Crispin, Andrew Thankyou for your valuable replies. A short message for now- I will come back to some other points later.
>Letting the flame exit into the butane container probably increases the CO level because of flame cooling. It sounds like a 'fix' to correct another design problem. There isn't really a 'design' yet. I'm just experimenting with scrap metal and this is my first proper iteration. Input on flame management welcome! Regarding the flame exit into the butane canister. The wall of the combustor (6mm tick 125mm chimney) is glowing red hot and owing to the swirling intake air, the flame tends to stay away from the exterior walls of the butane bottle and toward the hot combustor, so maybe it doesn't cool too much. I don't really know how to optimise this aspect of the design (flame management). It seems that when the jet is not directed through a gap and bounces off the combustor wall, the flame is more yellow and the swirl isn't as strong. After the flame is drawn back in, it burns inside the combustor for a further 20" or so. >My immediate thought with your stove would be to have two evaporation chambers and heat one up to dull red temperature whilst allowing air through it to burn out the char+tar. You would then need to blow the ash out if the oil is from plants. Andrew, i'll try to sort some pictures out in a couple of days. I used to use (and regularly drill carbon out of) a Rayburn OF22. A simple and not particularly effective device. I didn't know they made a vapourising model. I had a similar dual chamber idea. It would be extremely difficult to engineer, but I wonder if two chambers and a selector mechanism to pass air through one and fuel into the other would be possible. The carbon deposits could be alternately oxidised away. Jon
_______________________________________________ Stoves mailing list [email protected] http://listserv.repp.org/mailman/listinfo/stoves_listserv.repp.org http://stoves.bioenergylists.org http://info.bioenergylists.org
