How to Make a Desert Fridge: Unterschied zwischen den Versionen
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=How to make a desert fridge or zeer pot'''= | =How to make a desert fridge or zeer pot'''= | ||
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''Zeer Pot. Drawing Khalifa Kamal'' </center> | ''Zeer Pot. Drawing Khalifa Kamal'' </center> | ||
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==Links== | ==Links== | ||
See a longer discussion at: | See a longer discussion at: | ||
http://www.scienceinafrica.co.za/2004/september/refrigeration.htm | http://www.scienceinafrica.co.za/2004/september/refrigeration.htm | ||
Aktuelle Version vom 5. Februar 2026, 10:23 Uhr
Inhaltsverzeichnis
How to make a desert fridge or zeer pot
Short Description
- Problem: Fruit and vegetable storage in hot climates
- Idea: Using the cooling power of evaporation. Two unglazed clay pots placed one in another and a wet sand layer in between.
- Difficulty: Easy
- Price Range: Local price of 2 unglazed clay pots
- Material Needed: 2 unglazed clay pots, sand, water, cloth or lid.
- Geographic Area: Hot and dry climates
- Competencies: None
- How Many people? 1
- How Long does it take? Wet the sand twice a day
Description
You can make a simple and effective cooling container for a dry climate with two clay pots, some sand, a cloth, and a little water. It works thanks the evaporation of water which cools down the inner pot.
One pot needs to fit inside the other with enough space between the two for a layer of sand (a few inches or a bit less than 10 cm thick). The cloth is large enough to cover the top of the largest pot.
Put a layer of sand in the bottom of the larger pot. Set the smaller pot on the sand and fill the gap between the two with more sand, right up to the top. Wet the sand. Put food in the inner pot. Cover the whole with the cloth or a lid.
Wet the sand about twice a day.
The zeer is the brainchild of teacher Mohammed Bah Abba. Bah Abba passed his idea to the Intermediate Technology Development Group (ITDG), which, with the assistance of researchers at the University of Al Fashir, carried out experiments to measure its value in maintaining nutrient content and extending the shelf life of vegetables.
On average, two zeers are used in homes, while women on the market will have three to four.
Zeer Pot. Drawing Khalifa Kamal
Links
See a longer discussion at: http://www.scienceinafrica.co.za/2004/september/refrigeration.htm
