Dear Michael
Never assume anything, nor let others assume it for you, especially about things that are complicated. Dr Goreau is quite correct that it is unlikely that the stove would be durable but there are many things to consider. First it may not be necessary to last a long time. It may make a very good way to produce something that is otherwise only producible from imported components. It can be done by a very unskilled person. It requires very little work. It may be possible to mix refractory cement into the process (basically a clay and cement mix) in some way. Perhaps as a liner put in afterwards, getting an excellent bond on the 'biorock' (who invented that name?). It may reduce the cost and increase the stability of a stove product by reducing the need for metal to the combustion chamber only. It may be possible to have a sacrificial element and a more expensive fixed element. The resulting ash/decomposition may be high value cement. Cement is difficult to import and does not last long. The wood ash and burned calcium might make a good cement substitute if the char is screened out. Lots of possibilities. Regards Crispin From: Stoves [mailto:[email protected]] On Behalf Of mtrevor Sent: Friday, May 31, 2013 3:46 PM To: Discussion of biomass cooking stoves Subject: Re: [Stoves] stoves by the millions Dear Chrispin Thank you for the edifying comparison and explanation on refractory issues. Dr Goreau advise he believes biorock would not work in an internal stove application, unless we want to make quick lime or use with betel nut. However a mesh or wire frame for the external housing might work.
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