Scientists Invent an Entirely New Way To Refrigerate Things

"Say hello to ionocaloric cooling: a new way to lower the mercury that has the potential to replace existing methods with something that is safer and friendlier to the planet," writes ScienceAlert. It's all based on the idea that melting absorbs heats."The landscape of refrigerants is an unsolved problem," says mechanical engineer Drew Lilley, from the Lawrence Berkeley National Laboratory in California. "No one has successfully developed an alternative solution that makes stuff cold, works efficiently, is safe, and doesn't hurt the environment. We think the ionocaloric cycle has the potential to meet all those goals if realized appropriately...." A current running through the system would move the ions in it, shifting the material's melting point to change temperature. The team also ran experiments using a salt made with iodine and sodium, to melt ethylene carbonate. This common organic solvent is also used in lithium-ion batteries, and is produced using carbon dioxide as an input. That could make the system not just GWP [global warming potential] zero, but GWP negative. A temperature shift of 25 degrees Celsius (45 degrees Fahrenheit) was measured through the application of less than a single volt of charge in the experiment, a result that exceeds what other caloric technologies have managed to achieve so far.... "Now, it's time for experimentation to test different combinations of materials and techniques to meet the engineering challenges," says mechanical engineer Ravi Prasher, from the Lawrence Berkeley National Laboratory. Thanks to long-time Slashdot reader schwit1 for sharing the article.

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