Yes GaryT., think that I did stutter and it is actually madrone tree.
GregC, it has been said (correctly) that all woodgasifiers are heats Deficient.
And that all charcoal gasifiers are heats Excessive . . . meaning having surplus internal self-made heat.
So a woodfueled gasifier can always befit by adding heat energy into it;s system. Or strictly conserving what it does self-make. Why this Ben’sBook system has the layers of insulation and hot produced gasses recycling pathways. Even moderate system heat to incoming air pre-heating - heat scavenging.
WayneK’s woodgasifiers as he builds them; uses much, much system heat to air-in boosting. And he even pre-heats that air on his truck with an engine exhausts to gasifier air-in pre-heater.
Some of the charcoal gasifier fellows mostly just let metals levels of damaging char-glow heat out through chamber skins and external filter cans and piping.
The better charcoal guys use this heat energy for realistic amounts of final gas hydrogen boosting with as I said metere- in steam, and/or; moisture&CO2 laden engine exhaust. Pulled hard they have this excessive heat energy to work with.
I do not know at what gas volume pulling range a Ben’sBook system would overheat operating on just pure woodcharcoal.
If you wood stove for heat, next time overload fuel it, and let it burn down from open flame burning to just a super hot glowing red char mass. Feel this radiated out energy. Smell the overheated metals molecules shedding. (our cream porcelain stove will acrid stink doing this)
That is what will happen with hard driven only char fueling.
Oh. Cool down your wood stove glowing char mass by simply putting a log of wettish wood on it.
This is what in a wood chunked gasifier is happening.
tree-farmer Steve unruh