Square barrel bell, your thoughts? I need help too.

[satamax]

Hi everybody.

Peter, if you pop around, and if you don't mind replying. Do the dimensions of this one seem good enough?

easycore4.skp (226.09 KB)

I know i need to open the P channel port a smidge, to account for the steel thickness. And i need to put the two ramps in there.

And another question, would you think "tying wire" would do the job of holding the two parts of the firebox together?

Thanks a lot.

Max.

[satamax]

So, here's what has been rumaging in my head lately.

I have some of thoses porous, "pierre du gard" which we use for the surounds of chimneys. All in yellow on the drawing. The big vertical slabs are some firebrick i have all the rest seems very obvious. Just missing the square barrel. A friend from an internet forum is suposed to send it to me soon. Otherwise, i have all the components. That would feed in the half barrel concrete bench i've made. And go through a 11m chimney. I have an isa of 3.2m² if i put the half barrel bench behind this. A bit small. But i don't know how to fit better. The idea behind this is "all dry stacked" and helf by tying wire where needed. I might put few screws and plugs in the sides. Don't know. The bottom space in between the stones will be filled with lose vermiculite or perlite. Actualy, about this, what would be your opinion. I can find both at aproximately the same price. I find the vermiculite all right. Never worked with perlite.





easycore4.2.skp (327.86 KB)

[satamax]

Hi guys.

Here's the latest version of the drawing.

easycore4.4.skp (354.89 KB)

It's all to size with the stones i have. As few cuts as i can. If ever anybody has an idea about the gap between the flat stones under the core.

I will hold the side stones and the front ones with tying wire for rebar. Any advice on doing nice "knots"

Will 3cm of rockwool be enough? under the core? 4cm on the sides? The top will have more.

Thanks a lot for any advice guys.

[peterberg]

Ehrmm... Why is the port larger and the p-channel shorter? This way, there's more air coming in at a lower temperature. The bell should work like that but the half barrel is much lower than that isn't it?

[satamax]

Hi Peter.

Well, portwise, i realy don't know where to go.

Thoses refractory flues i have are about 18x18 cm with rounded corners. IIRC, i took 70% of the square size as an actual measurement for the flue size. Trying to account for friction. But still, it makes an horendously large port for the batch box size. I can't get the rounds anymore. I have the four squares nedded for this one. There's a few left in the stock at my Italian hardware store. And after, i'll have to look for something else. On this one, i realy don't want to make any mistakes.

The half barrel entry will be at about floor level. 3cm of concrete below. , and i have the option of using either 150, 160 or 180mm i have in pipes for the moment. I also have few bits of stainless 200mm. You think i should lower the floor for the rocket core down to the ground? It will be real low then. If only i could do a trench in the 60cm wall behind me, and fit the flue in there. I would have the best accumulator/Mass in the world.

Thanks for your reply.