63 results found displaying 43-45
    
avh
 Netherlands
Many wind turbines, one generator Printer Friendly Version
Current wind turbines are EACH equipped with a generator and a gearbox. We know large generators (such as used in electricity power plants) are more efficient, would it make sense to connect an array of wind mills via driveshaft to one large generator on the ground.
Advantages:
1) high(er) efficiency generator
2) use only one big generator, not many small ones
3) big generator on the ground is easy to maintain (no climbing in towers)
4) individual wind mills can be cheaper (basically rotor, nacelle, tower and driveshaft)
5) total cost of such a wind energy cluster may be cheaper.
Obviously some energy is lost in transporting mechanical energy via driveshafts. But since wind itself is free and if the total cost per generated kW is cheaper in this configuration - it might bring down the price per kW in this cluster configuration.
Reward: I believe that any idea that can help our civilization to survive the inevitable fossil fuel energy crisis should be voluntary donated asap. If this proves to be one - please use it! 

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rabuc
 USA
Home recycler Printer Friendly Version
Develop a home recycler which will take all of your recyclable material and crush, grind, reduce, compact and store the material until you are ready to dispose of. I suggest the following criteria:
- Items to dispose of - wood, plastic, glass, metals
- Must be a system inexpensive enough for the average home
- Must be easy to operate and by one person
- End product must be ready to dispose of, preferably able to sell the product to local recycling establishment.
Reward: I'd like ot participate with anyone that would like to develop this concept further 

There are 6 replies to this idea

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32°

    
AaronBurns
 USA
Smokeless Heat Proof Cigarette Case Printer Friendly Version
Like any smokeless cigarette you need only slip your standard cigar or cigarette inside a tube with screens at both ends and one end you light while the other snaps shut for inhaling and could come with an optional filtration system to further make a "So called" safer smoke!
Reward: Too see second hand smoke gone! 

There are 3 replies to this idea



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32°

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