I recently replaced my traditonal woodstove with a rmh, we had to cut some corners due to a lack of space and material and im afraid it may be very cold this winter.
Issue 1. The exhaust exiting the bottom of the barrel only travels 5-10 feet before entering the chimney. I dont think this is enough length to soak up all the heat
Issue 2. We could not find a cheap or close by source for clay so the thermal mass is a mixture of fire brick, large granite stones. Pieces of concrete blocks and a 2:1 mixture of sand and high strength concrete with peastones mixed throughout. Will these materials be viable for thermal mass?
Here is a picture of what we have put together