No, oldgravely, this system did not have any secondary air inlet near the top. It all came in through the triangular air holes at the bottom of the outer barrel. It's a true retort....the majority of the wood is inside an inner chamber. The fire never enters that inner chamber. It just heats the inner chamber from the outside. When pyrolysis begins in the inner chamber the smoke exits the bottom and, under the right conditions, mixes with the inlet air there and adds to the outer combustion.
No, just a few small coals from the burning wood. Yes, we're trying to develop a burner that works well for those gasses.....they don't burn as well as methane or propane, for example.
No, oldgravely, this system did not have any secondary air inlet near the top. It all came in through the triangular air holes at the bottom of the outer barrel. It's a true retort....the majority of the wood is inside an inner chamber. The fire never enters that inner chamber. It just heats the inner chamber from the outside. When pyrolysis begins in the inner chamber the smoke exits the bottom and, under the right conditions, mixes with the inlet air there and adds to the outer combustion.
little1406 4 months ago
did you have secodnary air holes neer the top or in the flue? thanks Jim Nielsen
oldgravely 4 months ago
No, just a few small coals from the burning wood. Yes, we're trying to develop a burner that works well for those gasses.....they don't burn as well as methane or propane, for example.
little1406 1 year ago
is that slag dripping off the bottom?
Also, you can use a bent iron pipe to bring the gasses underneath and further the reaction
MrThahey 1 year ago