Rocket Mass boiler?

New to permies but have been stalking you guys for a while. Just a little backstory , I live off-grid up in the mountains not very favorable solar conditions but it been making it all work for 12 + years have a early model wood gasification boiler from centralboiler, that was poorly designed. I feel like a failure is probably coming down the road. So with that being said I have all the infrastructure in place to run radiant piping from my boiler location to house and Shop. Wasn't sure who the best expert was around Western Montana to help maybe do a consultation in building a rocket Mass boiler that could help me with Dimensions so that I don't chase my tail and do it correctly the first time. Or maybe someone will tell me that it can't be done or shouldn't be done I am fairly familiar with building Kilns for glass blowing and all the different refractory options out there. I would like to build a robust, easily maintainable system that could be operated with minimal tinkering. I have a design in mind but really want someone with true knowledge of the gasification process to make sure that it will work and give me the highest gasification Temps possible and best exchange of heat

You will want to look at this link for a boiler design. All the work has been done for you.

walker boiler

Great link. Thank you. I guess I didn't see much rocket action with that stove maybe I'm missing something. Seem to also heat fairly slow compared to the gasification boiler I have now. I just keep hearing rumors of guys reaching 3,000 degrees with their rocket mass stoves and didn't see much evidence of that here. Really was hoping to find someone locally with experience that I can talk some ideas over... also I don't get where the double burn is happening in his ceramic fiberboard designs. I guess I have a lot to learn

Hi Dan;
Nobody has gotten a RMH to 3000 F.
Peter Berg has recorded the highest temps. I don't remember what he reached but it wasn't near 3000.

I think the issue with a rocket mass boiler is always going to be the heat up time--the real key is the heat retention times. With an insulated water container, you can have hot water temps for long periods without needing to burn. Then, once that water starts to cool down, you have warm water to heat up rather than cold keeping your burn time nice and low.

Thomas has already mentioned that 3000F is not going to be achieved. I did a quick search for that number of Peter's and it is closer to 2200F.

Rockets are not "double burners"--they use a primary air for initial combustion and a secondary air port to inject oxygen into the hottest point of the stove to create greater combustion. Keep looking through permies, it has a search function that works well, and keep asking questions--we will keep answering them.

I guess I've seen quite a few images like this that show a secondary burn and also a heat Riser similar to this with gaps for the gases to continue onward to the flu. I will keep trying to search function and see if I can answer my own questions. And I appreciate all the advice

thomas rubino wrote:Hi Dan;
Nobody has gotten a RMH to 3000 F.
Peter Berg has recorded the highest temps. I don't remember what he reached but it wasn't near 3000.

What about Ernie and Erica? I think I remember reading where they did a 10" or 12" system that melted refractories far in excess of what should have been physically possible with a wood fire, but I don't exactly remember where I read it.