Student Invents Solar-Powered Fridge for Developing Countries
March 13, 2009 by Dirk Visser
Filed under innovation
Proving once again that the best ideas are often the simplest, 21-year-old student/inventor/entrepreneur Emily Cummins has designed a brilliant portable solar-powered refrigerator that works based upon the principle of evaporation. Employing a combination of conduction and convection, the refrigerator requires no electricity and can be made from commonly available materials like cardboard, sand, and recycled metal.
Simply place perishable foods or temperature-sensitive medications in the solar refrigerator’s interior metal chamber and seal it. In-between the inner and outer chamber, organic material like sand, wool or soil is then saturated with water. As the sun warms the organic material, water evaporates, reducing the temperature of the inner chamber to a cool, 6 ºC [43 ºF] for days at a time!
Original article: Daniel Flahiff. Inhabitat. 12 January 2009. Read more…
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The fridge is great. We know hundreds (probably thousands actually) in our area alone – but right, the usual…another great way of making life easier and more efficient, but how do we get hold of these things?
the solar refrigerator is simply great.we in the sub-saharan Africa need things like this to be cost effective.i so much admire it,can u send more requirements to it to my box?