Electricity-Free Refrigerator Uses Ancient Technique To Save Food

Electricity-Free Refrigerator Uses Ancient Technique To Save Food
Food & Beverage

The low-cost cooler can help low-income families keep perishables fresh for longer

Leo Lutero
  • 22 september 2016

The Evaptainer is a mini-fridge that doesn’t need even a watt of power to work: it runs entirely on water. Current prototypes can be powered for two days with just one liter.  The refrigerator can be flat packed and costs under $30 each.  The cooling of this electricity-free refrigerator happens when a layer of evaporating water on top of the box takes extra heat with it, cooling the chest by up to 30 degrees versus its surrounding temperature. The colder air inside can extend the life of food from just two days for up to two weeks.

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