[Stoves] RE: Henson Center Fiure Burner System; Was: Re:improving charcoal stoves

[jean-françois Rozis]

Dear all of you,

a brief answer before resting a while..

charcoal stove in Cambodia...we have engaged a war against illegal charcoal
for household cooking: 90 000 tons/year, equivalent forest destroyed (not
any forest management..)
so first action we are undertaking is to reduce charcoal consumption by very
large dissemination of roughly 100 000 stoves (cost 4 US$ compared to 2 US$
traditional , win-win supply chain to make producer-middlemen-retailer-user
interested in the business) saving 20%-25% in the field, in coming years
100% target population. Ok we are just wining this fight, that can reduce up
to 70 000 tons/year.
On other hand, we are starting to make recognize a sustainable charcoal
named green charcoal with support of Forestry Administration (selling carbon
credits to pay part of certification staff, selling wood vinegar obtained by
condensing pyrolytic gases), we hope in coming years (5 to 10) produce up to
15-20 000 tons/year, so it remains 50 000 tons/years.
We hope also  in urban area, the consumption of charcoal will be reduced
(LPG or other) in coming years.

Maybe at the end we have to fight with 30 000 tons/years for the future
mainly for the poorer part of population (charcoal price at that time will
increase, I hope so, we will make all our lobby for that...), so we want to
develop for rural or peri-urban biomass gas stoves (T-LUD or other), a new
generation in relation with waste biomass valorization, specific tree
planting activities (yet in development, Cambodia has a so big potential by
help of its climate..), to encourage to use efficiently specific available
and cheap sustainable biomass and forget for poorer to use charcoal (the
current situation becaus of very low price of charcoal compared to wood!!!)

so developing a new generation of charcoal stove in Cambodia seems not the
good weapon we need in this war. Sorry to speak like a army guy, I'm full
pacifist, but it's a real fight to avoid deforestation in Cambodia, in term
of energy efficiency and interest to plant locally energetic biomass only
last generation of stove bringing feeling of modernity and high comfort can
permit to have some hope of succes...

To start a new generation of charcoal stove and have same win-win approach,
we need to interest producer, midlemen, retailer and final user to swich to
this new charcoal stove (same durability, easy to carry on, max 6 to 8 US$,
saving 25% compare to New Lao stove in the field,..).
But for wich type of charcoal,illegal and very bad one (high volatile
content), of more for real charcoal as we produce in our Yoshimura kilns???
Why not to develop specific stove with green charcoal, that can be an
interesting marketing approach, at least for urban people we will go on
using charcoal either price is increasing.

But in same time for sure we have to develop new generation of biomass stove
to win the war....

ok, any drawing welcome, open to make test and validate your concept if
interest...

to be continued..



------------------------------------------------------------------------
Jean-François Rozis
Tél: 0467643816
----- Original Message ----- 
From: "Tom Miles" <tmiles at trmiles.com>
To: "'Paul S. Anderson'" <psanders at ilstu.edu>; "'AJH'"
<list at sylva.icuklive.co.uk>
Cc: "'Jean-François Rozis - Cambodia - France'" <rozisjf at club-internet.fr>;
"'Stoves'" <stoves at listserv.repp.org>
Sent: Saturday, June 03, 2006 5:08 PM
Subject: RE: [Stoves] RE: Henson Center Fiure Burner System; Was:
Re:improving charcoal stoves


> The topic is still charcoal burning. The New Lao, Gyapa and KCJ are
> examples.
>
> Note that I noticed a "deeper combustion chamber" in the New Lao not a
> deeper fuel bed as Andrew and Paul imply. We're trying to burn charcoal
here
> not make gas.
>
> CFSP can tell us how the stoves are used in practice and what they have
> measured.
>
> Tom Miles
>
>
>
> >> compare it with the traditional Lao bucket stove on the CFSP site, it
> looks
> >> like combustion was improved by using larger holes, a deeper combustion
> >> chamber, better insulation, and a better fitting gap at the pot rests.
>
>