Human heat powered flash light by a high school teen (girl)

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taipei, taiwan & norcal
Well isn't she a bright little girl. So awesome. Very pretty too. I'll ask her to marry me in 5 years. Ha ha ha. J/k.

http://news.yahoo.com/blogs/this-co...hlight-could-change-world-182121097.html?vp=1

Teen Invents Flashlight That Could Change The World
By Andrew Lampard
February 25, 2014 1:21 PM

Ann Makosinski was just another teenager with another science project when she joined her local science fair in Victoria, Canada, last year. Her invention, a flashlight that is powered solely from hand heat, took second place at the competition.

Ann, 16, and her parents, both of whom are HAM radio operators and like to fiddle with electronics, were satisfied with that result.

“It’s a very simple project,” said Arthur Makosinski, Ann’s father. “It has four electrical components. Let’s move on and do something different.”

But had Ann left her project in Victoria, situated just 25 miles north of Washington State, the world may have missed out on a light source that doesn’t use batteries, solar power or wind energy.

Think about that for a moment: a flashlight that shines for as long as you hold onto it. No more scrambling for and chucking away AA batteries. It could have an immediate impact on more than 1.2 billion people -- one-fifth of the world’s population -- who, according to the World Bank, lack regular access to electricity.

Stunningly, no one on record has thought to use thermoelectric technology to power a flashlight. But for Ann, peltier tiles, which produce an electrical current when opposite sides are heated and cooled at the same time, were a convenient solution to a friend’s study problem.

Two years ago, Ann, who is half-Filipino, was corresponding with a friend of hers in the Philippines who didn’t have electricity. According to Ann, her friend couldn’t complete her homework and was failing in school.

“That was the inspiration for my project.” said Ann, “I just wanted to help my friend in the Philippines and my flashlight was a possible solution.”

Ann got to work. She remembered hearing human beings described as walking 100-volt light bulbs: “I thought, why not body heat? We have so much heat radiating out of us and it’s being wasted.”

After a few prototypes, she unveiled her “hollow flashlight,” so named because it has a hollow aluminum tube at its core that cools the sides of the peltier tiles attached to the flashlight’s cylinder. The other side is warmed by heat from a hand gripping the flashlight.

Ann spent several months designing the flashlight and figuring out its voltage conversion. Much has been written online about powering a flashlight with peltier tiles, but those devices used heat from candles and blow torches. Ann’s patent-pending prototype relies on hand warmth only and required that she make her own transformer, among other difference-making factors.

Art Makosinski remembers his surprise when Ann figured out how to light the flashlight’s bulbs at 20 millivolts: “I didn’t believe it, I had to inspect the circuit. I said what did you do here, do you have a hidden battery on the other side?”

At the behest of Kate Paine, her ninth grade marine biology teacher at St. Michaels University School, Ann submitted her flashlight into the 2013 Google Science Fair last spring. She promptly forget all about it. Thousands of kids apply from around the world. She said she didn’t think she had a chance.

A few months later, in September 2013, Ann was named a finalist in her age group. She travelled to Google’s headquarters in Mountain View, Calif., to present alongside equally impressive projects, like a cure for the common cold and a robotic exoskeleton. “I didn’t expect to win anything,” she said.

At the science fair’s gala night, Ann and Art mingled among top Google engineers, eminent scientists and some of the most innovative kids on the planet. Hers was the last name they expected to be called out the winner for her age group. When it was, Art almost dropped his camera. Ann floated to the stage as if welded to a conveyer belt; her face was frozen in shock.

Her prize was a trophy made out of Legos, a visit to the Lego Group headquarters in Denmark, and a $25,000 scholarship.

“I still have some of the same confetti that rained down,” said Ann. “Just an amazing experience and probably something I won’t experience ever again.”

When Ann returned to Victoria, she received a standing ovation at her high school’s Monday morning assembly. In the months since, she has given three TEDx talks and appeared on the “Tonight Show Starring Jimmy Fallon.”

"I think it’s a lesson that children can innovate," said Art Makosinski. "With the right incentive and environment, they can be quite innovative."

Many people have asked where she wants to attend university, expecting to her to name the likes of Stanford or MIT. Ann said she’s not thinking that far ahead; she needs to get through the eleventh grade first.

And then there’s the business of securing her flashlight’s patent and tweaking the prototype for market. At roughly 24 lumens, Ann’s flashlight’s brightness falls shy of commercial flashlights, which output dozens if not hundreds of lumens.

Of her efforts to increase her flashlight’s voltage efficiency, she said, “I want to make sure my flashlight is available to those who really need it.”
 
Very cool!
 
Yea I read that last night. Pretty interesting concept and really could be useful in developing countries.

Think they said the light was 30 lumens.
 
That could actually work on the handle bars on a bike. I'm not sure how good your grip would be but it'd be nice to not have to buy or constantly recharge the batteries for a bike light. If one hand generates enough power for a flashlight, imagine how much could be generated by two hands on your handle bars.

It could even be a good power source if it were mounted to an external controller or if the controller were built around a hollow tube. Heat from the controller is conducted by the outside of the tube while air is able to flow through the tube. You could even hook up a small PC fan to the front of the tube to pull air through it which would be good in high heat conditions like the summer time for instance. It would also be good for the controller because then you would have a heat sync to pull heat away from the controller.
 
Not to throw cold water on this idea but it's going to work a lot better in Montreal or Manitoba than it is in Manila or Mogadishu. Any place the ambient temperature is at or near human body temp there isn't going to be enough thermal differential to generate much if any electrical current.

That being said, it's a brilliant idea for those places it will work.
 
If you use this in a cold region, it will make you colder. http://www.instructables.com/id/Chillanator/

The story is humbug. Thermal electricty is an old story, the girl undoubtedly used existing parts, etc. I'll bet when she was 10 she heard the Sandra Loh 'Lohdown on Science' report on the radio about that very thing, then spent 5 years finding what she needed to make it.

http://www.perpetuapower.com/technology.htm

Power felt, for example: http://www.businessinsider.com/power-felt-feeds-off-your-body-heat-to-generate-electricity-2012-8

What's more amazing? The fact this year old story keeps getting recycled as though it's just happened? Or the fact that she won a scholarship for a tired old done to death peltier pump 'Fun with science' project?

http://www.instructables.com/id/Free-Light-using-Peltier-used-cooking-oil-and-Sola/
 
Actually I think it would work in high heat conditions. It's built into a hollow tube so that air passes through it to keep the inside of it cool. All you would have to do is move it up and down really fast to generate a cool current through the tube. So every time the light starts to go out you just shake it like a static flashlight.
 
marty said:
I might be wrong about this?

Blow 90° air on something and it will be 90°. Wind blowing on our body makes us feel cooler. Water on our body's also make us feel cooler.

Take heat from your body to make electricity, it will be cooler. As long as the minimum temperature required is met, there will be electricity. Go running with it taking heat from all one side of your body, while there will be some balancing that side will still be at least a bit cooler.

There's already things on the market to do this.
 
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