Dear David, (and all) how come that "lessons learned" never reach their audience!!.................?
The key issue is, and not only for the developing world, but for the whole planet: "To days waste - to morrows fuel" Instead of makeing charcoal, whereby 3/4 of the energy is "used" (wasted) in the charcoal makeing process, the biomass is processed into solar dried chips or pellets to be used in the TLUD ND stoves. These types of stoves operates like a sort of a micro-kiln, transferring the energy in the biomass from the forest to the kitchen by utillzing about 95 % of the combustible gases in the fuel for cooking and even makeing it possible to use the 25% of produced charcoal for simmering............can it be more efficient...........?? Charcoal or biochar, if you like, will be sort of a bonus during this process............. There is no need to cut down the whole tree, just collect branches and other forest- and agri-waste. When you utillize 80% more of the energy content in the biomass, you will also reduce the demand for biomass dramatically and the same end product can be utillized as biochar on top......... is that so hard to understand? Why all this talking about factories when the stoves can be produced easily by local crafts men? The need of biopmass will allways be there, so it is a matter of transfering the production line towards woodchips and pellets........just like transfering the use from fossil fuel towards electrified or hydrogen cars.........just as "easy" as that.......... It has to be done, sooner the better. Thanks for your attention. Otto > From: Nat of WorldStove [[email protected]] > Sent: 2010-09-14 16:32:29 MEST > To: [email protected], [email protected] > Subject: [Stoves] don't burn the charcoal bury it > > > > Dear Rogerio, Kim, Crispin, Paul and all, > > It is true that the lure of quick cash is very strong, however I would like > to encourage a longer vision. > > The real powers of biochar producing stoves are: > > 1) lower emissions > 2) eliminate the need to cut down trees for fuel > 3) can use fuel too small to be used by wood burning stoves > 4) produce biochar > 5) sequester CO2 > > We are no where near 350 ppm CO2, and sadly the areas that are suffering most > due to climate issues are (in many cases) the same areas that currently > depend on three rock stoves. > > While I agree that carbon credits seem to have little value vs charcoal > sales, they do allow for small villages to set up their own stove factories > creating permanent new jobs without asking for outside aid, and the char > produced by the stoves when placed in the soil, can increase crop yields to > the point that the earnings from the crop yields far exceeds the earning > potential of the charcoal sales. All this while increasing food > independence, improving nutrition, restoring desertified lands, and > sequestering CO2. > > If people were to sell the charcoal, non of this would be possible. > Just my two cents, > > All the best > > Nat of WorldStove > > Message: 3 > Date: Mon, 13 Sep 2010 12:17:17 -0400 > From: Jean Kim Chaix <[email protected]> > To: [email protected] > Subject: Re: [Stoves] Summary of cost of charcoal? > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="windows-1252" > > Dear Stovers, > Apologies for the delayed response to this thread. Yes, we began collecting > charcoal and other biomass prices from spot locations around the globe with > a view at making it available to stakeholders. We are in the process of > making the prices uniform as Rogerio suggested in his comment below. > > We will make another push shortly online for more submissions. The more data > we collect, the more accurate the picture. > > Also, you should know the info presently visible online does not reflect all > the information we possess. We're still fine tuning the categories worth > sharing. The second issue is approximating a uniform measure. For example, > when folks submit prices for the equivalent of "a coffee can full of > charcoal" sold on the side of the road in Port-au-Prince, it then becomes > tricky to get a real measure of price/volume of charcoal. > > Since the most useful measure is probably, as Rogerio suggests, a metric > ton, it is best that submission be made using some type of standardized > measure, like a 100-lb burlap bag you would use for potatoes. From > photographs, it seems this type of bag is the preferred measure in > sS-Africa. > > Finally, a reminder that we are always open to ideas about how to improve > this tool! > > Rgds, > > Kim > > > Subject: Re: [Stoves] Summary of cost of charcoal? > Message-ID: > <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes"; > format="flowed" > > Rogerio and all, > > 30 to 40 cents US per Kg for charcoal is real money!!! Even at half > those prices (allowing for char fines and processing, etc), it is > still much money. > > I estimate that a TLUD stove making charcoal could yield 250 to 350 kg > of actual carbon (or char with impurities). It is only logical that > the poor folks would opt to burn it. > > The carbon credit folks, especially those wanting to sequester char > from stoves, have a loooooong way to go to complete. > > Rogerio, I am in Brazil for the Rio conference. Will you be there? > Or where are you in Brazil? After Rio and Amazon excursion, I am back > in Sao Paulo from 19 to 23 Sept at contact number for Cassio: SP > 4243 9699. Or we talk via email. What are you up to these days??? > > Paul
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