
In a cross draft gasifier the air enters from one side of gasifier
reactor and gas is taken out from other side.The cross draft
gasifier is one of the simplest gasifier designs. It has a quick
start time and reaches high temperatures which may require air or
water cooled nozzles.
The cross draft gasifier requires low tar fuels like charcoal and
like most gasifiers, fuel size is very important to avoid bridging.
Cross draft gasifiers aren't used all that often because other
gasifier designs offer more flexibility and better performance
across fuel types.