posted 11 years ago
Brian Hall : Welcome to Permies.com and a big Welcome to the Permies Rocket Mass Heaters and wood stove forum Threads, With over 19,000 fellow members world wide
you can expect to come here 24 / 7 and find someone who wants to talk about what you want to talk about, they will have widely ,and possibly wildly different outlooks on
your subject, because you can think outside the box I think that you will hold your own, and we will all remember your first few posts here at Permies and our sister site
Richsoil.com
The easy one first, Your Cob Bench can be a totally free standing monolithic structure, after you have tested the whole system out doors, it works, and you have constructed
the Rocket Burner part, and have figured out exactly where you want your stove pipe for your horizontal chimney to run, you want to seal your duct work with tape, paint all
of the duct work with Clay Slip and then apply the Cob to the Horizontal pipe to make contact with ALL of the pipe, this layer of Cob is what protects your pipe and transfers
the heat energy into your bench, hopefully with zero air spaces so no weak spots and great conductivity. Then as you find places for it the granite or other rock can be added,
and can form a decorative border for your Cob Bench/Built-in-furniture ! In effect you said it backwards from the easy way !
I really want to express to you that you will have a much happier build with more of a chance at success if you do not try to build any system smaller than a 6'' system, for a
first build that is almost mandatory, so my next question to you is how large is the clean out in the floor of your fire place and also the sizes of your interior connections and
the exit from the back of the chimney, and how many 90 degree bends will you have, 1 to go from horizontal to descending vertical ,1 to turn back to horizontal, and after
you exit the chimney base, a 3rd elbow to return the flow of your exhaust gases to a new vertical chimney, all in about 6'.
Then because these bends will act like a p trap under the sink, to use this system you will often have to go outside to remove a Clean out Cap at the base of your chimney to
build a small fire in the chimney to get it to draw ! Then return inside to start your fire in your Rocket Mass Heater RMH!
Just three more simple things to deal with and you can work on your sketch again, I want you to go to - ' village video.org/products/rmh/scenes/ ' -and watch every
video clip, paying attention to how they protected the wood floor from excess heat, the need to brace up the floor as you add 3 tons of cob bench, and in the video clip
about getting your house ready for your stove, the part about stack effect and what will happen with your short chimney when you open an upstairs window !
Think like fire flow like a gas, don't be the Marshmallow ! As always, your comments and questions are solicited and Welcome ! PYRO - Logically big AL
Success has a Thousand Fathers , Failure is an Orphan
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