Dear Mark,
Hand cranked unit is for smaller gasifiers ( updraft design, fired from
top just to make rice husk bio-char, instead of farmers burning them in
out the field) gas gets out very fast, less than 2 minutes. Than they
keep cranking until the rice husk gas finished. We kept the ash
collection area closed, they do 2-3 burnings before they clean out the
ash box. They put water on hot charcoal- bio-char and remove. This unit
is very inexpensive and built to use on field.
For your systems, you already have a battery on the pallet, I think
someone mentioned a heat blower before, it should work fine as long as
we blow in to the gasifier. Suction at start is always hard ( For us).
Ones the gas is clean, the engine do the rest. Ones the engine take over
the suction, there is no problem. One think to consider, for surges of
power, we put extra filters, the gas in the filter housings is enough to
cover the 5-10 seconds surges.
My 3" blower is 370 W (8.5 m3/min) , 2" is less than 100W. They both are
sufficient enough to blow start the gasification until the gas is clean
than engine takes over. Small blowers we buy cheap enough, the larger
ones we built, up to 28.3 m3/min (400 KW Cat engine combustion air inlet
flow). If any one needs this info, I can send detailed pictures since
these big blowers- suction units cost serious money.
Regards,
Robert,
Biomass Indonesia
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