Einstein-Szilárd refrigerator

Whatever happened to the refrigerator Einstein helped invent?
While it never became a commercial success, its underlying concepts became the basis for cooling nuclear breeder reactors.

http://en.wikipedia.org/wiki/Einstein_refrigerator
http://en.wikipedia.org/wiki/Absorption_refrigerator

Einstein and Szilard‘s idea avoids the need for freons. It uses ammonia, butane and water and takes advantage of the fact that liquids boil at lower temperatures when the air pressure around them is lower.

Einstein’s green refrigerator making a comeback
In 1930, Einstein and Leo Szilard designed a refrigerator that required no electricity and had no moving parts.
http://phys.org/news141581384.html

Einstein-Szilard refrigerator – ABSORPTION REFRIGERATION
http://geoheat.oit.edu/pdf/tp51.pdf

Einstein fridge design can help global cooling
Scientists relaunch a 1930 invention that uses no electricity and would reduce greenhouse gases

TIME’s picks for the top innovations of 2008: Einstein’s Fridge

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