The micro wind turbine is certainly a remarkable feat of skill, or something.
BUT the question of it recharging any portable electronics is more simply answered. If the efficiency were to be 100% then all we would need to do is find the energy that it has available in an airstream the size of the turbine blade, and determine the current that would provide at a voltage adequate to charge a battery. To make the calculations simpler we assume 100% efficiency in all of the conversions. The answer is that while it may possibly be able to charge a battery for some very low powered monitoring device, such as an outdoor temperature sender, it would be quite worthless for anything similar to a phone of any kind.
Nice try, but no prize. And please don't mislead us with false titles.
All other concerns aside, it seems like they'd be easy to contaminate or destroy with a careless touch. You'd have to filter the chunks out of air going past them, which would reduce the air velocity and raise the cost of operation, but you'd still have gaseous contaminants that could eventually cause corrosion. Perhaps the best use would be inside a sealed container with sides that move with barometric pressure change, forcing "wind" through a small orifice and past a tiny field of these. Like a watch.
Some arithmetic is called-for before deploying these. The power generated by a small patch of them might be enough to power a watch or a microprocessor in near-standby operation. But I don't think a pocketable patch of these is going to charge up a modern-day cellphone.
A middle school team from Rochester, Mich., has again nabbed the grand prize in the annual international Future City Competition, which drew students from 37 regions of the United States, as well as from England and China.
The word “smart” is becoming the dumbest word around. It has been applied to almost every device and system in our homes. In addition to smartphones and smart meters, we now hear about smart clothing and smart shoes, smart lights, smart homes, smart buildings, and every trendy city today has its smart city project. Just because it has a computer inside and is connected to the Web, does not mean it is smart.
Are you being paid enough? Do you want a better job? According to a recent survey Manpower released just before Engineers Week, employers and engineers don't see eye-to-eye about the state of US engineers' skills and experience.
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