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i saw an article about these and found them intriguing, am thinking about getting one. apparently they came about after a man who studies wood pyrolysis and wood-gas applications visited africa, where they were using so much wood for smoky cooking fires that there were severe problems with desertification and poor air quality. here is a bit about how they work.
Quote:
Dual Stage Combustion
The WoodGas stove effectively burns the fuel twice.
In the first stage, combustion air is driven into the fuel to create some smoke (or wood-gas). This occurs in the gasification zone of the above diagram.
In the second stage, more combustion air is driven into the chamber to burn the gas from the first stage. This occurs in the combustion zone of the above diagram.
The electric fan provides the combustion air in just the right amounts to produce the gas and burn it completely.
Benefits:
•High Efficiency - very little wood produces lots of heat.
•Low Smoke -
•Campfire Smell almost completely eliminated.
•Hot flame - cooks food quickly.
there are other manufacturers besides this one, and a number of youtube videos for this and competing models.
has anyone had any experience with these, for camping or backyard use?
I have not used the rocket stove but am familiar with the principle. Many EPA certified Wood fireplaces that do not use a catilytic (sp) converter use the same principal of reburning and it works well. We have one, and it is amazing to see the gasses being burned at the roof of the firebox, with a nice blue flame. If I had the need I would not hesitate.
I have not used the rocket stove but am familiar with the principle. Many EPA certified Wood fireplaces that do not use a catilytic (sp) converter use the same principal of reburning and it works well. We have one, and it is amazing to see the gasses being burned at the roof of the firebox, with a nice blue flame. If I had the need I would not hesitate.
hmm, i didn't realize that the non-cat stoves worked on that same principle. in my area the old smoke dragons are still permitted but eventually that is probably going to change.
oh how i would love to have a wood gun or a garn - that's what got me started looking for some kind of smaller version. one of these days i am determined to have one, but in the meantime i would love to check out a working model...
how much are they asking for a wood gun these days, do you know?
how much are they asking for a wood gun these days, do you know?
Wouldn't know, their coal boilers are about 7 to 9K depending on whether it has ASME stamp. I'd imagine the wood units are going to be in a similar price range. You'd have to check your local code to see if you need stamp in non commercial residential dwelling, it varies by state. There is no difference between the units other than the stamp and the $2K.
Wouldn't know, their coal boilers are about 7 to 9K depending on whether it has ASME stamp. I'd imagine the wood units are going to be in a similar price range. You'd have to check your local code to see if you need stamp in non commercial residential dwelling, it varies by state. There is no difference between the units other than the stamp and the $2K.
that price is about what i figured. as small as my current house is, it probably doesn't make much sense to have one just yet, regardless of how much i'd like to have one
The old two barrel wood stoves worked on this principal. Wood cooked in the lower firebox and the off gas burned in the top barrel. You could buy kits with the holders, doors, grates and controls and add your own steel barrels. That saved shipping costs.
The old two barrel wood stoves worked on this principal. Wood cooked in the lower firebox and the off gas burned in the top barrel. You could buy kits with the holders, doors, grates and controls and add your own steel barrels. That saved shipping costs.
are you sure that's what actually happens?
i think it's simply to give more opportunity for heat to radiate off the smoke/exhaust gases before it exits. kind of like a masonry fireplace.
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