smlobx
Lost again
Interesting that he could power it with a solar panel or 12 volt battery. I think with a little engineering it would last several more hours...
http://bgr.com/2015/06/26/diy-air-conditioner-cooler-fan-pvc/
http://bgr.com/2015/06/26/diy-air-conditioner-cooler-fan-pvc/