Re: Noorie Lantern

[Harmon Seaver <hseaver@cybershamanix.com>]

Crispin;
   Do a google search on thermoelectric generator. There are a multitude of
companies working on these, with quite a few actually for sale, and the prices
are dropping rapidly. For instance, here's just one of many where you can buy
these today. http://www.hi-z.com/  This is also the website that shows a 1kw
unit composed of many of the smaller cells   http://www.hi-z.com/websi07.htm
   There is also a sister technology that uses the *light* from a flame, not the
heat, which is also undergoing rapid development. Can't think of what it's
called at the moment (I'm only on my first cup of tea this am).
   I think generally these technologies are expected to rival prices for
solarelectric or undercut them shortly.


On Sat, Nov 16, 2002 at 10:57:10AM +0200, Crispin wrote:
> Dear Lantern users and lovers
> 
> I had a look at the page linked and I have one comment (other than you guys are all on the rright track):
> 
> I see that a comparison is made with the florescent tube which comes off looking very good compared with all the other options.  However, there is no mention made of a 'coiled' florescent tube that fits into a regular light socket.  They are very efficient and present a possible future for rural India.
> 
> In Southern Africa these bulbs, which cost a great deal of money - about $7 are promoted as an answer to energy comsumption as they last for ages and consume very little power.  I am not sure if it is true but it seems that they are about 35% efficient, maybe more.
> 
> It is not possible to use a wick of some material that instead of emitting light, emits charged particles that are able to 'light up' florescent white powders?  That way the burning fuel (whatever it is) could heat a wick that emits particles efficiently in the range that in turn drives a florescent tube.
> 
> The tube could be something like a hollow pipe, meaning a double-walled one with an air-evacuated centre portion.  The florescent coating would be in the outside of the inside surface.  This would slip over the present mantle and pick up radiation.
> 
> This type of two-stage excitation would give light from the original flame, the rare earth mantle and the florescing powder.
> 
> It also appear to me that burning anything cleverly (like producer gas) might be able to produce a conductive plasma that will allow for something clever to be done between stacked plates, such as generate enough power to charge a cell phone.  Charging phones is a major problem in rural areas where coverage by radion is far easier to get than power to charge the phones.
> 
> A lantern that charges a phone (very low power requirement) would sell imediately, whether or not it was pressurized at 2kg/cm^2 or much less.
> 
> Are there metal stacks available that will generate 6 VDC?  What happened to that talk last year about a stove in the western USA that was to produce 1Kw?
> 
> Thanks
> Crispin

-- 
Harmon Seaver	
CyberShamanix
http://www.cybershamanix.com

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