What happens if a bunch of sticks are bundled together, lit at the tips, and inserted into a well-insulated horizontal enclosure that enters a Rocket stove providing draft?
Well, it’s hard to get everything to work well. As Dr. Winiarsky pointed out “Gasifiers are finicky.”
But, when all of the tips of the bundle of sticks are lit at the same time, and there is the right amount of primary and secondary air, then the fire moves horizontally in the well insulated enclosure away from the Rocket stove and emissions can be decreased.
Working with the Gates funded Global Health Labs in 2017, ARC experimented with various horizontal gasifier prototypes and sometimes the results (Tier 4 for PM2.5) were encouraging.
ARC decided to explore the development of primary air jets up into the fire as a more promising technique and left the horizontal gasifiers on the shelf. But who knows, someone may find the concept interesting and continue the investigation of the horizontal gasifier and make it less finicky?