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Ferdinand's brother developed the first absorption refrigerator in 1850. Ferdinand continued his brother's work and used water as the absorbent and ammonia as the refrigerant instead of sulphuric acid.
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In 1862, Alexander Carnegie Kirk invented a way to keep foods and drinks on ships cold. This product provided chilling and was very much like an air conditioner.
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By this time, America was a recognized leader in refrigeration throughout the world. At the time, the only group suitable for refrigerator engineers was ASME (American Society of Mechanical Engineers) so people decided to make a group more specific to their field.
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Before this event, refrigerators were large boxes and weren't very mobile or convenient. Edmund Copeland and Harry Edwards released a smaller, more convenient version of one of nation's best sellers and made a huge impact on the history of refrigerators.
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In 1923, refrigerators were a top seller due to their steady improvements and everyday general use. Kelvinator was a dominating brand which covered 4/5 of the refrigerator market.
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Refrigerators had always made life easier for many people but not everyone had them. By 1955, however, more than half of the nation had at least one refrigerator in their house.
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By 2005, basically the entire country owned a refrigerator. The product made life so much easier for so many people so it slowly became a household necessity.