I heat my house and cook on an extremely efficient woodstove. It's operation is totally passive, no fans, no batteries, no gizmos. The key to it's efficiency is limiting the primary air to just enough to gassify the wood fuel then letting the draft pull in secondary combustion air which is distributed by a hollow, perforated baffle plate directly above the fire. Where this superheated air is introduced, the wood gas burns much like the jets on a gas stove. It's rated efficiency is 69% under Oregon DEQ test conditions and it's emissions do not exceed 3.4 gm/hr. www.pacificenergy.net Simple, clean burning, and efficient are the principles which will succeed in a third world country like where I live. m-- > > I don't think anybody has been talking about heating stoves in this > thread except in passing. The original message commented on Robert's > discussion of his commercial-product IDD woodstove (for cooking), a > la Tom Reed. Very nice too but it uses a battery to provide power for > a primary air-supply fan, so its application for 3rd World use is > useful but limited. Without the powered fan these stoves are > promising but not yet fully practical, and nobody has yet solved this > problem, AFAIK.
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