Superconductivity Unity Device

Discussion in 'Feedback and Suggestions' started by SiegeX, Jan 4, 2005.

  1. SiegeX

    Thread Starter Member

    Jul 22, 2004
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    In the Superconductivity chapter there is the following quote

    The part that I question is the to part highlighted in bold. Is this not exactly what scientists today are trying to do with Fusion Reactors? They are trying to get more energy out than what they put in. To my knowledge they have not yet been able to break-even but when they do (and I believe they will) would this not constitute as an "over-unity device" ?
     
  2. haditya

    Senior Member

    Jan 19, 2004
    220
    0
    <_< as far as my knowledge goes on nuclear reactors(and mind u it is very limited) energy produced is less than the energy supplied...of course when we talk of energy we mean mass and energy...which are equivalent forms
    in other word all logic prohibits the making of a over unity device. :)
    but again modern physics and logic never went hand in hand :p
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Hi,

    The functional fusion reactor will produce enough energy output to sustain the magnetic containment fields and have a fractional excess left over to do useful work besides. To become an over-unity device, it would have to produce more energy than could be supplied by fusing all the hydrogen nuclei present.
     
  4. SiegeX

    Thread Starter Member

    Jul 22, 2004
    20
    0

    Thank you both for your input, that makes alot of sense.

    But now that I reflect upon the original quote in my first post, I believe that a superconducting ring of current is not a perpetual motion machine because energy is required to keep the ring in a superconductive state. That energy being the necessary work to compress nitrogen gas into liquid N2 which is then used to cool the ring into its superconductive thermodynamic state. Without additional N2 ( and thus additional energy ) the superconductivity atribute would seize to exist.

    Comments?
     
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