Coffee Rocket

[domovoi]

Has anyone built a Coffee Rocket, similar to the ones made by Flemming Abrahamsson, in Denkmark (www.fornyetenergi.dk)?
I taught a rocket stove workshop to a great group of enthusiastic pyros at the Regenerative Design Institute in Bolinas last week. The design problem was that the building is a less-than 120 round foot cordwood cottage with a west facing double glass door. the dweller, Ambrose, would like a bench rocket, but even with the cold temps of western marin, I was afraid we were going to build him a cordwood sauna, and that we would cook him out of his house, or force him to open the windows and thus lose heat. what a waste.
His main concern is with being able to cook, so we can cool down quite a bit by losing a lot of it through radiant heat off the barrel, but other issues come into play such as overall size of the unit. Add to the space the bench itself, a bed and a desk and chair, and there is little room to Be warm in, that is, if you are able to remain inside.
Again, his main interest is the tea kettle and a morning pot of oatmeal...i am beginning to think, Coffee Rocket!! Can we really come up with one that doesn't smoke at all?
What are your experiences?

[Donkey]

Hmm..
Probably safer bet to make a small rocket below a removable plate (like a potbelly stove top or such). Pull off the plate for direct flame to pot action, put it back on for simmer or just to let it die down after. Then, to keep the rocket from heating the house in the summer, just pipe the heat directly out instead of through benches, etc. In this case I wouldn't use the barrel at all.. It's really just a convenient way to put heat INTO the airspace of a house, which is what you are trying to avoid.
'Course, this stove would not be a good one for heating the space in the winter.. Perhaps better to build a seperate stove for heating. Perhaps two smallish rockets, one for cooking and one for heating. They could possibly share a flue, especially if he's not using them both at the same time.

[ernie]

or you can use a 120lb grease can with a metalbestose heat riser and increase the gap at the top to 3 or 4 inches. (maybe 5) so the reburn is kept low. with the low temp systems however there is the danger of the exhaust gasses being to cool and causing smoke back. you can remedy this by putting the chimy pipe vertical next to the barrel so it heats and creates a secondary draw.