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Dear Lanny,
I have thought that this solution might be a great candidate
for a "World Stove". It is simple, inexpensive, has really good heat
transfer to the pot, and removes smoke from the kitchen. Sam Baldwin and Micuta
used the idea in Africa showing the practicality of shielding the fire and
creating a optimal gap around the pot.
What I like best about this design is that the fire directly
hits the pot helping to cool temperatures of the sheet metal stove body, which
protects the metal. It's cheap enough that a family could have one for every
pot.
I like to add some of the Rocket parts to it: a shelf so that
wood sticks are separated, a internal grate to lift sticks above the earth, and
block as much air as you can going over the sticks and have as fast air as you
can get going into the coals. As Ron says, insulating the outer body helps a
little but not very much since the combustion chamber is so large.
This is such a elegant stove. If you weren't going to go the
insulated combustion chamber route to clean up emissions, I would recommend this
concept as efficient and well engineered. I wish folks were building these
instead of Lorena's...
Best,
Dean
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