[Stoves] Charcoal production, improved

[adam u partner]

Dear Dr.Yury,
i just browsed your homepage mentioned below and I also
checked our correspondence from February 2006
but i could not find any discussions on the efficiency!

1) Concerning the efficiency of about %40:
In Kenya on Testrun No2 we used 690kg lelesha wood, deducted
15% Humidity = 97kg (humidity might have been more) and we come
to 595kg of oven dry wood
and we received 205Kg of charcoal. This gives a yield of about 35%.

in the case of India/ Pondicherry TestrunNo3:
640kg wet wood loaded, 20%water deducted = 512kg oven dry wood.
(work wood tree)
Charcoal received = 238kg,  This gives a yield of about 46%.
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2) I do not offer these low-cost retort kiln as "non-polluting".
i offer them as "more environmentally friendly" compared to
traditional carbonization!
And i mention that the company "Four seasons" found out that
retorts do contribiute with an enormous reduction of smoke
released into the atmosphere:
"....On average the reduction of pollution with a retort is 75% less
smoke than round steel kilns....."
http://www.fourseasonsfuel.co.uk/retorts.htm
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I also want to mention that these metal retorts which might have
double or less volume  that the "low-cost retort" (3m3)  are sold
for about 23.000 EURO, plus 17% VAT, plus transport !!!
A trained bricklayer can build one unit of "the low-cost retort"
for about 300Euro in countries  with low-labor costs.........

This in short
Chris ADAM

> Dear Chris ADAM,
> We had personal correspondence and it seemed to me, that I have 
> explained a state of affairs honesty. I regret, that you offer your 
> technology as non-polluting and economical repeatedly. We spoke about a 
> real output of coal from wood. I think, you could look standard 
> scientific manuals before to announce an output of 40 %.
> I regret
> Dr. Yury Yudkevich, main technologist
> "Bioenergy LLC"
> http://www.repp.org/discussiongroups/resources/stoves/Yudkevitch/charcoal/
>   
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