Dan Vz

I've seen that design as well. I have some reservations with it. I currently have over 400 gallons in my system and it's amazing how  quickly the heat is pulled out of it. The lower the water temp the more my pumps in the house have to run and so being off grid at all adds up to a similar footprint for my battery system. My biggest issues are that now I'm dealing with shoulder seasons and Heating 400-600-1000 gallons of water for just 5 degrees in the house to take the edge off and make it more comfortable, Seems like a big waste. My wood firedboiler if has proper coals then goes into gasification fairly quickly upon restart, but I understand that people want zerosmoke from these rocket mass heaters which I can appreciate.

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

Owning a wood fired boiler, most of the suggestions above are correct. Unseasoned wood, firing up boiler from cold temperature, airports can plug with creosote. And every time they turn on due to water set point it takes a little bit till coals are revived and gasification occurs. Boilers can also bridge where the wood isn't making contact with the gasification port. That's why I really wish there was a good rocket mass boiler design. By having the unit turn on and off they do build more creosote then a rocket mass stove which burns completely all the way through. But I do like the idea of temperature control  and having something burn for 12 to 24 hours without the need of reload

In the future a microFarad test needs to read 86 +20% -0% that will show whether it is good or bad, option on most decent multimeters

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

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