Phys.org  June 6, 2023 Various high-efficiency caloric cooling techniques meet the goal of developing zero–global warming potential refrigerants but scaling them up to technologically meaningful performance remains challenging. Caloric cooling is a different strategy that instead relies on moving solids through a phase transition. Researchers at the University of Maryland developed an elastocaloric cooling device that compresses fatigue-resistant bundles of nickel–titanium tubes to obtain an attractive cooling power and maximum temperature difference. Their cooling system has a maximum cooling power of 260 watts and a maximum temperature span of 22.5 kelvin. Its key feature is the compression of fatigue-resistant elastocaloric […]