Sounds to me like 6-8" is the tyical size. I am building a hydronic boiler (and system) from scratch. Open to atmosphere, outdoor mounted rocket boiler, planning to heat two buildings using gravity fed wood chips but all of this depends on how each stage of R&D goes. Lots of variables with burning wood chips, I may end up running into too many dead ends but I just got started so we'll see.
What do you mean by 6-8"? Are you referring to the size of the heating space?
The reason why I am asking if mass rocket stoves can be scaled up is because I live in an industrial zoned area in Kamloops, BC, Canada. There are a number of 6000-8000sqft plate-sized warehouses using wood heating and air-tight stoves, some of them with hydronic systems. We also have a large number of welders and engineers, which could seal plans, in the industrial park. Presently, the City of Kamloops will not give permits for NEW wood heating systems because they cause wood smoke smog. This would be a serious issue if many households in Kamloops started used air-tight stoves. (Actually, there was air quality advisory in a neighboring community just recently caused by private home wood smoke smog.)
BUT IF the mass rocket stoves could be scaled up and only exhaust CO2 and water vapor, there would be no reason not to heat with wood in cities because no wood smoke smog would be formed. There is the problem of City permit approval and problems with insurance on businesses because these mass rocket stoves do not have CSA Standards, thus voiding fire insurance on buildings. I know engineers can stamp plans and get around BC Building Code issues so I am also wondering if that could happen with CAS Standards. () Living with regulation is a bitch and really hard on innovation and implementation of innovative technologies.
I have lots of questions and very few answers.
1. Has anyone got CSA approval for mass rocket stoves?
2. Do you have a range of cube volumes that work practically with the mass rocket stoves?
3. Could you recommend any books or technical papers on this topic? I might not be able to understand the technical papers but I could finds some people that could.