artem
New Member
Posts: 19
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Post by artem on May 29, 2024 3:40:03 GMT -8
Hey all, Very excited to share with you all my recent development - a DSR2-inspired rocket stove for a mobile camping sauna. Bottom part is made of - on the inside, i.e. direct fire & gasses path - ceramic/cordierite pizza stone, insulated with ceramic wool, and put in a stainless steel box. Top part is made of mild steel and is removable, main reason for selecting that material is heat conductivity and thermal mass (using 5 millimeters thick steel). There is also a water heater (small tank) and a steam generator pipe (inside the top metal box). It gets over 1000ºC inside (temp sensor wire right over the afterburner), and that is as high as my sensor is able to read, lol. I'll try to upload a video of the whole thing in operation later. Huge thanks to this forum and to peterberg personally for all the valuable research and info! You guys rock! |
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Post by fruitbat on May 29, 2024 12:24:09 GMT -8
Looks great, eagerly awaiting an action video! Did you get any photos of the construction? Interested to see how the kiln shelves went together.
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artem
New Member
Posts: 19
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Post by artem on May 29, 2024 19:54:02 GMT -8
Looks great, eagerly awaiting an action video! Did you get any photos of the construction? Interested to see how the kiln shelves went together. Yeah took plenty actually. Something like this.
Afterburner/riser:
 From the front:  With stumbling block visible:
 First burn test of the core:
Putting it all into the housing:   |
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artem
New Member
Posts: 19
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Post by artem on May 29, 2024 20:16:13 GMT -8
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Post by peterberg on May 30, 2024 3:46:21 GMT -8
Huge thanks to this forum and to peterberg personally for all the valuable research and info! You guys rock! Thanks for the compliments, glad to be of help. |
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Post by fruitbat on May 30, 2024 4:08:53 GMT -8
artem that looks great. All those interlocking sections should keep cracking down, and easy to replace a part if it eventually does break up. Please keep us posted with how it holds up! I take it the burn quality is good and clean?
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artem
New Member
Posts: 19
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Post by artem on May 30, 2024 14:34:23 GMT -8
artem that looks great. All those interlocking sections should keep cracking down, and easy to replace a part if it eventually does break up. Please keep us posted with how it holds up! I take it the burn quality is good and clean? Full disclosure - the large tiles have already developed hair-thin cracks of quite a weird shape - I think that's just stress due to a thermal gradient. They are still holding together though, not falling apart. But yeah, should be easy to replace. The liquid glass/fine clay mix that I used to seal it all together is holding remarkably strong though, I am very surprised. I am keen to try and build another, lightweight burner out of metal (stainless steel, perhaps) that is covered by a thin layer of that stuff, with oxides/talcum mixed in (this guy is my inspiration - timtinker.com/diy-refractory/). Burn quality is fantastic - no visible smoke coming out of the flue, although I don't have a CO tester to actually take a reading. Gotta say, very happy with how it turned out. |
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Post by fruitbat on May 31, 2024 7:51:47 GMT -8
Thanks for the detail. Some cracking is always going to be likely in such a rigid material unless it is made in many small pieces, which would then be difficult to keep in place....
It's all a balance- vermiculite doesn't seem as prone to cracking, but lack the durability of the cordierite.
Is the liquid glass a type of waterglass?
The link is interesting... I wonder how it would hold up on big surfaces like a heater core.
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artem
New Member
Posts: 19
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Post by artem on Jun 2, 2024 17:55:55 GMT -8
Is the liquid glass a type of waterglass? Yes, that's what I meant to say. Sodium silicate. |
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Post by fruitbat on Jun 3, 2024 23:29:54 GMT -8
I read through that link again- there's loads of potential for small, low-cost cores if a relaible and long-lasting coating for metal can be found.....
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artem
New Member
Posts: 19
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Post by artem on Jun 5, 2024 21:01:17 GMT -8
I read through that link again- there's loads of potential for small, low-cost cores if a relaible and long-lasting coating for metal can be found..... His site is quite a treasure trove, he has done heaps of experimentation and logged the results. He's a retired scientist from what I read there. |
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