11th Day of November

1930 – Patent is awarded for the Einstein refrigerator

The Einstein–Szilard or Einstein refrigerator is an absorption refrigerator which has no moving parts, operates at constant pressure, and requires only a heat source to operate.

It was jointly invented in 1926 by Albert Einstein and his former student Leó Szilárd, who patented it in the U.S. on November 11th, 1930.

1930 – Patent is awarded for the Einstein refrigerator
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From 1926 until 1934 Einstein and Szilárd collaborated on ways to improve home refrigeration technology. The two were motivated by contemporary newspaper reports of a Berlin family who had been killed when a seal in their refrigerator failed and leaked toxic fumes into their home.

The Einstein refrigerator is a development of the original three-fluid patent by the Swedish inventors, the three working fluids in this design are water, ammonia and butane.

Extra Note: The refrigerator was not immediately put into commercial production; the most promising of their patents being quickly bought up by the Swedish company Electrolux.

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https://en.wikipedia.org/wiki/Einstein_refrigerator

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