Cold Storage

Here is another view of the how milk would be poured over the cylinder-shaped tank to rapidly chill it. The tank is cooled from a liquid held in the thermal battery next to it. The thermal battery uses a combination of phase-change materials and other liquids that don't freeze until 27 degrees, lower than the freezing point. The chilling system can run on a car battery which allows milk collectors to process milk when the grid isn't working and avoid dirty diesel generators.

January 29, 2012 4:00 AM PST

Photo by: Martin LaMonica/CNET

| Caption by: Martin LaMonica