Rocket Stove Mass heaters

[Machias]

Anyone here build a Rocket Stove Mass Heater or a Rocket Stove Heater?  Not to be confused with an outdoor Rocket Stove.  Looks like a fantastic way to heat a house or cabin.  Anyone aware of any counties, WA or ID authorizing it as far as the code goes?  I know a family in Oregon got it approved for their county.  Looks like a fantastic way to heat a shop or home.  1/10th the amount of wood as a conventional wood stove, heat your house for a day or two on one firing.  No pollution, very little if any risk for a chimmeny fire.  Seems like the only draw back is the weight if you have a wood floor and the asthetics of the barrel, although I have seen some that are pretty decent looking.  Just curious if anyone has done one.

[Machias]

Here's a few examples

[Bofire]

How do you clean them out?
Carl

[Machias]

They have a couple of clean out ports, but most have extremely small amount of material to cleanout.

[highside74]

Noise?

[Machias]

None

[Special T]

Does it need to meet code if it is just for the guest house?

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[quadrafire]

Why the metal barrel? Would look better without it for sure. Is it needed for some reason?

[Machias]

Yes, it's an essential part.  Most have a J shaped burn chamber.  You put sticks in standing straight up.  The fire only burns the bottom part of the wood.  The fire burns sides says due to a draft created by the heat core. The fire and smoke rises up the heat chamber, which is inside of the barrel. The smoke and creosote burn inside the barrel.  In a conventional stove a lot of the heat is lost up the chimney.   In the rocket stove mass heater almost all of the heat is stored in the mass.  Slowly released over several hours and even a couple of days.  It gets its name from the sound of the fire burning sideways.  You have to bend down to hear the rockety sound.  There is some great videos on YouTube that show how they work and how to build them.  Very cheap to build.

[Boss .300 winmag]

Where does the smoke go?

[Special T]

Where does the smoke go?

Not much smoke the barrel is a burn chamber and the "chimney" runs through the bench which absorbs most of the heat as it travels  out. They are a really cool setup.

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[Special T]

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[Machias]

Almost no smoke, only steam and CO2. 

[Machias]

Thanks for the video Special T

[Cylvertip]

I have been looking at these too.  There was an outfit out of Rainie r that was making certified burn/heat chambers.  Would need certified for
insurance purposes in a house.  Or don't ask, don't tell....   They use very little fuel and can effectively heat using relatively small diameter material.

 Saw a video from winter in The Okanogan where they heated the house for a long time by just burning a medium sized arm load of wood the night before.  The outside temps were well below freezing and the house was still above 70 the next morning without a fire through the night.