Editing Einstein refrigerator (section)

{{Short description|Absorption refrigerator invented in 1930}}
{{Thermodynamics sidebar|cTopic=Processes and Cycles}}
[[File:Einstein Refrigerator.png|thumb|200px|Einstein's and Szilárd's patent application]]
[[File:Einstein Refrigerator pat1781541 clarified.jpg|thumb|200px|Annotated patent drawing]]

The '''Einstein–Szilard''' or '''Einstein refrigerator''' is an [[absorption refrigerator]] which has no [[moving parts]], operates at constant [[pressure]], and requires only a [[heat|heat source]] to operate. It was jointly invented in 1926 by [[Albert Einstein]] and his former student [[Leó Szilárd]], who [[patent]]ed it in the U.S. on November 11, 1930 ({{US patent|1,781,541}}). The three working fluids in this design are [[water]], [[ammonia]], and [[butane]].<ref name=go>{{cite news |title=Einstein's Refrigerator Using No Electricity/No Freon Revived at Oxford |url=https://www.greenoptimistic.com/einstein-refrigerator/ |date=6 February 2015 |publisher=The Green Optimistic}}</ref> The Einstein refrigerator is a development of the original three-fluid patent by the Swedish inventors [[Baltzar von Platen (inventor)|Baltzar von Platen]] and [[Carl Munters]].