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flywheels to balance the grid

Discussion in 'Energy, Environment, and Policy' started by doug, Jun 17, 2008.

  1. doug

    doug Administrator / Head Moderator

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  2. doug

    doug Administrator / Head Moderator

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    #2 doug, Jun 24, 2008
    Last edited: Jun 24, 2008
    One megawatt of grid storage, 10 big flywheels | Green Tech - CNET News.com
    [​IMG]
     
  3. doug

    doug Administrator / Head Moderator

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    Mass. company’s spinning flywheels to store, pace electric energy and make grid greener

     
  4. johnr

    johnr Member

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    Interesting stuff. In the quest to improve the reliability and efficiency of the electrical grid, and reduce its environmental impact, it seems these flywheels will be a big help - but I'm sure this is something that's typically overlooked by those of us who are not in-the-know. Thanks for sharing, Doug.
     
  5. dpeilow

    dpeilow Moderator

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    This isn't that new an idea. One of the datacentre sites that I evaluated for our current project was using flywheels as UPSs. It sounds like this company has refined the technology a little, though.

    This shows that some datacentres have installations that are of the same order of magnitude as the proposed demonstration plant.
     
  6. edo

    edo Member

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    You're right, its not new. What's new are the technologies that rival Li-ion
     
  7. doug

    doug Administrator / Head Moderator

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    No, nothing new. I made this thread about a year ago (and another more recently) since grid storage is becoming more important with the increased use of intermittent renewable energy sources, such as wind and solar.

    As a physics guy, I like flywheels since they're relatively simple and something I can thoroughly understand (batteries on the other hand... ). As mechanical devices, I wonder how long they last in practice. These flywheels are a lot like the turbomolecular vacuum pumps I've used. They're happiest at a constant speed, spin in vacuum at tangential velocities above Mach 2, and fail really spectacularly.
     
  8. SByer

    SByer '08 #383

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    Video or it didn't happen! ;-)
    Really, I can just imagine, and I think it's be cool to see from an "I love explosions" angle.

    Of course, in saying "rival Li-ion", we know why it's unsuitable for mobile applications, right? That would make a really funny video, though...
     
  9. edo

    edo Member

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    Are you referring to the Gyroscopic effect? Actually, I think I remember there being some buses using flywheels to store electricity.

    The gyroscopic effect can be counteracted by using counter-rotating flywheels. then you can get some interesting effects by having a control to unbalance them. (talk about cornering:biggrin:)
     

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