Thanks Dick for the explanation.
As before, I note that because there is such a large open space inside the back of the stove. I say 'open' because when the fire is small, it is as good as a partially heated open space. It is, from your description, going to be a very clean burning stove once it is hot and running at high power. The heat and flames will be filling in the space at the back. When the fire is smaller, smoke and CO can get around the flames at the edges. That is what I was referring to when I say it needs a combustion chamber. Two stove list members, Paul Anderson and John Davies, are using a conical region immediately away from, above, next to, the fire+fuel to give the flames a chance to meet the smoke and burn it. The modified traditional Mongolian stove has instead a pipe which accomplishes the same thing. It would be interesting to know what happens of some sort of conical burning chamber were inserted immediately after the fingers that separate the fuel from the flames. I am surprised your primary air supply tubes can get clogged. With what? Regards Crispin From: [email protected] [mailto:[email protected]] On Behalf Of Dick Gallien Sent: 27 December 2010 12:15 To: Discussion of biomass cooking stoves Subject: Re: [Stoves] 4 pictures for you Hi Crispin, It would be a cross draft, with the preheated primary air coming down through the 4, approximately 1" pipes, that enter a few inches from the base. The pipes have a right angle and I mentioned to Bruce Wolfe, who was just starting USA Sedore, that the 4 pipes would be easier to clean, if the right angle was eliminated. He agreed and said it would also be cheaper, so may have changed that. My 4 pipes must be partly or completely plugged, in that it is always run wide open and we usually have a nail or large bolt holding the feed door partly open, making it a down draft. It has an 18' straight stack, with insulated stainless on the outside, so draws well. There is no grate, just a few fingers protruding half way down, into the approx. 3+" gap across the width of the floor of the firebox. It couldn't be much simpler or efficient, yet all my long gone farmer neighbors, heated with the most in efficient wood stoves and furnaces, often with large, uninsulated homes. Dick Dick Gallien 22501 East Burns Valley Road Winona MN 55987 [email protected] [507]454-3126 www.thefarm.winona-mn.us On Mon, Dec 27, 2010 at 9:23 AM, Crispin Pemberton-Pigott <[email protected]> wrote: Dear Dick That is a really big throat! Wow. That was one huge chunk of wood it swallowed! As far as I can tell from you description it is a downdraft stove. Is that correct? Is there a grate with the flame coming through the bottom, or an opening at the back with the flame going sideways out the back? In that case it is a Crossdraft stove with the primary air coming in from the front and passing through the fuel to the back. Perhaps you can comment. Much appreciated the video. Crispin >>>> This is the 4th or 5th winter I've had this Sedore. The creosote is from the green chips and having the stack sections in backwards. I've never had to clean the chimney. Any stack creosote falls directly into the inferno. Have heated only with wood, for over 50 years. Dick http://www.youtube.com/watch?v=rb83h6kts7o _______________________________________________ Stoves mailing list to Send a Message to the list, use the email address Stoves mailing list to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists .org for more Biomass Cooking Stoves, News and Information see our web site: http://www.bioenergylists.org/ [email protected] http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists .org
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