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
Phase change materials are designed to absorb, store and release thermal energy. They recharge as ambient temperatures fluctuate, making them ideal for a variety of everyday applications that require temperature control. Read more
Video: How phase change material works.
Thanks to its precision, reproducibility and wide acceptance, differential scanning calorimetry will continue to be the main method for benchmarking PCMs. But the inexpensive t-history method, which uses greater sample volumes, can provide key data on supercooling. Read more