A new type of crystal could enable refrigerators and air conditioners to keep us cool without warming the planet.
Refrigerators and air conditioners get their cooling power by circulating a liquid through the device, which absorbs heat and causes chilling through a cycle of evaporation and condensation. But many such liquids contribute to the greenhouse effect, causing further warming when they leak. Now, Jenny Pringle at Deakin University in Australia and her colleagues have made a climate-friendly alternative to these liquids using “plastic crystals” – crystals with molecules that can move just enough to make them pliable.
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