A cooler is an accessory that keeps the drinks and food at the desired temperature. Although this term is used in England to describe the mobile media coolers, it also relates to what we give the name of a refrigerator. Let us try to understand a little more of the history of this very vital tool in our lives.
Jacob Perkins (1766-1849) was the physical American whose scientific experiments have proved the compressibility of water. This discovery was of great importance, since the cooling works from the principle of compressibility of a liquid. This is a rapid evaporation and the subsequent loss of energy that it generates. That is, when a liquid evaporates quickly, the container that holds suffers an inevitable cooling, because the steam can take much of the energy.
At the beginning of the nineteenth century, Oliver Evans prepared the first draft of a machine for cooling; however this was never put into practice. Some time later, Evans returned to prepare a project, this time taking into account the principle of compressibility, and obtained the first patent for a machine of this type.
Already with regard to domestic refrigeration (refrigerator), the first machine to appear was in the year of 1913, in Chicago, and was called Dolmere (Domestic Electric Refrigerator). It was not a commercial success, unlike what happened with Kelvin refrigerators, which would be produced some years later.
However, the first refrigerator to have worldwide success was built by General Electric in 1927, having been produced on a large scale (over one million units), of which some copies still in operation today.
The year of 1928 is considered a landmark in the history of refrigeration, as it was then that the American engineer Thomas Midgley developed the chlorofluorocarbons (CFCs), who came to replace the toxic gas refrigerants that until then had been used.
Later in 1973, the American Chemicals Frank Sherwood Rowland and Mario Molina realized the harmful effect of chlorofluorocarbons (CFCs) in the ozone layer, which resulted, through the Montreal Protocol, the revocation of their production by large countries. Currently, some states still produce CFCs, but are committed to full suspension of the substance until 2010.
When you will buy a refrigerator takes this into account. The fight against global warming earth is a struggle that must be fought by every one of us. Preserve the environment, do your part.