[Gasification] Pellet Fluffing and axial/rotary screw

[drew]

I have used pellets in my tlud variant and found the swelling action to 
be extremely challengingly.   So much so that I gave up on pellets 
unless mixed with other fuel.   They seem to swell in reaction to heat, 
but perhaps more to the resultant steam?   My system was a pressurized 
low volume flow and it resulted some times in a hopper so packed that a 
chisel was necessary to clear it.   The pellets I used were Fir sawdust 
with low moisture content (< 10%).  

I was not aware of the dual motion in the injection molding machines 
makes great sense to me.  Perhaps John F.   JBF biofuels uses them in 
his system, if not they might be worth while?

All the best
Drew

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