Eco-friendly solid-state cascading elastocaloric refrigeration with record-breaking efficiency

https://techxplore.com/news/2024-08-eco-friendly-cooling-device-efficiency.html

">48% increased efficiency, T75°K lift on water side, 100% recyclable... based on latent heat in cyclic phase transition of nickel-titanium shaped memory alloys... different phase transition temperatures to operate cold, intermediate, and hot end, respectively. By matching the working temperatures of each unit with the corresponding phase transition temperatures, expanding overall device's superelastic temperature window >100 K, each unit operating within its optimal temperature range, enhancing cooling efficiency"