Hello,
I really like the idea to use the heat from the charcoal making process for something useful, e.g. space or water heating. A good example is Gary Gilmore’s Keystone stove.
A very good combination would be be a combination of the retort shown in post #147 and something like the keystone stove.
Btw, here are more pictures of the continuous charcoal retort: Making charcoal continuously - #7 by freedombiomass
Regards,
Tilman