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**Cersdog** · 12-11-2011, 07:49 PM

Still working on the design until I like it enough to build a "permanent" version for long-term use, but I don't imagine creosote will end up being much of a problem... these things burn SUPER efficient, they produce almost ZERO smoke, and the intensity of the flame needs to be seen to be believed!

I see two categories of efficiency;
1) Efficiency at extracting maximum BTU's in the combustion chamber(s).
2) Efficiency at extracting heat from the smoke/exaust beyond the combustion chamber.

#1 is responsible for minimizing creosote, #2 traps creosote because of it's efficiency. Creosote builds up in cold pipes, not hot ones. Woodstoves have hotter pipes because they allow more heat to escape unused.

Some Indians had a tunnel system in the ground to carry smoke out of their teepees. I like the idea, but one problem is you would not be able to insure the structure you heat. Also, it seems you smoke up the house when you start the fire. How long do they burn?

12-11-2011, 07:49 PM	#18
Cersdog Join Date Oct 2005 Posts 378 Senior Member	Still working on the design until I like it enough to build a "permanent" version for long-term use, but I don't imagine creosote will end up being much of a problem... these things burn SUPER efficient, they produce almost ZERO smoke, and the intensity of the flame needs to be seen to be believed! I see two categories of efficiency; 1) Efficiency at extracting maximum BTU's in the combustion chamber(s). 2) Efficiency at extracting heat from the smoke/exaust beyond the combustion chamber. #1 is responsible for minimizing creosote, #2 traps creosote because of it's efficiency. Creosote builds up in cold pipes, not hot ones. Woodstoves have hotter pipes because they allow more heat to escape unused. Some Indians had a tunnel system in the ground to carry smoke out of their teepees. I like the idea, but one problem is you would not be able to insure the structure you heat. Also, it seems you smoke up the house when you start the fire. How long do they burn?
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