Plastic crystal breakthrough hints at eco‑friendly cooling future
Scientists have developed a new type of refrigerator distinguished by the use of special "plastic" crystals, which have the potential to replace the traditional cooling systems found in refrigerators and air conditioners.
Researchers from Deakin University in Australia, led by Dr. Jenny Pringle, have advanced a new type of crystal that could revolutionize cooling technology. These "plastic crystals" (OIPC) can absorb heat when subjected to extreme pressure, potentially leading to more environmentally friendly refrigerators and air conditioners.
Traditional cooling devices operate on the principle of circulating a liquid that absorbs heat through a cycle of evaporation and condensation. Unfortunately, this technology is not without its drawbacks. Leaks can occur, releasing substances into the atmosphere that contribute to the greenhouse effect. The new crystals may offer an alternative to these liquids.
Under high pressure, the crystal molecules transition from a random orientation to an ordered lattice. When the pressure decreases, the crystals return to a disordered state, absorbing heat and cooling the surroundings.
Previous research on "pressure-based" cooling did not yield satisfactory results, as the materials operated at impractical temperatures. However, the crystals developed in Australia function within the range of -35°F to 50°F, which is ideal for household refrigerators and air conditioners.
Technological challenges
The technology is currently in the laboratory testing phase. The required pressures are very high, comparable to those thousands of meters underwater. Additionally, with repeated use, the crystals may lose their ability to absorb heat as their structure becomes increasingly strained. Nonetheless, research on this technology could contribute to the development of more ecological cooling solutions in the future.
