
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.