Vortex Cooler (Ranque-Hilsch Vortex Cooler)

thingiverse

This homemade vortex cooler features a tube with an inlet for compressed air, producing cold air at one end and warm air at the other. A minimum 5-gallon air compressor providing around 90 psi of flow is required; this setup results in cold exhaust being approximately 25 degrees Fahrenheit cooler than input air and hot exhaust about 15 degrees warmer. Temperatures can be adjusted by moving the end cap slightly. The design was created without scientific knowledge, but welcomes suggestions for improvements. To assemble: print three parts, attach the cover to the cold end of the tube using four 3mm x 6mm screws and possibly superglue for an airtight seal. Slide the cap onto the hot end of the tube. Thread two small holes on the sides, attach push-in connectors (McMaster #5779K241), insert 1/8" tubing, then a reducing T-fitting (McMaster #5779K665) with a 1/4" tubing. Connect the 1/4" tubing to a 90 psi air compressor and adjust the cap for desired cooling effect.