Final Design

Charcoal Test Run, with Propane as fuel

Rocket Stove Performance

Overall charcoal volume input to output efficiency is roughly around 50%.  This is a rough estimate based upon the reactor filled to full capacity of "wet" (meaning the wood has not been drying in sun or oven to remove moisture) eucalyptus wood in comparison to how full the reactor is once carbonization has been completed.  This is much higher than the typical 42% yield observed at 400C with a volatile content of 30% for a "bone dry run" (meaning the feedstock has been fully dried and experienced about a 21% reduction in volume due to water content loss)1.  Volatile content of charcoal produced has repetitively been in the desirable range of 20-30% content2.  The volatile content is the main quality assurance for charcoal as this value characterizes how much heating value the char retains after pyrolysis, the energy per unit of charcoal.

Product life is considerably long as after a multitude of tests, minimum of 20 rest runs, the reactor still showed signs of longevity and no major infrastructural damage.  

Footnote:

1. http://www.fao.org/docrep/X5555E/x5555e03.htm#2.2%20efficiency%20in%20carbonisation

    Section 2.3 Measuring the Yield, 30% volatile, 42% yield at 30% volatile for bone dry run

2.http://www.fao.org/docrep/X5328e/x5328e0b.htm

    Section 10.1.5 Typical Charcoal Analyses

    Eucalyptus Volatile Content from Table is 25.8%