![]() ![]() Main goal was to learn, secondary goal was to have a small setup to charge my phone, kid's toys, tablet, small devices, some lighting, ect. ![]() While the ultimate goal of having a few wind turbines down the road, with enough output to fully supply power to my house, would be awesome, it's less than likely. Goals for the project were to spend as little money as possible and do as much construction from scratch as I could. behold the jankiest homemade wind power setup you've ever seen! I've learned enough (still so much more to learn) to know that at some point in the next couple of years, I'm sure I'll be breaking down and finding some secondhand solar panels to stick on my house and get some use out of these thousands of 18650's you folks are helping me process. And yet, building wind generation just had such an appeal to me for the last few months. ![]() So the engineers at Sandia are trying to address a real design problem with their AeroMINE solution-and just like the Wright brothers, their solution lay inside a wind tunnel.I got on the forum for all of it's awesome resources having to do with using secondhand lithium cells, and I know that nearly all of the readers are solar users. A rooftop of unidirectional turbines will only exacerbate the energy output gulf between a windy time and a calm time. While all the turbines could be lined up in the exact same orientation, so their “jumping jack” arms would never cross, the appeal of large turbine fields is that the turbines are turned in various orientations in order to capture the most wind. Trying to make uniform turbine speed would lose energy on the lower and higher end. Out of sheer curiosity, how would that work?Ī curious experimenter might try to make some kind of microswitch that would only let the turbine turn beginning at a certain time each minute, but the turbines would all need to turn at the same speed for that to work. Trying to organize them to cooperate in higher density would require some finagling and whimsical programming that may not be possible even if people wanted to do it. There’s no way to synchronize traditional turbines, because they respond to the wind only. Below the roof, a short pipe leads to a fully enclosed turbine. Air rushes through a narrow channel between the two blades, creating a wind tunnel effect. To do this, they made pairs of blades that resemble airplane wings and stood them together in such a way that wind flows around and amplifies both airfoils. So engineers at Sandia decided to change the paradigm for wind power in order to build something that is compatible with rooftops. How many turbines can do “jumping jacks” on this roof without hitting each other? Even if the turbines were safely spaced, their huge motions cause noise and vibration and require tons of maintenance. You'd run into the same problem trying to put wind-power turbines on a roof. Have you ever been part of or observed a gym class group doing jumping jacks? People start too close together and immediately spread way out so their arms can all clear each other. Instead, they’re using airfoil principles to essentially cover roofs in static chunks of airplane wings. Researchers at Sandia National Laboratories have put aside infeasible almost-plans to install tiny wind turbines on homes, because they say the logistics just don’t work. Wind rushes between the airfoils and powers a smaller, more concentrated turbine below the surface.Ī new airplane-inspired solar technology could put wind power up on your roof.Powerful wind turbines work great in giant empty fields, but not on your roof.Twin airfoil blades generate powerful winds in a new rooftop hybrid solar setup. ![]()
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