Modern Flywheels: Energy Storage at 90000 RPM

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Discussion Overview

The discussion revolves around the energy storage capabilities of modern flywheels, particularly those utilizing magnetic bearings and advanced materials like bamboo fibers. The focus includes theoretical implications of high-speed operation (up to 90,000 RPM) and concerns regarding safety in the event of failure.

Discussion Character

  • Exploratory, Debate/contested

Main Points Raised

  • One participant mentions a flywheel made of bamboo fibers capable of spinning at 90,000 RPM, suggesting it could store enough energy to power a large farm for a week, though the energy capacity in kilowatts is unspecified.
  • Concerns are raised about the safety of such high-speed flywheels, with one participant likening the potential failure to having a large bomb nearby, questioning the consequences of a failure at such speeds.
  • Another participant requests a link to the original article for verification, indicating skepticism about the claims made.
  • A link is provided to a website discussing flywheel failures, although it does not directly address the specific flywheel mentioned.
  • One participant acknowledges difficulty in recalling the source of the information, indicating it may have been from an older issue of Popular Mechanics or a similar publication.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the safety and feasibility of the flywheel technology discussed. There are competing views regarding the reliability of the claims made and the potential risks involved.

Contextual Notes

The discussion lacks specific details about the energy capacity of the flywheel in kilowatts and does not clarify the assumptions behind the safety concerns raised. There is also uncertainty regarding the source of the initial claims.

craynewhope
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There is much today about the energy storage capacity of magnetic bearing Flywheels. One I read about was made of bamboo fibers and could be spun up to 90000 rpm at that time not even carbon fiber could take that speed. The article said when the wind stopped there was enough energy stored in the wheel to operate a large farm for a week. They did not give a clue what that meant in KW. To me this would be like having a large bomb near my home. All other materials failed and disintegrated. At much lower speeds. as a guess what do you think would happen if one of these failed at such speed?
 
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Please post a link to what you are talking about, we cannot guess.
 
http://www.aspes.ch/faq.html#Is%20it%20dangerous

No idea about your flywheel, but this is one failure.
 
Last edited by a moderator:
sorry I think the article was in an old issue of popular mechanics pop sci can't remember how long ago, I will try to find out.
 

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