Rocket Stove

Porkbrick

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thought id take these out of the random vid thread. there are quite a few interesting you tube vids on rocket stoves besides mine. some of the full sized built-in units with heated benches/floors are really cool, not to mention pizza ovens and camping stoves.
part 1
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part 2
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and pt 3. buy the way, i like your idea Stephen of softening the plastic to pull it out instead of burning it. ill give that a try.
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Perhaps kiln mortar might work as well for the cement application, sold at ceramic supply places. Tolerates high heat and expansion and contraction without cracking.
 
Bought some material today but still want to research a bit more before I start to cut on it.
 
This one intrigued me

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Heres the plans I think I will use

rocket-stove-design.jpg
 
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  • #14
i wonder if these guys came up with these independently or one saw the other.
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  • #15
Finished it, and it works!:D
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Looks good, nice job. I felt warmer just watching it. In combination with the air control, I wonder if putting an adjustable damper in the exhaust pipe would allow a slower burn and hold in heat? I suspect it would be a good addition.
 
I can picture a little conveyor dumping wood pellets into the chute.
 
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  • #19
Looks good, nice job. I felt warmer just watching it. In combination with the air control, I wonder if putting an adjustable damper in the exhaust pipe would allow a slower burn and hold in heat? I suspect it would be a good addition.

thanks! the problem with using a damper in the chimney is that the design relies on a strong draft to keep the airflow going in the right direction. if you damp the chimney you risk reversing the flow through the system.

I can picture a little conveyor dumping wood pellets into the chute.

i have a plan in my head for another, larger unit that will do just that, but with woodchips. i want to use it to heat a hottub:D.
 
Seems like with the size fuel I'm seeing used in these videos, one would have to feed the darn things just about full time.

Short of the auto-feed ideas, doesn't that render them a poor choice for space heating?
 
A small stove like that might also be good burning some bits of coal, if available and cheap enough. A few pieces shouldn't affect global warming. :D I still think a damper would be good for slowing down the burn and holding in heat, even if you could only close it a little before the thing choked up. It would be easy enough to find out.
 
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  • #24
Seems like with the size fuel I'm seeing used in these videos, one would have to feed the darn things just about full time.

Short of the auto-feed ideas, doesn't that render them a poor choice for space heating?

you are right Burnham, the fuel does require frequent tending, tho you can load quite a bit more than i show in the video. this stove is only meant to heat a 100sq ft cabin, for a larger space a larger unit would be called for and it would be able to handle much larger fuel. also, for heating a home, a "thermal mass" rocket heater is the way to go. they work by running the chimney through an earthen or stone bench, or bed platform or even under the floor. this way a hot fire burned for a few hours heats up a large mass of earth or stone which in turn re-radiates that heat back to the room over quite a long time. same idea as the masonry heaters of Scandinavian design. this video shows a bunch of mass heaters in different configurations, same general principle applies to all of them as far as how they operate. p.s. warning, lots of hippie houses!
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I got started on my rocket stove this evening. Decided to use a piece of double wall stove pipe for insulation.
 

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