A Man with a Flashlight


The Zeer Pot: Refrigeration Without Electricity
May 5, 2007, 8:18 pm
Filed under: Design, The Earth

Freakin’ cool man. The Zeer, or “pot-in-pot refrigerator,” is made by putting a small clay pot inside a large one. The space between the pots is filled with sand, which acts as an insulator. Water added to the sand evaporates steadily, cooling the inner pot. There’s more:

Each zeer can contain 12 kg of vegetables, and costs less than US$2 to produce.

Experiments assessing its ability to extend shelf life show that tomatoes and guavas can be kept for 20 days, compared to just two without. Even rocket, which usually lasts only a day before wilting, can be kept for five days.

And it was invented in Nigeria.

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