The first known artificial refrigeration was demonstrated by William Cullen in 1748, who used a pump to create a vacuum and lower the temperature of a small amount of water.
The first practical refrigerator was invented by Jacob Perkins in 1834, using a closed cycle of compressed ether gas to produce cooling.
The first electric refrigerator was introduced in 1913 by Fred W. Wolf of the General Electric Company.
The first refrigerators for home use were introduced in the 1920s, but were not widely adopted until the 1940s.
The first refrigerator with a built-in freezer compartment was introduced in 1940 by the General Electric Company.
The first frost-free refrigerator was introduced in 1955 by General Motors' Frigidaire division.
Modern refrigerators typically use a compressor and refrigerant to transfer heat from the interior to the exterior, allowing for cooling.
Refrigerators work by removing heat from the interior and transferring it outside, using a compressor and refrigerant to circulate the cool air.
The average lifespan of a refrigerator is about 13 years, although this can vary depending on the model and maintenance.
Refrigerators can use a significant amount of energy, with some models consuming up to 10% of a household's electricity usage.
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