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Pressure as a renewable source of energy

  1. Sep 26, 2013 #1
    I am designing a machine to produce electricity , using pressure as a source of energy.
    So my question is simple, is there any machine or device that are used to produce electricity from pressure?
     
  2. jcsd
  3. Sep 26, 2013 #2
    Yes, google piezoelectrics.
     
  4. Sep 26, 2013 #3

    Vanadium 50

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    Note that anything that leaves the pressure unchanged will not produce electricity.
     
  5. Sep 26, 2013 #4

    SteamKing

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    Central station steam plants use lots of pressure to make electricity, though not directly of course.
     
  6. Sep 26, 2013 #5
    I know about piezoelectrics , they are not considered as power generators though, i am talking about a generator , to generate electricity on a bigger scale, like solar or wind
     
  7. Sep 26, 2013 #6
    doesn't a steam plant need a source of energy to produce steam ?
     
  8. Sep 26, 2013 #7

    SteamKing

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    They sure do. But pressure doesn't exist by itself, in a vacuum, so to speak.
     
  9. Sep 26, 2013 #8
    Pressure by itself cannot be used to power anything. For that you need 2 regions of different pressure.
     
  10. Sep 26, 2013 #9

    russ_watters

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    Hydroelectric dams (usually) also utilize the pressure energy of pressurized water to produce energy. Are we detecting a pattern yet?
     
  11. Sep 26, 2013 #10

    russ_watters

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    And something flowing between them.
     
  12. Sep 26, 2013 #11

    SteamKing

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    It's like saying, I'm gonna use me some high temperature to make an electric generator.
     
  13. Sep 27, 2013 #12
    Ok , thanks for your help
     
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