Scientists are working to make the dream of Albert Einstein come true. They are working on a project that had been commenced by Albert Einstein to develop an environmentally friendly fridge. Refrigeration equipment is known to cause the maximum damage to environment.The Einstein Refrigerator is an absorption-type refrigerator which has no moving parts and requires only a heat source to operate. It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd and patented in the US on November 11, 1930.
An engineer called Malcolm McCulloch is working on the three year project. A prototype had been patented by Einstein as early as 1930. It used pressurized gases to keep things cool. However with the advent of compressors this technology was abandoned without considering the damage to environment.
Modern refrigerators produce freons that cause maximum damage to the environment. Einstein’s concept involves use of ammonia, butane and water. It uses the principle of liquids reaching their boiling points much earlier at lower pressure when compared to normal atmospheric pressure. There is the requirement of a heat pump in this device. Scientists are trying to develop a solar heat pump for this purpose.
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