Einstein refrigerator
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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 invente
Annotated patent drawing Butane ammonia vapor Butane ammonia liquid Moist ammonia gas Ammonia water solution Cool ammonia depleted water Warm ammonia depleted water Cooling water
Icyball
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Icyball is a name given to two early refrigerators, one made by Australian Sir Edward Hallstrom in 1923, and the other design patented by David Forbes Keith of Toronto. Keith's design was manufactured
Einstein refrigerator
…Rudolf Goldschmidt (for the Einstein–Goldschmidt hearing aid) Icyball Timeline of low-temperature technology…
A Crosley IcyBall with cold side ball on left, hot side ball on right