This use of a solid for refrigeration reminded me of the elastic band refrigerator: https://hackaday.com/2016/08/25/a-refrigerator-cooled-by-rubber-bands/ https

This use of a solid for refrigeration reminded me of the elastic band refrigerator: https://hackaday.com/2016/08/25/a-refrigerator-cooled-by-rubber-bands/ https://hackaday.com/2016/08/25/a-refrigerator-cooled-by-rub... a not practical but still interesting use of elastic solids for refrigeration.