posted 10 years ago
You are right, there is alot of energy there. One time me and some of the guys tried putting kindling in a small gasifier so see what would happen. The damn thing ran 45 minutes in that test and it shouldn't have. I opened it up and the wood was barely charred off at the bottom, but it was the saps that had been boiled off the wood to power the single cylinder engine.
Creosote in the hopper is just part of the deal. Kinda the same as a fireplace. One trick you could use is to mix in charcoal with your sappy wood chunks so that the extra energy and the reactive surface of the charcoal can break those saps down. Try a load with 30% char and 70% sapwood and see if it smoothes things out.
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