Schooling fish, it turns out, have a lot to teach us about setting up wind farms. That’s the conclusion reached by John Dabiri, a fluid dynamics expert from the California Institute of Technology (Caltech). One of the biggest current problems with wind farms is the large land area that they require - if you place the turbines too close to one another, they will be adversely effected by each other’s turbulence. By applying principles learned from observing fish, however, Dabiri thinks he might have found a solution.
First off, he is not using the common type of wind turbine. What we’re used to seeing are horizontal-axis turbines, with the big windmill-style blades that spin in a circle perpendicular to the ground. Dabiri is using vertical-axis turbines, that look not unlike an old-school lawnmower (or combine) reel standing on one end. Because they don’t have big blades sweeping circles in the air, they can be more densely-spaced than horizontal-axis machines.
One of the first things Dabiri noticed with schooling fish was that the vortices left behind individual fish sometimes rotated clockwise, and sometimes counter-clockwise. In traditional wind farms, all the turbines spin in the same direction, so they all generate the same direction of vortex. Based on this observation, he plans on alternating the spinning direction of neighboring turbines, to see if they actually benefit from the alternating vortices.
Dabiri also noticed that the fish and their vortices were arranged in a staircase pattern relative to one another. Again, this runs contrary to most wind farms, where the turbines are placed in neat rows. By conducting a field study incorporating closely-spaced, staggered vertical-axis turbines spinning in alternating directions, he hopes to show just how much more efficient wind power can become. According to Caltech's computer models, he believes his set up could be up to ten times more efficient than traditional models.
“Our goal is to demonstrate a new technology that enables us to extract significantly more wind energy from a given parcel of land than is currently possible using existing methods," said Dabiri. "We want to take advantage of constructive aerodynamic interference between closely spaced vertical-axis wind turbines. Our results can potentially make better use of existing wind farms, allow for wind farms to be located closer to urban centers - reducing power transmission costs - and reduce the size of offshore installations."
I agree with your opinion somewhat. Solar power( photovoltaics, thermal, ect), wind and tidal, can store energy by different kind of storing methods. Batteries, super hot salt(for solar heating systems; check out the one in Spain), hydrogen are few candidates. These technologies are currently in use. If scientists succeed in nuclear fusion, we could possibly solve all our energy needs for our main electricity.
One thing though: Nobody on the planet uses electricity directly, they all only use the effects thereof.
Electricity is a awesome carrier of energy and can easily and very efficiently convert to other forms of energy, but that is exactly my point: we only use every other form of energy, and consumption wise we use most energy for heating/cooling (or climate control!! ;) for which there are many locally available alternatives. For example heat recovery ventilation with proper building insulation standards, and 3m deep ground coupled heat pumps with CHP backup running off Biogas. See my explanation about biogas/methane in http://www.gizmag.com/electrode-materials-hydrogen-fuel/15118/
I believe the problem with climate change is a social one, not a technological one. We have the technology but there is a lack of willingness or incentive to use them. This is especially so if our lives are only focused on obtaining money (and the supposed power/security it provides) and as long as sustainability is considered costly, we will find it difficult to change.
You can paraphrase my above comment to: Nobody on the planet needs money directly, they all only use the effects thereof.
Maybe we should re-assess our goals and value systems to one that is based on the effects (products and services) rather that the accumulation of nearly 'worthless' paper. I sincerely hope we come to this realization before the rest of the unindustrialized world fully develops our predicament into the un-sustainability of mankind on the planet.
The vortex energy does have potential of its own.