Slashdot Mirror

← Back to Stories (view on slashdot.org)

Inventor of Low Tech Fridge Wins Award

Posted by michael on from the swamp-cooler dept.

juju2112 writes "Mohammed Bah Abba of Nigeria won a Rolex award for his pot-in-pot invention. Here's how it works. You take a smaller pot and put it inside a larger pot. Fill the space in between them with wet sand, and cover the top with a wet cloth. When the water evaporates, it pulls the heat out with it, making the inside cold. It's a natural, cheap, easy-to-make refrigerator."

1 of 369 comments (clear)

  1. This is kind of stupid... by Biotech9 · · Score: 0, Redundant

    Its just simple physics. A liquid evaporating takes heat, so wet stuff is cold, and wet stuff in the wind is very cold (as more relatively dry air flows over the wet surface and takes more water.)

    Its nice that he's using pots, but to me its too simple and mundane to garner an award, its like giving an award to someone that 'discovers' a cheap water filter

    "Just pour the dirty water through this peice of cloth and voila! "