Around 1000 BC, the Persians had invented an ancient air-conditioning system that used wind poles installed on the roof to pass through the cold water and blow into the room with natural wind from the outside, making the people inside feel cool.
In the 19th century, British scientist and inventor Michael Faraday (Michael Faraday) discovered that compressing and liquefying a certain gas can freeze air. This phenomenon occurs when the liquefied ammonia vapor evaporates. At that time, the idea was still theoretical.
In 1906, Stuart W. Cramer of Charlotte, North Carolina, USA was looking for ways to increase the air humidity in his southern textile mill. Cramer named the technology air conditioning and used it in a patent application in the same year as a substitute for water conditioning.
In 1915, Carrier established a company, which is one of the largest air-conditioning companies in the world. But 20 years after the invention of the air conditioner, machines have always been enjoyed, not people.
Until 1924, a mall in Detroit often fainted due to the sweltering weather, and first installed three central air conditioners. This was a great success. The cool environment made people's desire for consumption greatly increased. Since then, air conditioning As a powerful tool for businesses to attract customers, the era of air conditioners serving people has officially arrived.
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