Solar Kiln questions

[DDW_OR]

GREAT JOB. 8) 8) 8) 8) 8)

I am going to be building 3 joined solar Kilns with North doors like yours.
to dry 2x6x10 Douglas Fir boards from the sawmill.
all 3 will be side by side on concrete blocks, the common walls will be removable to dry a 2x12x21 foot when necessary, these loaded from the West end

may use an Outdoor Wood Furnace to heat them in the future.
radiant floor heat?

[GeneWengert-WoodDoc]

Radiant heat does not work in a kiln as the amount of energy needed at certain times is large, so the heating system must be over-built.  Technically, you can use radiant heat, but it creates drying issues due to variable demand.

[DDW_OR]

i have 3 to 5 squirrel cages, would those work for moving air, better than a box fan. and use a 3 speed motor

squirrel cage, duct to car radiator, then a thermostat to regulate heat
worked great in my dads shop, 50x54