German researchers have created a cooling system manufactured with 3D printing that eliminates polluting gases and reduces electricity consumption. Instead of traditional compressors and refrigerants, this technology uses solid materials with shape memory that, when deformed and recovered, absorb and release heat. The 3D-printed design optimizes thermal transfer and minimizes losses, according to EcoInventos.
How shape memory alloys replace gas ❄️
The thermoelastic principle is based on alloys that change structure when mechanical stress is applied. When deformed, the material absorbs heat from the environment; when it recovers its shape, it releases it in a continuous cycle. 3D printing allows the creation of channels and surfaces with complex geometries that maximize thermal exchange. This avoids the use of hydrofluorocarbons, responsible for the greenhouse effect, and reduces the energy needed to maintain low temperatures in domestic or industrial applications.
Cold without gas: the fridge that doesn't know what the Montreal Protocol is 🍺
So the Germans have managed to get an alloy to do the work of a gas without polluting the planet. Now we just need this technology to reach our kitchens so the refrigerator stops sounding like a tractor and, by the way, saves us on the bill. Next up, ice will be made just by pressing a button, although surely someone will find a way for the system to also cool beer faster.