Cool off with Ice
Not talking about an cool drink in a glass with ice cubes. How about using ice to cool your house instead of traditional A/C or Central Air? Well, maybe not yet, but new buildings, and existing ones, including hospitals are installing a new system.
Every night some 74,000 gallons (280,000 liters) of water are frozen at Norton Audubon Hospital in Louisville, Kentucky. The hospital used to get all of its air conditioning from a conventional system found in most U.S. buildings, but now 27 tanks of ice sustain a network of cold-water pipes keeping operating rooms at safe temperatures and patients comfortable.
apnews.com/article/c limate-ice-battery-e nergy-air-conditioni ng-ecbfe9bcfb25 
