/kloc-in the 9th century, Michael Faraday, a British scientist and inventor, discovered that compressing and liquefying a certain gas could freeze the air. When liquid ammonia evaporated, his idea was still theoretical.
1842, a new building built by John Gorrie, a Florida doctor, installed central air conditioning. Alfred Wolff, an engineer in hoboken, New Jersey, helped design this brand-new air conditioning system and transferred this technology from textile mills to commercial buildings. He is regarded as one of the pioneers in reducing the temperature of the working environment.
In the late period of 1902, Willis Carrier (1876-1950) invented the first modern electric air conditioning system. The difference between its design and Wolff's design is that it can not only control the temperature, but also control the humidity of the air, so as to improve the quality of the production process of a printing factory in Bukling, new york. This technology provides a low-heat and low-humidity environment, which makes the paper area and ink arrangement more accurate. Later, Carrier's technology began to be used in the workplace to improve production efficiency. 19 15 set up Carrier Engineering Company to meet the surge in demand. With the gradual development, air conditioning has been used to improve the comfort of home and car. The sales of residential air-conditioning system didn't really take off until 1950' s. The Royal Victoria Hospital in Belfast, Northern Ireland was built in 1906, which is of special significance in architectural engineering and is known as the first air-conditioning building in the world.
1906, Stuart W. Cramer of Charlotte, North Carolina, USA, was looking for ways to increase the air humidity in his southern textile factory. Kramer named this technology air conditioning, and used it as a substitute for air conditioning in the same year. The regulation of water was a famous procedure at that time, which made the production of textiles easier. He combined steam with ventilation system to "adjust" and change the air in the factory and control the extremely important air humidity in the textile mill. Willis Carrier used this name and wrote it into the company name founded by 1907: "Galia Air Conditioning Company of America" (now Carrier Company).
19 15, Carrier established its company, and it is still one of the largest air conditioning companies in the world. But in the 20 years after the invention of air conditioning, it has always been a machine, not a person. Until 1924, in a shopping mall in Detroit, many people often fainted because of the sultry weather. Three central air conditioners were first installed, which was a great success. The cool environment has greatly increased people's desire for consumption. Since then, air conditioning has become a powerful tool for merchants to attract customers, and the era of air conditioning serving people has officially arrived.