Eco-Cooler: The Zero Electricity Air Cooler

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Most homes in Rural Bangladesh are made out of tin huts that go over 45° Celsius during the summer. Re-purposing used soft drink and water bottles, The Eco-Cooler works without electricity to reduce temperatures up to 5° Celsius.

Here is the blueprint to DIY: http://www.eco-cooler.com/.
via – Grameen Intel Social Business Ltd.

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