I think the most important variable will be the air flow volume to maximize overall temp drop inside the tent. I can't do any testing here in humid Florida, so will have to just tweak it onsite when I get there. I can't think of any simple way to slow down a muffin fan unless I switch to a DC...
I could imagine a non mixing heat exchange system that allows the air exiting the room to precool the intake air, but that would be raising the complexity of the design considerably. Remember, this is a bucket in a tent!
An evaporative cooler cannot recirculate. It requires dry outside air. If it recirculates the humidified air, the evaporative effect no longer works and you just end up with a humid warm room.
Link
(I apologize if this is too DIY or low tech for this forum. I hope it will be seen as at least an academic challenge/puzzle and not a target for insults like happened on another forum!)
My goal is to optimize the design of a portable swamp cooler to my camping setup, for portability, cost...
