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Post by shilo on May 13, 2015 12:09:27 GMT -8
I just finished the first chek and more research is needed but it look very promise. Instead making one tall riser to make 2 litle ones with space between them. It's similar to the walker core but it's geting warmer. Unfortunatly we dont have a testo but i measurted 30 ppm at the end of the chimney
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Post by shilo on May 13, 2015 12:41:14 GMT -8
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Post by shilo on May 13, 2015 17:57:21 GMT -8
First riser - 2.2B Downdraft - 2.2B Second riser- 3.5B Firebox dimentions - like piterberg standart.
Be careful. I burned all my pony hair!
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Post by shilo on May 13, 2015 18:14:09 GMT -8
Ah! One more intersting thing- the ceramic glass above the first riser turn from transparent to milk-like and then broken. After the colling it is steal like that.
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morticcio
Full Member
"The problem with internet quotes is that you can't always depend on their accuracy" - Aristotle
Posts: 371
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Post by morticcio on May 13, 2015 23:51:58 GMT -8
Interesting experiment. I'm not sure what the figures mean in relation to the stove. Is this a 6" (150mm) model? Do you have a drawing showing the gas flow and dimensions please?
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Post by peterberg on May 14, 2015 1:06:31 GMT -8
First riser - 2.2B Downdraft - 2.2B Second riser- 3.5B I can't quite figure out what you did here. So please enlighten me, what I think you've done is this: The first riser is a side riser or SideWinder. This is short, open at the top. It looks like there's not a lot of space above it (how much?). After that riser the gases are going down (what space?), to the port of the second riser. This is higher and ends in a barrel but this could be a cooktop instead. The numbers above suggest that the first riser is 2.2 multiplied by the base figure. I'm assuming the port is standard height so this riser is the same height as the port. Downdraft 2.2*Base, this is logical because the gases are led down to the floor. The second riser is 3.5*Base with a normal port again so the gases are going up from there. When my interpretation is correct, you've built a trajectory which goes up from the firebox, down and up again. That would mean the friction is higher as compared to a straight riser. But this is more compact and would allow a cook top right above the first riser?
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Post by peterberg on May 14, 2015 1:13:35 GMT -8
Ah! One more intersting thing- the ceramic glass above the first riser turn from transparent to milk-like and then broken. After the colling it is steal like that. View AttachmentAre you sure it's ceramic glass? To me, it looks like the heat stress cracks which are typical for Pirex which is borosilicaat glass. That discolouring doesn't look familiar to me though.
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Post by shilo on May 14, 2015 10:43:44 GMT -8
It looks like there's not a lot of space above it (how much?). - I want it to be close to the D. After that riser the gases are going down (what space?),- the D. the second riser. This is higher and ends in a barrel but this could be a cooktop instead. - no. this is end in a big glass cooktop like matthewwalker did. after that it go to a 55 barrel and then to the chimney. I'm assuming the port is standard height - the first was 2 B the second was something like 1.5 B but very wide at the bottom (trapeze) because I want to force the majority of the gases to go down.
When my interpretation is correct, you've built a trajectory which goes up from the firebox, down and up again. That would mean the friction is higher as compared to a straight riser. But this is more compact and would allow a cook top right above the first riser? - yes but above the first riser it's too hot for a glass. we boil water pot on the last riser ( in amazing rate!).
all the dimensions are only a start line for a serious research. absolutely not the last word!
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Post by shilo on May 14, 2015 10:47:28 GMT -8
Are you sure it's ceramic glass? - I'm sure. it was a good piece of ceramic glass (red from the side) that were one day before that above the riser of matthewwalker core
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Post by shilo on May 14, 2015 11:06:37 GMT -8
the three cylinders can be organize at any trajectory. we tried it in a row and in triangular. we have a very nice ram horns in each ricer (not in the downdraft). we have no testo so we don't know for sure what the cleanness and efficiency but for sure it is the must aggressive dragon we met (after he wake up) it's more close to a nuclear bomb then to a J stove!
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Post by shilo on May 14, 2015 11:13:54 GMT -8
morticcio, it's a 170mm system. I can't make a 2D drawing because it's too complicated and I can't make a 3D sketch soon because I so tired after building 3 rmh in 3 days and driving 200 kilometers..
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Post by peterberg on May 14, 2015 11:47:34 GMT -8
Are you sure it's ceramic glass? - I'm sure. it was a good piece of ceramic glass (red from the side) that were one day before that above the riser of matthewwalker core Hmmm... remarkable, it looks lke you've blown a piece of neoceram just by the heat of a humble wood fire. That glass ceramic is quasi non-expanding and highly thermal shock resistant up to deltaT= 800 C. But apparently the heat shock you exposed it to was too much...
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Post by shilo on May 14, 2015 12:24:45 GMT -8
do you think it's the thermal shock? I thought it's the temp itself. another remarkable point is that a armful of sticks can make over 2.5m of crazy flame pass.
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adiel
Junior Member
Posts: 119
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Post by adiel on May 14, 2015 12:49:50 GMT -8
it was a thermal shock shilo because it was half inside and half outside and it broke after you took out the ceramic fiber blanket.
another sign of the incredible heat of this core was to me the color of the second riser (third cylinder) - it was so white and glowing i couldn't look at it. the clay at the bottom where shilo did the slope peter is recommending was the same color. you couldn't say between the refractory cement and the clay.
i just dont understand how it is possible without strong draft. that core is not drafting strong like peters cores.
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Post by shilo on May 14, 2015 20:29:36 GMT -8
it broke 5 min after I took out the ceramic fiber blanket
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