We studied this when I was in grade school in the 70's. We did an experiment where we put a popsicle stick in a test tube, corked it with a cork with a glass tube it it. When we heated the tube the gas would come out the tube and we got a flame like a bic lighter. Was very interesting. I don't see how they gain the efficiency tho, you need to heat the wood then pull the gas for other uses. I suppose you could use the wood to heat a boiler for house heat, then have a separate compartment to heat wood to get gas for other uses as well, like a propane type water heater or cook stove. When all the gas is out of the wood all you have left is ash just like if you burned it. You can actually watch the process by just watching a fire close. You will see that the flame never touches the wood, it just heats it causing the gas to escape and then the gas burns.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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