Still Seeking the Solar Powered Air Conditioner

treehugger.com — The Crosley Radio Corporation introduced a water-ammonia mixture refrigerator in 1929: "The Icyball is an intermittent heat absorption type of refrigerator. A water/ammonia mixture is used as the refrigerant . Water and ammonia combine easily. So, they combine in the hot ball at room temperature. When the hot ball is heated, for about 90 minutes...