emissions. It also has the potential to make renewable energy sources more cost-effective and accessible to a wider range of people.
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