Not trying to be funny, but would wood season faster in an enclosed shed or barn that gets sunlight most of the day faster than in stacks outside? I know that the inside of my wood shed, which holds about 5 cords, gets pretty darn warm, especially when the sun beats down on it. Wouldn't it sort of slowly bake the wood and dry it out? Last October I put some standing dead ash that I cut and split in there and that ash is now 20% or less moisture. I split it open and check several with a moisture meter. I am guessing that sitting in the shed, it dried faster than outside.
I have about 6 cord CSS in my old corn crib: I'm hoping it's the perfect storm with southern exposure, prevailing west wind AND open slats for air exchange. It was engineered to dry ear corn, so it should work for wood, right? PS it's also 2 feet above the dirt on 2-inch plank flooring. :D 