PepsiCo established the Food for Good program in 2009 to deliver meals to kids in underserved neighborhoods during the summer. But the expense of refrigerated trucks limited the program’s reach. In 2010, PepsiCo began working with Entropy Solutions to find a solution. Together they created the Cold Box, an inexpensive and reusable container that keeps food at a safe temperature for hours without refrigeration. It’s powered by PureTemp. Read more
Photo: The first Cold Boxes were field-tested in 2011. It performed well in record heat that summer, and its use has expanded each year since. - courtesy PepsiCo Food for Good
Self-modulating air register (Acta Technology), transport container assembly (Paradigm Design Solutions), convection-based temperature-assured packaging system (Sonoco) and refrigeration devices and systems (Microsoft founder Bill Gates is listed among the inventors). Read more
Here's how phase change material works.