The Einstein refrigerator is a type of refrigerator co-invented in 1926 by Albert Einstein and former student Leó Szilárd, who were awarded U.S. Patent 1,781,541 on November 11, 1930. The machine is a single-pressure absorption refrigerator, similar in design to the gas absorption refrigerator. The refrigeration cycle uses ammonia (pressure-equalizing fluid), butane (refrigerant), and water (absorbing fluid). The Einstein refrigerator is portable, made of inexpensive, nonmoving parts, operates silently, and is very reliable. However, leaks of the ammonia caused problems among the earlier models.
Einstein undertook this invention as a way of helping along his former student. He used the knowledge he had acquired during his years at the Swiss Patent Office to get solid patents for the invention in several countries. The refrigerator was not immediately put into commercial production, but rights to use the patents were sold to companies such as Electrolux of Sweden, and the funds obtained supported Szilárd for several years. Electrolux manufactures a similar design invented by Baltzar von Platen and Carl Munters in 1926 under the brand name Dometic.
Greatest Invention ever.
Where we live (low desert) it's gaining population by leaps and bounds. I often muse that if reliable A/C hadn't come about this area would have the same population ratio as the Sahara Desert.
(Check my page - it's 8:30 am, and already 102 on my three thermos - expected to hit 116 today with a 'warmup' for the weekend...I'll likely FReep more than usual)