What kinds of refrigerants are there? How to distinguish them?

A few years ago, most of the refrigerants used in refrigerators were Freon, but because excessive use of Freon would destroy the atmosphere, gradually refrigerator refrigerants have been replaced by other substances. There is more than just Freon as the refrigerant in Wuhan, and of course it is not only the refrigerant that needs to be used in refrigerators. What kinds of refrigerants are there? Let's take a look now.

There are several kinds of refrigerants. From the point of view of chemical composition, there are inorganic compound refrigerants, halocarbon refrigerants, hydrocarbon refrigerants, and azeotropic mixtures. The refrigerant. Inorganic compound refrigerants were the first to appear and were once widely used. Typical inorganic compound refrigerants include sulfur dioxide and nitrogen dioxide. International regulations and other inorganic compound refrigerant codes are four digits, the first digit is the letter R, the second digit is the number 7, and the difference is the last two digits.

Among halocarbon refrigerants, Freon is the most typical representative, and it was once widely used as a refrigerator refrigerant. The typical representative of hydrocarbon refrigerants is methane, and ethane, propane, etc. are also hydrocarbon refrigerants. Since hydrocarbon refrigerants are easy to burn and explode, they have a low safety factor and are generally not recommended. The azeotropic mixture refrigerant is a mixture of several different refrigerants. Compared with a single refrigerant, the refrigeration characteristics are improved.

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