Swamp Cooler

thingiverse

Print and assemble these parts in conjunction with a 120mm pc fan to create a personal air conditioning unit (swamp cooler). The cooler works well in dry environments where ambient humidity is low enough to promote quick evaporation of water from a permeable material placed in the hopper of the swamp_cooler_body (https://en.wikipedia.org/wiki/Evaporative_cooler). Cut and insert segments of cardboard (60 x 120mm) into the hopper. Orient the cardboard to allow air to pass through the fluting (https://en.wikipedia.org/wiki/Corrugated_fiberboard), and carry cool, humid, air out of the unit. In my testing, an inlet bevel was necessary to decrease turbulence on the inlet side of the fan. Additionally, the bevel assisted in reducing noise. I recommend printing both pieces and joining them to the fan with M4 20mm screws and bolts. Consider the images I uploaded to assist visualizing assembly and fan selection. I used an old fan I had from a dead computer (similar to this model: https://www.digikey.com/product-detail/en/sunon-fans/KDE1212PMV1.13.MS.A.GN/259-1438-ND/1249311).