Ingenious evaporative cooler built to cool camel's milk in Somalia. I love the use of corrugated galvanized iron sheets and sisal sack fabric to create the airflow and cooling system.
The upper ends of the fabric overhang in a water trough that rings the top of the cooler. Capillary action causes the water to slowly trickle over the inner and outer surfaces. A small vent keeps the interior air circulating and wind guides or tunnels direct air flow over the exterior surfaces.
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http://www.treehugger.com/files/2006/08/mohammed_bah_ab.php
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http://en.wikipedia.org/wiki/Coolgardie_safe
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AyayayayayayayyAyayayya..death to the infidels! Ayayayayayeeeeee
oops hold on great satans, I must milk my camel.....
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