Popular Mechanics just held its yearly Breakthrough Conference, and one of the winners was the Wind Belt, an invention we've not seen before. The Wind Belt is a new approach to wind energy production and an innovative approach that could radically change the cost curve downwards, especially within the developing world and in off-grid environments.
Working in Haiti, Shawn Frayne, a 28-year-old inventor based in Mountain View, Calif., saw the need for small-scale wind power to juice LED lamps and radios in the homes of the poor. Conventional wind turbines don't scale down well—there's too much friction in the gearbox and other components. "With rotary power, there's nothing out there that generates under 50 watts," Frayne says.
Having been to Haiti, I think the idea of figuring out affordable renewable power for the developing world is greatly appealing. To alleviate poverty and, well, to help leapfrog the developing world onto a better development path. In the Pop Mech vid, Frayne talks about being originally inspired by a video he saw in high school of the Tacoma Narrows Bridge. Indeed, if wind can create enough power get that bridge waving like a jump-rope, there must be away to get the power out.
So Shawn built a kind of birdge out of taut kite fabric. The fabric vibrates in the wind, and a magnet, attached to the fabric, creates electricity at one end of the device. He says that, in a 10 mph wind, the generator is up to 30 times more efficient than the best rotary turbines.
These are some impressive claims. That much more efficient? But, at what cost? Well, ridiculously cheap. Just some fabric, a magnet and some copper coils does it. Frayne guesses that, for the developing world, the Windbelt could cost as little as a few dollars. It's cleaner, cheaper, and easier to fix than any other method of generating power. That is, as long as the wind keeps blowing.
Not only inexpensive and replacing some of the dirtiest power uses, but something that locals can repair with little problem. Looks like Popular Mechanics might have chosen a real winner. Highly recommended, the Wind Belt video.
Via Jetson Green. And Popular Mechanics