Re: lanterns

[Peter Singfield <snkm@btl.net>]

At 12:09 AM 11/19/2002 -0300, you wrote: 
>>>>
Our group works in mountain areas in high  latitudes, betwen 35º and 55º S,
daylight in winter varies from 8 hs in the  north to 4.5 hs in the south
end, so lighting is a concern. (Open fires  lights!!) HBLED,
style="FONT-SIZE: 12pt; FONT-FAMILY: Arial; mso-fareast-font-family: 'Times
New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language:
EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">high
brightness LEDs,  seems to  be an appropiate solution (See
http://www.lightuptheworld.org/ )  Thermoelectric generators could be in
many cases a better power source than  PV panels,  given the power reqs of
HBLEDs (1 W HBLED gives 40  lumens!!). ( In fact our most cost effective
power source is a pico-wind generator, the area has quite strong and
regular winds but.... people are clever and most houses are built in wind
protected locations!!)  Regards. Roberto. 

***********

Dear Listers and Roberto;

Here are some urls that should help you all understand what Roberto is
talking about:

http://www.nichia.co.jp/whiteled50-e.htm

http://www.lightuptheworld.org/Pages/Wled.htm

Browse around.

Second -- can't remember which list we covered this subject in depth -- but
thermal recovery stacks for lanterns is not really here yet.

The super LED is though.

To enter the market place Roberto discusses -- you have to do better than
the cost and reliability of a small solar panel and a small gel pack lead
acid battery.

Or indeed -- the small wind mill.

And either system making light using WLED's

You know what?? Hard to beat!

Roberto -- have you folks down there checked out the Chinese made solar
panels yet??

And last -- an Australian acquaintance of mine -- met here in Belize -- is
presently in China.

We are trying to raise interest in China producing these specialized
batteries at a cost 3rd world can afford.

Start here: 

http:/www.ceic/.unsw.edu.au/centers/vrb/overview.htm

Then here:

http://pei.pennnet.com/Articles/Article_Display.cfm?Section=Articles&Subsect
ion=Display&ARTICLE_ID=143512&KEYWORD=vanteck

If formatting breaks that long url up:

http://pei.pennnet.com/Articles/Article_Display.cfm?

Section=Articles&Subsection=Display&ARTICLE_ID=143512&KEYWORD=vanteck

Join those two lines --

Now -- after years spent on these lists dreaming the impossible dreams -- I
wish for a simple old style Lister diesel -- 1/2 HP -- producing a
continuous 200 watts --

Hand start -- no electrics -- 650 rpm (so it lives for ever) -- no water
pump or fan belts (tank/reservoir cooled)

Due to the "squish-head" design it can burn any veggie oil -- straight --
including rendered animal oils -- as fuel.

In the tropics especially -- there are many oil trees -- easy to plant --
that even on a small property will produce sufficient oil for that Lister.
Coconuts -- palm oil trees -- etc.

200 watts would supply lights for how many houses Roberto??

At least 20!! Even using the new fluorescents! And more using super LED's

I believe that Lister can be produced -- in India -- complete with
alternator -- for Less that $200 US per unit.

So -- $10 per house.

You do not need batteries -- run veggie-diesel when you need lights.

That beats solar -- and even micro windmills -- 

How much oil per hour for 200 watts power??

Say a 1/2 HP mini-Lister

Say 50 grams per hour --

"Specific Fuel use -- g/k.W.h. -- 255 gms"

Say 20 hours per liter --- 200 watts

Ten "wild" coconuts -- if good coconuts -- five.

A single "good" coconut tree will yield over 120 coconuts per year.

One liter of oil will light  -- at say 4 hours per night -- 20 houses for
five nights.

That is five "good" coconuts.

That tree will light 20 houses as described for 120 days.

Plant three trees and you have spare oil ---

Feeling the earth touch your feet yet folks??

And last ref -- many companies in India are still making "copies" of old
Style lister Diesels.

Here are a couple of examples -- specs and all.

Six HP models -- the smallest presently being built -- can be purchased for
less than $300 --

That quoted to me from:

www.lovson.com
www.lovson.co.in

And another supplier is:

http://www.amproexports.com/lister-diesel-engines.html

nice pictures and complete specs there.

How many houses could one light with a 6 HP Lister running on Coconut oil??

I have been operating one of these old style Listers -- a two cylinder 12
HP model -- imported from India -- for 3 months now. Talk about maintenance
free -- 

Kerosene is highly discounted here for cooking/lamp fuel -- can't be used
in a normal diesel -- but runs fine in this Lister.

I have not tried it on coconut oil yet -- that product is worth to much to
burn as fuel. The sale of one liter pays for many liters of kerosene.

But no matter which way you slice it -- impossible to beat tree oils for
"power" in the tropics. 100% "green" besides!

The "trash" from the oil extraction process makes a very good animal feed
as well.

Not dreaming here folks -- doing it.


Peter Singfield
Belize


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