One magnet motor that does not break any thermodynamic rules

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Discussion Overview

The discussion revolves around the efficiency and practicality of a magnet motor, particularly one utilizing superconductive magnets. Participants explore theoretical aspects, potential limitations, and practical applications of such engines, touching on thermodynamics and energy conversion efficiency.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the efficiency of the engine when using strong superconductive magnets.
  • There is a suggestion that the mechanism may be a synchronized weak motor, prompting questions about its limitations.
  • One participant notes that superconducting magnets could enhance efficiency but questions why they are not currently utilized in motors, suggesting that the answer is not straightforward.
  • Another participant mentions that magnetic saturation of materials like nickel may limit efficiency more than the type of magnet used.
  • Concerns are raised about the practicality of using superconductors, which currently require liquid helium to function effectively.
  • References to external sources are provided, discussing the low energy conversion efficiency of certain materials, such as Heusler alloys, under specific conditions.
  • One participant speculates about the potential for this type of engine to power small devices, like mobile phones, in off-grid situations.

Areas of Agreement / Disagreement

Participants express a range of views on the efficiency and practicality of superconductive magnet motors, with no consensus reached on the overall feasibility or effectiveness of the proposed mechanisms.

Contextual Notes

Limitations include the dependency on superconducting materials requiring liquid helium, the unresolved nature of energy conversion efficiency claims, and the potential impact of magnetic saturation on performance.

Who May Find This Useful

Individuals interested in the theoretical and practical aspects of magnet motors, superconductivity, and energy conversion efficiency in engineering applications.

rolnor
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I am wondering how efficient this engine can get, I am thinking if one used a superconductive magnet that is really strong?
 
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Thread closed for Moderation...
 
Re-opening the thread for a simple scientific discussion...
 
rolnor said:
I am wondering how efficient this engine can get, I am thinking if one used a superconductive magnet that is really strong?

Questions for you:

1) What is Thermal/Thermo avout this mechanism?

2) It appears to be a simply synchronized weak motor. What am I missing?

3) Superconducting magnets in motors could be more efficient. Why aren't they used now? (The answer is not that scientists and engineers are missing something obvious)
 
This looks about as efficient as the bobbing duck engine
 
My first thought is that the magnetic saturation of the nickel is likely a more limiting factor than type of magnet.
 
The third question; Today its neccesary to use liquid helium to get a superconductive to work.
 
rolnor said:
The third question; Today its neccesary to use liquid helium to get a superconductive to work.
Correct! Yeah, not very practical for most motor application... :smile:
 
  • #10
Khashishi said:
Interesting. Too bad the energy conversion efficiency is so low, but still an interesting mechanism for some situations...
The theoretical energy conversion efficiency of the Heusler alloy was calculated to be 0.2% under an external field of 3kOe, increasing to 0.8% under a field of 15kOe.
 
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  • #11
berkeman said:
Interesting. Too bad the energy conversion efficiency is so low, but still an interesting mechanism for some situations...
Maby this type of engine can bee used to power a very smal generator to load a mobilphone where there is no electricity available? Maby at night when solarcells does not work?
 

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