While standing on a foggy train platform in Pittsburgh, William Haviland Carrier was struck with the genius realization that he could dry air by passing it through water, using the spray as a condensing surface. Soon afterwards, Carrier conceived the idea of adjusting humidity by heating the spray water itself and controlling the dew point temperature of the air leaving the conditioning machine. With this, came “dew point control” which, an early company brochure announced, was “the greatest single factor in modern air conditioning.”
The “Apparatus for Treating Air,” which was granted U.S. Patent# 808897 in 1906, was the first of several patents awarded to Willis Haviland Carrier. The air conditioning device would historically impact factory productivity, building design, population trends, and, ultimately, the growth of U.S. Sunbelt cities, like Atlanta and Houston. [Read more...]


By Mary Catherine O’Connor, April 11, 2013, 3:00 AM PDT 

