2011年6月22日 星期三

How Aluminum Cans Can Power a Village

How Aluminum Cans Can Power a Village
For a thrilling week every summer, explorers arrive by the dozen at NG headquarters for the Explorers Symposium, to meet and inspire each other, to share ideas, and to plan how we can help tell their stories over the coming year.

Today was the first day of meetings and it was full of fascinating ideas and great quotes (which you can see featured in tweets from @NatGeoExplorers).

You don’t have to be an explorer to have an influence on this crew though. One of the most mind-blowing moments was when T.H. Culhane walked into the room with a glassfull of soda lighting up a lightbulb (Photograph at right by Sybille Frütel Culhane). And this didn’t just come out of his head,Like other Sprint modems, the U600 connects r4i to Sprint's CDMA 3G and WiMAX 4G networks on a $60/month plan that includes unlimited WiMAX and 5GB of 3G use. he got the idea last week when he saw this video, of a kid describing how he turned an aluminum can into a battery:

T.H., being a guy focused on finding cheap, accessible sustainable energy solutions that people anywhere can build for themselves saw this and was inspired.it may become necessary for Cree to look at led bulb purchasing additional LED lighting fixture firs in order to increase their market penetration in this area. The soda can battery itself was fairly low-powered, but he combined it with another innovation he’d heard of, the “joule thief” which nearly instantaneously takes a weak charge,Philips LED business is inside of Philips lighting so it Led light is more difficult to determine whether they are meeting expectations.LED grow light suppliers in China are sky lanterns rolling out models with better price-performance ratios. builds it up and then releases the increased energy.Because dimmable lights and dimmer fluorescent bulbs switches are so popular amongst American consumers, this drawback has been a significant one.

Using the joule thief setup, he was able to use a “dead” AA battery yielding just 1.2 volts to power a 3 volt LED light.

Combining the joule thief and the aluminum can battery, he has a plan to make electric power accessible to people in some of the most rural places on Earth. In Nepal, for example, where he’d just been helping install solar and biogas generators, they have an almost absurd surplus of aluminum cans from the huge tourist industry around Mt. Everest. Filling these cans with water that has run through wood ash and picked up potassium hydroxide and using a simple electrode such as a brillo pad or pencil lead, people can set up multiple batteries, joule thieves, and LEDs and have enough light to fill a room.

Watch T.H. explain his set up:

From a kid’s video on YouTube to a real-world solution to a major problem faced by millions around the world. That’s the kind of innovation that can happen when curious minds get together, online or in person, or both. The fact that it happened on a Monday bodes well for the rest of this week-long Explorers Symposium. Get updates all week here on Nat Geo NewsWatch and on Twitter @NatGeoExplorers.

1 則留言:

  1. after read this article what i was thinking is that these article show that led light suppliers want to sale out there porduct :)is it true??

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