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Thread: Wind Farms Coming To The City?

  1. #16
    Chief Antagonist Ninjahedge's Avatar
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    Compressed air is stupid.

    Why don't they just use the windmills/turbines to pump water to a higher elevation? When you need it to be balanced, you release the water.

    Agreed water weighs more than air, but I think a water tank costs less than a bunch of compressed air tanks!

  2. #17

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    There is a wind mill farm with 10 1.5 MW turbines inside the city here in Lubbock, Texas and there is another large wind turbine separate from them inside the city. People said they would be ugly, but Lubbock is ugly, so no one did anything to stop it.

  3. #18

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    Quote Originally Posted by Ninjahedge View Post
    Compressed air is stupid.

    Why don't they just use the windmills/turbines to pump water to a higher elevation? When you need it to be balanced, you release the water.

    Agreed water weighs more than air, but I think a water tank costs less than a bunch of compressed air tanks!
    This has already been done here, water is pumped uphill into a higher reservoir by power generators running in reverse like pumps when there is extra wind power (at night), then it is released later on (around mid-day), the same pumps now act as the generator as water runs down to the lower reservoir. The higher reservoir is normally on a hill or mound of earth while the lower one is in an underground tank or on a lower elevation on the side of the hill. The problem is that a huge amount of water being pumped up a few hundred feet doesn't hold as much potential energy as one would think and the reservoirs are ugly.

    The compressed air idea has nothing to do with the mass of the air just as a the potential energy in a spring has nothing to do with the mass of the spring. It's about the amount of energy needed to smash those gas molecules close to each other.

  4. #19
    Chief Antagonist Ninjahedge's Avatar
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    I am aware of that, but there are also problems such as heat generation on compression and loss on expansion (unless that was used as a form of AC/Heat depending on the season).

    As for the reservoirs, I think it would work so long as they did it right. You are right in that they can be colossally ugly, but when a body of water is used for more than just a utility, it can become quite a pleasant thing (Central Park Reservoir...).

    What we really need are some major $$ going into superconductor capacitor development!

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