Roeland's catenary shaped brick oven.

[Xabia Jim]

Re: Roeland's catenary shaped brick oven.

I noticed that too, the insulation looks like it will do the trick for what you've designed.

I'm going to be curious about your hearth temperatures.
XJ

[Xabia Jim]

Re: Roeland's catenary shaped brick oven.

and what are your primary cooking intentions?

Looks more like quick heat for pizza.....

[jeff]

Re: Roeland's catenary shaped brick oven.

No wish to hijack, and perhaps new thread is in order.
As XJim said, floor temps over, say three days , would be most welcome.

[Peterrr]

Re: Roeland's catenary shaped brick oven.

I intend to use the oven as a quick heat pizza oven that will have enough
heat capacity to bake 4 loafs of bread after the pizza making is done.
Total heated mass is 480 Kg, which I expect (hope..) will be enough
to cook 6Kg of bread.
There will be 3 thermocouples:

- Inside the oven measuring the air temp 20cm above floor level. (see pic)
- Underneath the floor tile measuring hearth temp (see pic)
- On top of the dome between brick and insulation. (no pic yet)

I will record temps and make graphs as soon as insulation job is done.

What do you mean by floor temps over 3 days?
You mean 3 days after fire is out (cooling down)? Or leave the fire
going for 3 days?

[Xabia Jim]

Re: Roeland's catenary shaped brick oven.

I think he means the cooling curve over 3 days after the fire is done.

I'm curious about the temperature range across the hearth as I'm guessing the back corners are going to be cooler. (but you'll probably need a temp gun for that but might not want the investment with the thermocouples)



Jim

[jeff]

Re: Roeland's catenary shaped brick oven.

Peterrrabit, are you in?
Listen to The People, mate. These folk know which way is up: these blokes have been there an done that, while I was still eyeing off a nipple.
So my ant heap is SO well insulated beneath, plus a fair show on top.
At 50mm of each, I'd suggest you may just get by.
Eyes closed: ears open. tru.
teach.

[Peterrr]

Re: Roeland's catenary shaped brick oven.

Last weekend I decided to "test drive" the oven by making a pizza.
I covered the oven with 2 layers of Superwool blanket and applied some
aluminum foil on the temporary chimney setup...
At the time the pizza went in the top dome sensor (between brick and Superwool) read 300C.
The bottom sensor (under the floor tile) showed 200C.
Although the pizza was good and very tasty, it was not golden brown...
Next time I will try higher temps..
Pics attached..

R,
R.

[Xabia Jim]

Re: Roeland's catenary shaped brick oven.

How long did it take to cook?

You can cook pizza at that temp, it's about the temp of a conventional oven.

You'll probably be happier with another 100 degrees though.

X

[Peterrr]

Re: Roeland's catenary shaped brick oven.

It took 4 minutes, which is not too bad.
I would like to try the 90 seconds in a 485C oven though..

R,
R.

[Peterrr]

Re: Roeland's catenary shaped brick oven.

I started finishing the outside of the oven.
I cast the stainless steel chimney in refractory concrete, but I think that
was a mistake.
To increase the drying process, I heated it to 80degr C using a halogen lamp.
Unfortunately it already started to crack
I expect it to crack even further when I fire it up.
So I consider that part lost...
Will have to think of a different way to construct the chimney.
Perhaps I will make an all SS sheet construction.

I constructed a mold out of wood and aluminum sheet to make
the outer shell of the oven and that works out really nice.
The shells that come out have a real nice smooth finishing.
Pics show the mold and the first 2 shells placed on top of the oven.
I am using 2 layers of Superwool ceramic blanket and since I had some
extra space left I decided to add a sheet of fiberglass insulation.

R,
R.

[Peterrr]

Re: Roeland's catenary shaped brick oven.

A brief update on the progress:

I finally finished the 6th (and last) shell to cover the dome.
I'm very happy with resulting catenary shape of the dome.
Started also some tiling on the front for the landing.
Next oven (..) will have a bigger landing area, would be more practical...

R,
R.

[jengineer]

Re: Roeland's catenary shaped brick oven.

This gets my vote for one of the better fire shots


any chance of getting a higher resolution for wall paper?

[Peterrr]

High resolution fire shots.

Here they are, resolution 1500x1000, should be OK for wall paper.

[jengineer]

Re: Roeland's catenary shaped brick oven.

Is it me and the wife or is anyone seeing faces in these fires??

[Peterrr]

Re: Roeland's catenary shaped brick oven.

One of the Pizza-party guests would not leave.
We could not find a better way to get rid of him...