lumber stacked to dry
This is the small finishing kiln Andy built within the shop. It holds more than enough lumber to complete almost any project at one time.
Heating system to dry lumber
The heat source is some reclaimed baseboard hot water runs left from a renovation project. The hot water is pulled off the main heat exchanger he built which heats the whole shop. The heat from the water in the pipe transfers to the fins of the heat run and radiates off, rising up through the layers of lumber, and drying the wood in a gentle manner. The source of all this hot water is our outside wood boiler. Andy has it plumbed to heat my wool shop and his wood shop, but we also pull some extra 'free' heat off it to bring the water heater up to temp faster for washing wool, and now it gives heat to this little kiln, too.
A couple of holes in the top, far corner of the space will allow for hot air to vent out and carry humidity with it.
Sealed shut, and working
Simple design, uses 'free' energy, and works quietly all the time without any input from him.
Now if I could just find a way to get wool to wash itself.