Hi everyone! This is my first post here on Permies, though I've been following Paul Wheaton and the Wiseners for a while on info to heat my studio. I'm a full-time artist (I paint portraits in acrylic) and God recently blessed my family with a home in the country after living for 16 years in the city. We have some partially wooded acreage and a 17' x 25' outbuilding I'm using for a studio.
We moved in April, so I don't know what winter will be like in this building. But in Wisconsin, it gets mighty cold. There is a small propane heater, but I don't want to be slave to propane. My insurance company will not allow me to have a wood stove inside the building, but I can have one outside.
I wanted to build a rocket mass heater, but it's not practical outside, because most of the heat would be lost from the riser, and you would need a huge enclosure to capture it.
So, instead, I'm opting to enclose a normal steel wood stove in cob. Fortunately, I have a lot of clay on my land, and sand/gravel backfill that I can mix together. My church got rid of a furnace a couple of months ago, and gave me their double walled-stove pipe. We also built a pavilion and I was able to get the extra steel siding they had from that project too. I plan on insulating around the cob and putting siding around it. I had to buy some cinderblocks for the base, but I also got some free decorative blocks on Craigslist to keep costs down too.
The project is well underway, and I wanted to share it with you for your thoughts and maybe it would be of help to someone else.
I bought the wood stove off of Craigslist for $10. It had a lot of surface rust, but otherwise is in excellent condition. I painted it with several layers of stove paint and added firebrick to the inside. It has a jacket outside and an opening for a blower. My plan is to pipe the heat in using ducting and forced air. I also put some copper tubing within the cob so that if I want to extract heat and do in-floor radiant heat in a small portion of my studio, I can. I would run pex tubing inside my studio and put an antifreeze/ water mix in and pump it through. I'm hoping the stone/ cob mass will retain a lot of heat that can be absorbed into the tubing and maybe into the air duct as well.
I'll post a link to my video later (once I make it) :) Sorry, the images are not posted in chronological order. I still need to insulate this, install the 20' stove flue, and put siding around it and connect the air duct to my studio. What do you guys think? Thanks for any feedback!