Here is a link to a prototype I made. For the curious souls..
To make short summary of this build.
1. I want to try to find the optimum working temperature for the stove, and try to keep it at this temperature using air and water cooling systems.
- Air cooling: the metal stove will be able to radiate heat to an area below the wood intake(1). This area reaches from under the bread oven and under the shower the floor, to a duct I plan to build leading to a main ventilation channel for the entire house/cabin. It will also be able to release het to the left and right of the burn channel (2). I want to be able to use this heat to grill vegetables. If you see the build from the front, I will make a door to be able to close the opening on the left hand side. The stove will also be able to release heat to the stone it is resting on (4). That stone functions as is the roof of the bread oven, I hope it will heat enough to bake bread. The stove will also be able to release het from the area between the barrel, and the wood intake (5). This duct is very useful as it allows great access to the area just below the chimney. I plan to burn a torch/big candle there to pre heat the system before starting a fire at the wood intake.
- Water cooling. I want to install a copper pipe system - not sure about dimensions yet. It will cool three different areas. 1. The area above the wood intake. I want to make a coil to keep this area as cold as possible, to reduce the possibility of smoke. I think a coil with 5 turns should be enough; I don't want it to tall. 2. I will then lead the water to the area where the exhaust is pushed down into the bench. I plan to get a copper coil that is 50 or 25 meters, the majority of which I will use in this part. Then I will make a last coil around the barrel (3). This to ensure I can get a nice temperature on the water before it goes to the sunken bath tub.
The plan is to completely cover the barrel with a stone wall, and place a big tile on top. I want to be able to use the heat that is accumulated in this space, and pass it through a closet to dry clothes, fruit, etc. before it leads to main ventilation duct.
I think these are the main cooling/insulating aspects of the build, and in sum will give me some tools to regulate the temperature in each burning session. I also hope to make a door in the front to be able to observe the flow of hot air passing.
After passing the exhaust under the bench it will leave the house where I plan to build a tall pipe of natural stones.