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Table Top Rocket Mass Heater?

 
                                            
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I am big on Tiny house living and am HOPEFULLY moving into my very own tiny house in the near future. I LOVE the concept of the Rocket Mass Heater but I am limited in space [110 square feet total in the house.] I was wondering if I could use 3 inch pipe and a metal 5 gallon bucket to build a rocket mass heater that would be movable by two people and fit on a tabletop. Am I talking crazy or would this be possible? It would only need to heat 100-324 square feet but I am more concerned not wasting any heat [I don't want to be venting out much heat into the world, Texas gets hot enough as is] what would be the minimum size I could be looking at for something like this?
 
Posts: 149
Location: sw pa zone 5
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Most small Rocket stoves that are built in a 5 gal bucket are used for cooking, like the one this video demonstrates.

http://www.youtube.com/watch?v=PeKcb-Fw-bo&feature=related

I build one of these and it works well. I suppose that you could try and modify this design, instead of ashes inside to hold the heat in use cobb to retain the heat and radiate it into the room. Making a cobb piller straight up with the exaust pipe in it would also help. But this straight design does not give you the advantage of the down draft system used in the large units. Since it is an open fire, and I would not want to burn up in the small house I would not put it on a table. It should be mounted solidly on the floor. I think you can play with different designs and see what works for you, you are not heating a large area. Paul has a thread on here about his experiments with a " small " portable rocket mass stove. You can read his experiance and learn from his mistakes. No need to reinvent the wheel. The unit he made was much bigger than what you are talking about, but you can still learn alot there. The main thing with a Rocket Mass Heater is the MASS. That is what holds the intence heat created by the rocket fire in the stove. With out much mass I don't see how you will heat even a small cabin unless you fire alot. Good luck with your project.
 
Mike Dayton
Posts: 149
Location: sw pa zone 5
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Here is another video using a coffee can instead of a 5 gal bucket.

http://www.youtube.com/watch?v=_-BQMpaW-E0&feature=related

Maybe if you used this design and put a 5 gal metal bucket over the riseryou could not only get the down draft but also something to encase in cobb including the exhaust pipe. Good Luck
 
gardener
Posts: 791
Location: Tonasket washington
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you could build a pocket rocket and put mass around it. its a bit dirty but not as bad as a box stove. an RMH that could be moved around like you want to i dont think is possible.
I do think that if you have a couch or something you can build the couch in as a rocket stove bench. or a bed in the sleeping area. this is the way we usually fit a RMH into a small space.
your house is just a little smaller than ours and you have fewer heating days.







 
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