Jon, Wood Gassers burn very diferent than conventional wood boilers. (1) they are totally sealed without combustion air). All air is pumped in via controlled fan. (2) all combustion air is pumped into the wood holding chamber from the top and forced DOWN through small orifices, into a secondary burn chamber. These orifices similate a blowtourch which burns off the "smoke at 1200-2000F. {much the same as blowing on coals to start a fire.} This secondary gasification chamber literally burns all the heat energy that would normally be released back into the air as smoke in a conventional boiler. Smoke can amount to 50% of the heat , BTUs/LB in a peice of wood, that a conventional wood burner never converts to heat. Gassers don't recover all the BTUs , but emissions are very low, no visible smoke, and while in the "idle mode" (temp above low limit) there is no oxogen present- thus no smoldering wood/no smoke, as air flow is down in the unit and any lingering smoke is trapped in the wood chamber above the gasser chamber and flues. when core temp drops below set paramiters, generally a Delta T of 10F from a set point of 180F high side, the combustion fan will turn on or off. It is also very important to maintain a core temp of +140F, because below that condensation can occure and deterioration of the water jacket occures. Electronic sensors controlling circ. pumps or a compound manifold with mixer valve can control the low jacket temp problem. Low jacket temp also will affect when gassifacation ocures, depending on the quality of the wood. Jon, I might have confused you a bit, but think of this system like the injection/combustion systen in a 930 Case, Inject fuel into Precombustion chamber, blow it out into the cylinder and off you go. Loren The acg
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Today's Featured Article - Gettin My Old Tractor Home - by Clayton Sweeney. My name is Clayton Sweeney. I am from Southern Maryland in a small town called Lothian. I am 20 and my father and I are the proud owner of a 1954 Allis Chalmers WD-45. When I was 18, I dated a girl in the next county over. Her family are tobacco farmers. It was a cold Thanksgiving evening, and we were going up to her Grandparents house. As we passed one of their barns, I noticed something orange in the corner of my eye in this old shed. It was pretty dark and I asked what it was
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