The air conditioner.
Willis Carrier invented a mechanical system to condition the air in Syracuse, New York, in 1902. He was a 25-year-old engineer who was called to solve a problem at the textile company Sackett-Wilhelms Lithography and Publishing Co. In wet and hot days the paper absorbed humidity and this dilated the paper, so the colored lines weren’t aligned with those painted in cold and dry days in winter. Willis knew laws of Physics; he thought about taking the humidity out of the factory by decreasing the air temperature with pipes artificially cooled, this was the first process like an air conditioner.
The air conditioner is a way in which the humans can adapt themselves to the environment; it shows as the human being can make good things for everyone. In fact, it is a machine used everywhere and wherever you go. The thermal comfort is the most important sensation preferred by people. Another essential characteristic provided by air conditioning is food conservation. The global population increases everyday, so that it’s necessary more food and, consequently, it needs to store it properly as well.
Thermal machines release an exorbitant quantity of heat by system of heat exchanging. Therefore, systems of air conditioning bring many problems to society, like the employment of energy and the efficiency loss. Few years ago systems of air conditioner released Chlorofluorocarbon, which damaged the ozone layer. However, fortunately nowadays, this gas cannot be released anymore, an international law prohibited it.
According to ideas above, this invention is very important for society and economy, but we have to prepare ourselves for fast changes soon, adaptation and mitigation are necessary because the great use of energy becomes more and more dangerous for Earth life. In my hometown, Fortaleza, I needed this invention so much because there it is very hot and for people to work indoors , air conditioners must be turned on.
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