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145 results found
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| Trap wind for turbines 
I was reading how in certain places if two tall buildings are built close together they trap wind and send it rushing through the passage between them.My idea is not to build turbines between skyscrapers as is often suggested but to build structures outside cities whose sole purpose is to trap wind and send it rushing through a narrow passage in which there are numerous turbines. The turbines can be built into the structure so only the actual turbine bit sticks out.Given how much the turbines cost these structures could be built relatively cheaply out of concrete or maybe even plastic or wood on a metal frame.(i'm thinking flat plastic panels)Unless i am wrong this should increase the output of each turbine dramatically.Reward: acknowledgement 
There are 3 replies to this idea
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| Citywide geothermal heat pumps
The most efficient means of heating a house is by using geothermal heat pumps. Check the link below:
http://www.eere.energy.gov/RE/geo_heat_pumps.html.The air going into your house runs through an underground tube, and becomes warmer. I.E. less energy required to get the air warmer. Heat pumps are kind of expensive to build, and it takes about 5 years for the energy savings to pay for the initial cost. Most people move within 5 years so the incentive isn't there to install them. City lots are mostly too small for geothermal heat pumps, so city governments should automatically install them under streets just like sewers. Homeowners would just plug into the common heat exchanger, and heating/cooling costs/energy use would decrease dramatically.Reward: I'd like a city to name a park Bluecube Park.
There are 6 replies to this idea
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| Reuseable Flood Barrier
The current practice of guarding against flooding into buildings is to fill and stack sandbags. This is labor intensive and presents the problem of disposing of the fill sand/dirt. The suggested invention is an inflatable hose-like vinyl/plastic/rubber material that could be uncoiled around the structure and filled with water to act as a barrier. Inasmuch as the hose is filled with water, it could float away when surrounded by water. Therefore, the hose is actually triangular shaped with heavier material bonded to the base side. The barrier could be emptied and re-curled after use. The cross-section design, weight and type of stabilizing material and ability to make connections of sections are variables for different heights of protection.Reward: Seeing people triumph over tragedy would be great. Accolades would be nice, too.
There are 10 replies to this idea
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