Jack, I'm intrigued by this.
Am wondering how you envision establishing a passive swamp cooler
setup? That is, no pump. I understand how you will move the air (via
heat convection with the solar chimney). But how will you move the
water to keep the the pads moist? Or would this require refilling
A lot of national parks use the solar chimney for ventilation of outhouse
style toilets. It is very effective. They use about a 9 inch diameter PVC
pipe that goes up the entire side of the building and several feet above, so
it gets a good amount of sun exposure. I think you could do it with smalle
