Ancient cooling method used in electricity-free fridge

Ancient cooling method used in electricity-free fridge

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Using new designs and materials science, Evaptainers’ mobile refrigerator updates an ancient evaporative cooling process. The startup’s founders want to address global food spoilage that costs more than USD 310 billion annually. Evaporative cooling works by fitting two containers together and filling the gap in between with water. When the water evaporates through the outer walls, it takes heat with it from the inner container.

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