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Web17 feb. 2024 · Swamp coolers are most efficient on the roof: cool air sinks, after all. But there may be issues with placement, leakage, or supply that prevent that. Consider … WebA pot-in-pot refrigerator, clay pot cooler or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner … dashboard upb
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