Make An Electricity-Free Zeer Pot Fridge To Keep Your Drinks And Food Cool In The Sun

An evaporative cooler, also known as a zeer pot, is an ancient device that provides refrigeration for food and drinks when the temperature outside is blazing. And they're really simple to make, with just two containers that fit inside each other. Who needs an esky?

The video above demonstrates one variation of this basic cooler. As the wet sand evaporates, it removes the heat from the inner container, lowering the temperature.

As's video shows, the temperature starts to drop pretty quickly, but it may take some time for the zeer pot to get really cold. In six hours, the interior went from 30 degrees C to 11 degrees, while the temperature outside was 35 degrees.

This DIY project is great to have in case your electricity goes out or for keeping your beer cool in the sweltering heat (the hotter it is, the faster the evaporation and quicker the cooling).

Other really neat variations to try are the solar cooler in a can and Dew Bucket cooler, both made by James R Patrick out of paint buckets. They have convenient handles.

Zeer Pot Fridge. Cool your food or drinks with no electric needed! [YouTube via sustainblog]


    Is it just me or was that intro to the video needlessly "epic"? Seemed more like a promo video for a news channel than the intro for a YouTube show.

      Yep, and at 12 minutes long we almost lived the full experimental experience too!

    I presume that the west sand does NOT evaporate but rather the moisture in the wet sand.

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