Dear all, I think Dean have the shortest (no doubt)..........and may be the most "correct" answer..............
Nobody is "forced" to utillize the char as a soil improving remedee, but it can easily be done using TLUD`s for your energy purposes. To Crispin; why is there any need to make charcoal when you can utillize the biomass as it is and not only from wood (trees), but any type of dry biomass? If that does not reduce deforestation, will a ban do? There is no doubt that 2/3 of the energy content in wood are wasted in traditionel kilns makeing charcoal in Africa. To Samson; I dont consider Wikipedia as a "releable" or as a fact finding source, more than I consider WikieLeaks to bring the whole story all the time. I hear what you say and may be its correct, but we are mainly focusing on the energy content in the biomass, apart from biochar, as the most importat issue here. So I realy dont get the big deal out of discuessing biochar. Could you better give us the link to the video presenting biochar as an option to save trees? Thanks. Otto > From: Dean Still [[email protected]] > Sent: 2010-09-15 16:22:19 MEST > To: Discussion of biomass cooking stoves [[email protected]] > Subject: Re: [Stoves] Stoves Digest, Vol 51, Issue 7 > > Hi All, > > Let's remember that a TLUD can burn up all the char by adding more bottom > air. Or if there is less bottom air, char is made for later sale or > sequestering. So the user can decide to go for better fuel efficiency/longer > cooking time with more bottom air or to make char with less bottom air. > Making char is an option not a necessity with a TLUD. > > Best, > > Dean
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