Can We Achieve 100% Efficiency? Renewable Components Explored

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Discussion Overview

The discussion centers on the concept of achieving 100% efficiency in components, particularly in renewable energy contexts. Participants explore various components and systems, debating the definitions and implications of efficiency versus utilization.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • Some participants assert that no component can achieve 100% efficiency, emphasizing that 100% utilization does not equate to 100% efficiency.
  • Others propose that certain components, like electric space heaters, can be considered 100% efficient in converting energy to heat, though this is contested in terms of system efficiency.
  • Transformers are mentioned as having efficiencies exceeding 99%, with some participants noting this as one of the highest efficiencies known.
  • Superconducting wires are discussed as being 100% efficient at transferring electric power, but concerns are raised about the energy required for their refrigeration systems, complicating the notion of overall system efficiency.
  • Participants highlight that while individual components may be efficient, the entire system often incurs losses, suggesting that true 100% efficiency is unattainable.
  • One participant notes that the term 'efficiency' refers to useful work or energy output, indicating a nuanced understanding of how efficiency is measured.

Areas of Agreement / Disagreement

Participants generally disagree on the possibility of achieving 100% efficiency, with multiple competing views on what constitutes efficiency and how it applies to different components and systems.

Contextual Notes

Discussions reveal limitations in definitions of efficiency and utilization, as well as the complexities involved in evaluating system-wide efficiency versus component efficiency.

FeDeX_LaTeX
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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?
 
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No such thing as a 100% efficienct component.

And remember
100% Utilisation =/= 100% Efficiency.
 
You can convert electrical or mechanical energy to heat with 100% efficiency.
 
Yes, DanielR implies, an electric space heater is 100% efficient.
 
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 : /
 
Transformers can have efficiencies of over 99%
 
Isn't superconducting wire 100% efficient at transfering electric power?
 
Yes, superconductors are 100% efficient at transferring power/storing electrical energy
but the op wants a component he probably doesn't mean a superconductor...:D
 
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
Dadface said:
Transformers can have efficiencies of over 99%

Yes somewhere i studied that transformers have the highest efficiency known to date.
 
  • #11
sophiecentaur said:
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
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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