62 results found displaying 22-24
    
Skoop
 USA
City Windmill Printer Friendly Version
Design a windmill that adjusts to the amount of wind that is blowing. If there is not much wind then not much electricty is going to be produced, but it is still running. Most windmills need 6PMH to start and then max out. As the wind gets stronger the tension should get stronger to produce more power. If the wind is low the tension should release so that a small amount of power is being produced. The actual design of the windmill should not be like a normal one, it should be designed to rotate off of the smallest amount of wind.
Reward: I wouldnt mind my house running off of this. 

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64°

    
bucki107
 USA
Wild Crier Printer Friendly Version
The Wild Crier would be used to protect your home from a wild fire. Instead of a sprinkler system inside the house, this one would be set up on the exterior of the building. Sprinkler heads would be placed in various positions outside the house. There would be heat sensors on the perimeter of the property that would prompt the sprinklers to douse the house in water or flame retardant chemicals before the fire reaches the house. Alarms would also notify police, fire, and relatives of the situation.
Reward: To save one house from burning 

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37°

    
builder1
 USA
Driveway/walkway ice remover Printer Friendly Version
How many of you have seen the sprinkler systems watering lawns in the summer? Well, take that same idea and have the sprinklers lightly misting sidewalks and roadways with a brine solution. I know it will not work under a certain temperature but at least I will not have to get out and shovel. You could modify the sprinkler heads to run in series at a low pressure ( which the brine will not freeze) and when a sensor detects a snowfall, the pressure raises allowing the sprinkler heads to activate.
Reward: 4 goody gum-drops and one of these systems. 

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59°

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