Andrew Parker wrote:Review this project for some ideas on how to burn coal cleanly. I mentioned it in an earlier thread on coal, "First RMH in Mongolia".
You may also want to look into using a p-channel (described at Donkey's Stove Forum).
Denny Nebgen wrote:Thank you , Mike and thanks for the pics. That helps give me an idea of what to expect . I suppose a double layer of plastic might also help.
Dale Schlehuber wrote:We are attempting our first rocket stove (and mass heater) this weekend and have tried many variations but still have trouble with smoke (and flame) coming from the feed. Initial paper start fire is really rocket sounding, but as the sticks are added, the sound isn't there, and eventually flames and smoke start coming up the feed side.
Here is what we have:
6" x 33" double insulated pipe that has been filled with vermiculite and clay
firebricks, clay, sand, regular bricks found in alley.
pre-burned 20 gallon barrel
Questions: 1) is there an ideal burn chamber length? too short, long, or tall? (ratio to the size of the pipe?)
2) is there a limit as to how high the feed chamber can be?
3) is there an ideal ratio of the size of the feed chamber to the upright pipe (6")
Denny Nebgen wrote:I am seeing in some threads on the Rocket Mass heaters that there is some suggestion that they need fed quite often to keep them burning in order to get the mass to temperature that will maintain heat inside the greenhouse say throughout the night. This could be a real drawback for this idea of mine. I can see where if you are inside a home tending a fire throughout the day would not be a problem but, inside a green house you may not want to be inside there all day to tend the fire continuously. Any thoughts on this? Thanks.