Ok lets say that I have a big garage with 7 windows, big garage door and a normal door. If i where to make a tunnel from one window to another but use insulation styrofoam as the walls of the tunnel do you think the walls would make it hotter than it should be? Maybe I should go with plywood?
have as much of an exhaust fan as you can get (in my opinion, there is not overkill here) and put that on the highest window of the garage leading out. now you just need to know where you are going to be getting your "cooler" air from and build walls on each side for the tunnel. as long as you exhaust your hot air faster, you are set.
I have two windows directly facing each other and have two 2500cfm fans (one intake, one exhaust) curretly the window fans are not sealed up and sit about 8" infront of the window. Ideally everthing should be sealed from one window to another (the tunnel) along with the window fans right?