Specific engineered in wood-for-power can often appear as overengineered to someone not living in the designers area. Using the predominate wood fuel input that systems designer is forced to play with.
Cases in point.
VesaM’s very, very stout built rotating wing crusher/sweeper grate. He evolved to this system for his regionally available commercial peat sod fuels.
As he states the prepared fuel bits can have small stone in them. And this peat sod has a much higher silica ash % versus his primary birch wood fuels.
The peat sod ash melts forming clinkers.
His grating crushing system is to crush the small stones and clinkers up to pass through the grate and not flows clog.
He states clearly that when using actual wood chunks he often does not have to grate activate.
The learned published European WWII experiences all say, “Do not use oak wood!” Why? Accelerated upper systems corrosions.
Now some such as WayneK, CarlZ and others live where oak is often 50% or more of the woods that they do have. No choice. They must use oak.
Their solution? Make the system sectional so the corrosions most effected areas can be easy changed out.
Much more complex than an all weld up quick-build system. ( That then becomes a constant corrosion leak slaving monster!)
And the modern, not-at-war, Europeans solution is to just now use all stainless steel in their build ups.
Danny Cox did that here USofA. Build all SS. And I stand accused of forcing this change onto my friend BenP. Insisting on this to the Gekkers, too. (Ha! Getting myself behind back called SS nazi SteveU.)
And then there is the wet-wood designers.
WayneK, BenP and a few others. Multiple upper system condensate gutters. Outside diverting, cooling and collecting.
internal heat cooking down tars/volatiles refining areas. Close coupling recirculating of the of the hot vaporized off HC&O’s back into the oxidization zones. Force more steam H2O’s and CO2’s to be formed to fuel the next step, reduction zone.
Intentional heated flow dripping down of the secondary and tertiary tars right onto the nozzle faces. More HC&O’s.
And these systems CAN use 20% plus moisture wood fuels.
My temperate rain forest situation.
I have now evolved developed to be able to effectively woodstove with 40% moisture wood fuels.
My engine gasifer interest is in system able to do the same.
Gonna’ be “overengineered”. Gonna’ need that IC engines wastes heats (wood fuels derived!) routed back into the gasifers system to jump this thermal hurdle.
Careful throwing stones, eh.
Not every one can live in a solar rich area.
With charcoaling hardwoods.
Follow and learn from those doing the difficult.
Because the circumstances of severe weather; forced lifestyle changes; can put anyone of you there.
With NO peeerfect dry chunked wood.
With NO pre-prepared wood charcoal.