Breverton's Encyclopedia of Inventions: A Compendium of Technological Leaps, Groundbreaking Discoveries and Scientific Breakthroughs that Changed the World by Breverton Terry

Author:Breverton, Terry [Breverton, Terry]
Language: eng
Format: epub, mobi
Publisher: Quercus
Published: 2012-04-25T23:00:00+00:00

Two Swedish students designed the absorption refrigerator in 1922, and it became a worldwide success, being commercialized by Electrolux. Absorption fridges are powered by a heat source that drives the cooling system. Compressor fridges use electricity. Carl von Linde’s work upon the liquefaction of air, patented in 1895, allowed the manufacture of the first practical compact fridges. By 1922, a home refrigerator cost about 50 per cent more than a Model T Ford car, and ice cube trays were being introduced into the design. The compressor assemblies on early fridges generated a great deal of heat, so were often placed on top of the unit. The introduction of Freon in the 1920s expanded the refrigerator market during the 1930s, and provided a safer, low-toxic alternative to previously used refrigerants. From the late 1920s fresh vegetables were successfully processed through freezing by the forerunner of General Foods, which had acquired the technology when it bought the rights to Clarence Birdseye’s successful fresh freezing methods. Home freezers as separate compartments (larger than those necessary just for ice cubes), or as separate units, were introduced in the United States in 1940. Frozen foods, previously a luxury item, began to become commonplace in the USA.

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