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Air conditioning for the future using carbon dioxide
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Air conditioning for the future using carbon dioxide
Air conditioning has become a major application of refrigeration, though refrigeration is only one aspect of the complex technology associated with air conditioning. The vast majority of air conditioning applications use halocarbon refrigerants because their properties are very suitable and appropriate equipment is readily available at competitive prices. Carbon dioxide (R744)has not been used as a refrigerant for air conditioning since about the third decade of the twentieth century. It was completely superseded in this application by halocarbon refrigerants because it was less convenient to use and it also produced lower efficiencies.
This paper will show that equipment and methods developed since the 1930s now allow the use of carbon dioxide for refrigeration and air conditioning in ways which are at least as safe, reliable and efficient as the methods currently being applied with halocarbon refrigerants.
