Air Conditioning - From The First Patent To Modern Methods

Humans have at all times wanted creature comfort from heating their cave to storing

food intended for later consumption and lots of of their finds for the home started as processes for business or industry. In 1851, Dr. John Gorrie used compressed ammonia to make what his patent application called an icemaker. It was used to cool the patients' accommodation and despite his ambitions of whole-house air conditioning, he lacked the financial capital and his invention stayed in the planning stages.

It took approximately fifty years before the first commercial application of air conditioning cooled air for industrial processing, thanks to the creation of Willis Carrier. Stuart Cramer, operating a cloth mill in South Carolina found a technique to add moisture to the air, making fabrics easier to work with while cooling the location, and used the term air conditioning in his submission for the patent.

The initial methods of air conditioning used compressed gases such as ammonia, methyl chloride and propane, but the risk they presented led to the use of chlorofluorocarbon and in 1928 under the trade name of Freon, was discovered to be safe for man and machine. However, it was found harmful to the atmosphere and was replaced by hydrofluorocarbons, which proved safer, however even newer gases that are ozone friendly is taking their place and by 2010, all new products will contain Puron.

During the 1950's air conditioning use expanded into home and automobiles, improving individual space and helped in the growth of superior, deep-well buildings. Developing central air conditioning systems that despatched cooled air through ductwork enabled wider house construction. Up to that time, the structures had to be thin enough to allow for proper air circulation right through the entire building.

It has also been found, and disputed, that human productivity improves in places where more comfortable temperatures are maintained. Studies have professed that the most efficiency happens within a room temperature of 72-degrees, and diminishes one percent for every two-degree temperature increase. Many say this is a effect of an air conditioning salesman's pitch and dispute the theory. Whilst other are sure the study performed in the Hawthorne Works, a factory in the early 1930's, indicates the relationship between environmental temperature and productivity.

From the days of using towers of water and windmills to speed evaporation, controlling the interior surroundings has found it way into the air conditioning processes available today. From cooling small rooms to entire structures, people have discovered another technique to enhance their creature comfort.

by: Carol Bell

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