Hi all.
Like most of you, I share your frustration with trying to live better despite regulations and insurances that prefer we don't. And so, I can't legally build a
RMH in my home without spending $2000 plus on a certified masonry heater builder. Apparently any old
wood stove is ok if it's EPA, because they care about the environment if it's in the house, but if it's outside their environmental value dissipate quickly and I can build anything i like 10 feet from the house?? Anyhow, *rolls eyes* i'm trying to build a
rocket stove batch type heater with pipes going through it as a heat exchange that will vent hot air into the house from 10 feet.
Lots of design issues to discuss and things to try for sure, but my main one is about the toxic fumes most metals give off when heated to high temps. Galvanized pipe is out of the question. Copper? I've heard mixed information. Mostly because copper is used for
hot water, but can it withstand the heat inside a
rocket stove? Aluminum will melt. So, i'm currently considering just clay pipe inside a big clay bell and only attaching the aluminum pipe onto the outside of the clay where it is colder.
Ok, I realize this explaination is just confusing. i'm going to just draw a picture. What i'm looking for is something for the green pipe. or maybe just make it a void in the clay.
Main question: best metal if any to use inside a rocket stove that won't give off fumes. remember this is for venting into the home not a chimney where it will go "up in smoke"
Secondary question is about wool and clay. i've heard good R-value comes from
straw or paper clay rocket stoves. I found one source that used wool in the clay, but lost it. Will wool just burn out like straw and paper or does it provide extra insulation. I like wool, but i'm guessing it will just burn out and some type of rock, like rockwool, vermiculite or perilite is the only thing that can withstand the heat.