Dec 29, 2017 #2 Baluncore Science Advisor 2025 Award Messages 17,109 Reaction score 10,623 Welcome to PF. Peltier effect, uses DC current. https://en.wikipedia.org/wiki/Thermoelectric_effect or; Vortex tube, uses compressed air. https://en.wikipedia.org/wiki/Vortex_tubehttps://www.aliexpress.com/item/1PC...32820527238.html?spm=a2g0s.8937460.0.0.Ept4Bf https://www.aliexpress.com/item/130...32829170807.html?spm=a2g0s.8937460.0.0.Ept4Bf Last edited: Dec 29, 2017
Welcome to PF. Peltier effect, uses DC current. https://en.wikipedia.org/wiki/Thermoelectric_effect or; Vortex tube, uses compressed air. https://en.wikipedia.org/wiki/Vortex_tubehttps://www.aliexpress.com/item/1PC...32820527238.html?spm=a2g0s.8937460.0.0.Ept4Bf https://www.aliexpress.com/item/130...32829170807.html?spm=a2g0s.8937460.0.0.Ept4Bf