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Post by Donkey on Feb 5, 2015 11:36:55 GMT -8
How about the manifold? I always look there first when these stoves have issues. The transition space, under the barrel, where gasses have to turn into the bench, that space should be much larger that you might think.
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nemo
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Post by nemo on Feb 5, 2015 14:30:39 GMT -8
Thank you, Donkey, I have read the thread from this forum about the manifold before I have built the stove so I made it LARGE .
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nemo
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Post by nemo on Feb 19, 2015 11:42:22 GMT -8
Hello everyone! The stove finally got hot, guess the big wet thermall mass and some faulty cleanouts(they let air in) were the main causes the stove did not work well. It is thanx to you guys I could build this stove soo..thank you for sharing your time and knowledge! Now I got back to the first stove I started with in the first pages of this thread and gotta say I got a bit stuck on how to build the entrances and exits from thermal mass. So I can fit 3 halves of barrel beside that wall. And I do not know how to build the exit flue from the barrels. The shortest and easiest way would be to plunge the flue directly from the top of the barrel close to the ground, BUT in order to put my flue directly in top of the roof, both the entrance of the hot air from the first bell and the exit would be on the same end of the mass just on different heights. In this case , do I have a problem? Will it affect the draft or the heat that should build up in the mass? In the second scenario, the flue exits on the other end but involves elbows and Ts and more of that dragy tubing. I made some simple drawings of the scenarios. I appreciate all your help!
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Post by DCish on Feb 20, 2015 12:54:50 GMT -8
I've done entrance and exit at same end, no problem. I have a 90° angle elbow on the entrance tube to get the gases pointed toward the other end. The far end is a few degrees cooler. Bench length is 142cm internally (rather short) and fed (for now) by an inefficient standard box stove.
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Post by shilo on Feb 21, 2015 10:33:55 GMT -8
I've done entrance and exit at same end, no problem. I have a 90° angle elbow and 1 meter tube on the entrance tube to get the gases pointed toward the other end
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nemo
New Member
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Post by nemo on Feb 23, 2015 15:32:02 GMT -8
Thank you for the answers! I strated playing with a batch box on this stove. I could not resist the ideea of longer burn time. I ended up with a succes as I loaded my box once and found burning coal even after 12 hours. Hot barrel,hot flue, warm room,roaring fire. Definetely better than the clasic feed. The thing is, the exist gasses are not as clean anymore , it is mores smokey. Might be because of the big chunks of wood maybe. They burn harder than split thin wood? I implemented the batch box on another stove we have here. Works good.
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Post by satamax on Feb 23, 2015 21:23:38 GMT -8
Nemo, get a testo to sniff it, because, even with a huge charge of wood, i'm dubious embers would last up to 12 hours.
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nemo
New Member
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Post by nemo on Feb 26, 2015 8:30:15 GMT -8
Unfortunately , I don't have a testo:(. I recently put an ash pit under the fire and it shortened the burn period with few hours. I'd say now it lasts about 7-8 hours with full load and all air intakes covered. Ash preserved longer the burning coal.
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nemo
New Member
Posts: 48
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Post by nemo on Mar 5, 2015 13:57:19 GMT -8
The wood lights up fast and turns fast into coal, but the coal does not consume into flames as it used to. Now it burns without flame for longer periods and I got a lot of ash after the fire dies.As soon as I drop a new piece of wood on that coal it rapidly catches flame and the draft is visibly and loudly pulling. Is this a sign I don't have enough draft and pyrolysis or gaseification are miles away? Despite the fact that the draft looks a bit weak, there is much more fire, more flames entering the barrel though at a slower pace. It clearely increased its efficency....I'D dare to say double the heat and quadruple the burn time.
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Post by Dan (Upstate NY, USA) on Mar 7, 2015 23:16:32 GMT -8
I think you need to split the wood up smaller, no bigger than the size of your wrist...
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