100% Efficiency?

  • #1
FeDeX_LaTeX
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Main Question or Discussion Point

Hello;

Is there a 100% efficient component? One where there is no waste energy? Or something that is completely renewable such that all the energy wasted is put back into the component?
 

Answers and Replies

  • #2
2,017
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No such thing as a 100% efficienct component.

And remember
100% Utilisation =/= 100% Efficiency.
 
  • #3
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You can convert electrical or mechanical energy to heat with 100% efficiency.
 
  • #4
russ_watters
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Yes, DanielR implies, an electric space heater is 100% efficient.
 
  • #5
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Hmm, very true I didn't think of that, being a mechanical engineer I immediately think of moving parts and heat usually = baaad.

Electric space heaters are a horrible way of providing heating though, as a system. But that wan't what the OP asked : /
 
  • #6
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Transformers can have efficiencies of over 99%
 
  • #7
Q_Goest
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Isn't superconducting wire 100% efficient at transfering electric power?
 
  • #8
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Yes, superconductors are 100% efficient at transferring power/storing electrical energy
but the op wants a component he probably doesnt mean a superconductor...:D
 
  • #9
sophiecentaur
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Actually, although an electrical water heater could be thought of as being 100% efficient, the whole 'system' won't be.You will either have to be heating up the kettle (or what ever), which is a waste or you will be losing finite amounts of heat to the surroundings.

A superconductor may be lossless but producing superconductivity involves the input of energy into the refrigeration system - so even that, when viewing the system as a whole, does not provide you with 100% efficiency.

The only way to eliminate loss is to do nothing!
 
  • #10
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Transformers can have efficiencies of over 99%
Yes somewhere i studied that transformers have the highest efficiency known to date.
 
  • #11
2,017
85
Actually, although an electrical water heater could be thought of as being 100% efficient, the whole 'system' won't be.You will either have to be heating up the kettle (or what ever), which is a waste or you will be losing finite amounts of heat to the surroundings.

A superconductor may be lossless but producing superconductivity involves the input of energy into the refrigeration system - so even that, when viewing the system as a whole, does not provide you with 100% efficiency.

The only way to eliminate loss is to do nothing!
Thats the line I was thinking along, it's why I said 100% utilisation and 100% efficiency are different things.
 
  • #12
sophiecentaur
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Yes: the term 'efficiency' actually refers to 'Useful' work / energy out.
When it comes to utilisation of energy, the human on a bicycle is not too bad, actually. Ine sarnie will take you a long way.
 

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