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Refrigerator Inductive On-off

Refrigerator Inductive On-off

Refrigerator Inductive On-off In the middle of the 17th century, the word "refrigerator" entered the American language. Before that, the refrigerator had just begun to affect the diet of ordinary American citizens. With the development of the city, the sale of ice has also gradually developed....

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Refrigerator Inductive On-off



In the middle of the 17th century, the word "refrigerator" entered the American language. Before that, the refrigerator had just begun to affect the diet of ordinary American citizens. With the development of the city, the sale of ice has also gradually developed. It is gradually used by hotels, hotels, hospitals and some visionary city traders to keep meat, fish and butter fresh. After the Civil War (1861-1865), ice was used to refrigerate trucks and it was also used for civilian purposes. By 1880, half of the refrigerators sold in New York, Philadelphia, and Baltimore had already been sold. One-third of refrigerators sold in Boston and Chicago began to be used in homes because of a new type of home--refrigerator--that is, modern refrigerators. Predecessor was invented. There are also freezers in the same category.
Making an efficient refrigerator is not as simple as we thought. In the early 19th century, the inventors' understanding of the thermophysical knowledge that was crucial to cold science was very shallow. It is thought that the best refrigerators should prevent the melting of ice, and such a view that was very common at the time was obviously wrong, because it was the melting of ice that played a role in cooling. Earlier, people made a lot of efforts to preserve ice, including wrapping the ice with a blanket so that ice could not play its role. It was not until the late 19th century that inventors succeeded in finding the exact balance of insulation and circulation needed for efficient refrigerators.
But as early as 1800, Thomas Morr, a talented Maryland farmer, found the right way. He owned a farm about 20 miles from Washington, where the village of Georgetown was a downtown area. When he used the refrigerator designed to deliver butter to the market, he found that customers would walk through the rapidly melting butter in the competitor's bucket and give him a fresher, harder, neatly cut price than the market price. A pound of butter. Moore said that one of the benefits of his refrigerator is that farmers do not have to go to the market for trading at night to keep their products cool.

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