What was the invention of air conditioning imitated?

Until 1758, British chemists and doctors John Hadley and Benjamin Franklin succeeded in making ice artificially with ether. But not long after, Hadley died, Franklin devoted himself to his political career, and the research on artificial cooling came to a standstill. Decades later, 1842, malaria and yellow fever were prevalent in Florida, USA. Dr. John Gori invented an ice-making cooling device to cool patients. A few years later, Gori got a patent. However, in addition to their huge size and low efficiency, these refrigeration devices have a big disadvantage: because ice needs to be made first and then cooled, the air temperature drops and the humidity inevitably increases.

Three-quarter scale model of Gori ice maker

With the passage of time, it may never have occurred to anyone that the problem of improving refrigeration equipment was solved by young American Guy Carrier. Willis Haviland carril loved mathematics since childhood. His mother is good at repairing clocks, sewing machines and household appliances. Little carrier is also keen on repairing and inventing. 1902, after he got a master's degree in mechanical engineering, he joined Buffalo Forge Co, a company that produces heaters, bellows and exhaust fans, and worked as a heating engineer in R&D department with a weekly salary of only 10 USD.

After helping the company solve many technical problems, Carrier took over a "troublesome" customer-Brooklyn Printing Factory. That summer, the printing quality of this factory dropped significantly. Smart carrier immediately caught the crux of the problem: the hot and humid weather that summer was the culprit! Paper deformation, ink drying and unstable temperature and humidity have become the chief culprits that affect printing quality. He found the national weather table and accurately calculated the temperature and humidity needed for printing. However, it is not difficult to cool down. How to reduce the humidity?