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The following woodgas stoves burn dry (15-30% moisture) wood chips at tempertures of 1500-2200F. This means no smoke and negligible odor when at operating temperature. The chips are lit with paper and kindling or an accelerant such as diesel, charcoal lighter fluid or alcohol at the top of the stove, just below the secondary jets. Initially, the gases are burned off the wood as the flame burns downward, which accounts for approximately 85% of the heat value. Then, charcoal is left and burned with a characteristic blue flame (CO/H2). The stoves are fed air from the bottom into a Primary Jet. The air feeds the pyrolysis combustion and releases various gases. The gases rise and are mixed with secondary air (upper jets) and burned at the high temperatures mentioned. |