Invention Of Practical Refrigeration Machine
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Invention Of Practical Refrigeration Machine
In 1834, physicist and inventor Jacob Perkins built the first practical refrigeration machine after the idea was conceived by Ollie Evans in 1805. This machine used ether as the refrigerant in a vapor-compression cycle. Being one of the first refrigerants used, dimethyl ether was highly volatile, or evaporative, relatively non-toxic and resisted autoxidation, meaning it was generally stable. However, it was phased out due to being highly flammable and sensitive to air and light, tending to form explosive peroxides. Also, ether is more dense than air meaning it can collect low to the ground and close to ignition sources. Invention Of Practical Refrigeration Machine
In 1850, Edmond Carr developed the first absorption machine, which used the exothermic reaction of water and sulfuric acid. An absorption refrigerator is a refrigerator that uses a heat source to provide the energy needed to drive the cooling process. Whilst an advantage is that sulfuric acid could be easily produced commercially by the reaction of water with sulfur trioxide, its reactivity was a major disadvantage and led to its phasing out. Sulfuric acid is a powerful oxidizing agent and reacts with many metals at high temperatures, and the very exothermic addition of water to concentrated sulfuric acid could lead to explosions.Invention Of Practical Refrigeration Machine