Gravity Powered Light

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RonM
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Gravity Powered Light

Post by RonM » Fri Jan 11, 2013 1:08 pm

Ok, here is an interesting little item I just ran across http://www2.electronicproducts.com/LED_ ... -html.aspx I hope this is available to the general public. Also try this link http://www.indiegogo.com/projects/282006. From the website - "realistic alternative to Kerosene lamps by harnessing the power of gravity". They are a UK company. This is the first I've seen it. I will look into what they are using to convert the potential energy to electric energy. Curious. Has definite possiblities for bp light. (pun intended) :D :lol:

Update: "One can pledge as little as $10. However, for a pledge of $50 you will get your own GravityLight to play with." Apparently indiegogo is like kickstarter - grass roots funding of interesting ideas. Similar to us stovies buying Zelph's stove's to help support his design of new stoves. (edit - except Zelph's stoves really work well.)

Update 2: from my back of the envelope calculations the numbers seem to be off. A white LED will require ~0.064W. Assuming a 20% conversion efficiency the generator would need to supply 0.32W. Over the supposed 1/2hr light time (1800 s) the LED would require 576 W*s. A 4.5kg (10#) weight dropping 1.52m (5ft) will produce 67 W*s.

Update 3: This idea won't fly - the numbers are off by about a factor of 4 to 8. Another great idea to help the third world that will wind up costing too much to produce too little effect - just like numerous stove ideas we have examined here.
Last edited by RonM on Sat Jan 12, 2013 7:32 am, edited 1 time in total.
"And the burnt Fool's bandaged finger goes wabbling back to the Fire"

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zelph
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Re: Gravity Powered Light

Post by zelph » Sat Jan 12, 2013 12:04 am

Reminds me of the inner workings of a grandfather clock.

Made me think of those shaka shaka flashlights that produce their own electricity for the led bulb. That would be someting nice for the thirdworld countries to keep the children occupied at night. It would be difficult for the kids to lift the bag-o-sand.

The grass/sappling huts might not be strong enough to support the bag.

I don't think they'll sell for just 10.00 They look too complex to go for such a low price.

An alladin kerosen lantern is highly efficient and gives off the same amount of light as a 65 watt bulb.(i have one for emergency light) China should make them available for the 3rd world countries.

So, every half hour you lift the bag up and start it going again.
http://www.woodgaz-stove.com/

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RonM
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Re: Gravity Powered Light

Post by RonM » Sat Jan 12, 2013 7:37 am

zelph wrote: An alladin kerosen lantern is highly efficient and gives off the same amount of light as a 65 watt bulb.(i have one for emergency light)
Wow! Those are really nice - but really expensive. Did you find something on Ebay or a Thrift store that is a little more reasonable? I had just a regular kero lamp from Y2K but the chimney got broken. I would like to find a mantle type kero lamp. They look like a great source of light. Is it possible to find white kero?
"And the burnt Fool's bandaged finger goes wabbling back to the Fire"

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zelph
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Re: Gravity Powered Light

Post by zelph » Sat Jan 12, 2013 10:43 am

I paid full full price for the aluminum base modle. I used it once in a power outage caused by a summer storm. Nice to have.

I use 100% pure odorless mineral spirits which is purified kerosene. Purified to the max :mrgreen: I buy it by the quart at Michaels' hobby and crafts store. I also use it in my mini kerosene stove experiments.

Come to think of it i can't remember where my shake flashlight is :? I made a flashlight using a mini bernzomatic butane torch. Incorporated a coleman lantern mantle in it's construction. I came across a photo of it yesterday on photobucket. It was an interesting tinkering project.
http://www.woodgaz-stove.com/

Perez Turner
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Re: Gravity Powered Light

Post by Perez Turner » Fri Jul 12, 2013 10:20 pm

I got some ideas and will try to follow this procedure to make something unique. This idea looks professional and have lots of attraction if we carefully attempt to introduce it with new features.
I sell scales

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RonM
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Re: Gravity Powered Light

Post by RonM » Tue Jul 23, 2013 12:57 am

Perez Turner wrote:I got some ideas and will try to follow this procedure to make something unique. This idea looks professional and have lots of attraction if we carefully attempt to introduce it with new features.
Sorry. No sale. :lol:
"And the burnt Fool's bandaged finger goes wabbling back to the Fire"

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zelph
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Re: Gravity Powered Light

Post by zelph » Tue Jul 23, 2013 2:52 pm

Look what someone went and did:

http://science.howstuffworks.com/enviro ... -lamp1.htm

It looks like the original idea never got the funding to go ahead with their project. :(
http://www.woodgaz-stove.com/

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