Thanks for the visuals... helps me a LOT.
Question... if the miners were exhausting into a separated "hotbox" or hot zone... and THAT space was being sucked out (basically as you've drawn)... and the "intake" for the miners was the inside air on the "cool" side... assuming the building has some form of insulation, would it not be better to flip your intake inside, so you're shooting the room air into the U vs. the outside air. I'm just wondering if you'd be starting at something slightly cooler than the shaded outside air.
Or maybe the whole building, insulated or not, is a virtual hotbox, so your design makes more sense. Hmm.
We have begun to talk about a 20' shipping container, with a "lean to" of solar panels that go over the container's roof height to provide some building shading.
You do not want a loop system.
If you run air into that u underground it will be cooler air.
just use exhaust fans to,pull air.
I shade the entrance to the hole in the ground.
That air enters at non desert temps.
at least 10 f cooler then the outside air.
the key is the shading tarp and the hole.
note the circle that covers the air hole into the mine that is a filter
