R 134 a chemical name is four fluorine ethane, it does not contain chlorine atoms, the atmospheric ozone layer can't afford to damage; Has a good safety performance, Non-flammable, does not explode, non-toxic, no stimulation without corrosion) ; R 134 a heat transfer performance of close to, so the refrigeration system retrofit is easier. R 134 a of the heat transfer performance is better than R 12, so the amount of refrigerant can be greatly reduced. Colorless gas at room temperature, under pressure from its own colorless transparent liquid, is a substitute for R12. A lot of people, like call made refrigerant R134a has a no. But in fact it is refrigerant freon HFC everything, so can't call no. Freon is derivative of the saturated hydrocarbons is replaced by halogen element, also called halogenated hydrocarbon materials. This 'hydrocarbon' take the carbon and hydrogen is the word of the half. Said hydrocarbons. The freon chlorine without hydrogen is called CFC refrigerants, as R12 ( CF2CL2) R11 (, CFCL3) And so on. These refrigerants serious effect on the destruction of the ozone layer. Called the chlorine and hydrogen freon refrigerant as, like R22 ( HCF2CL) 。 This kind of refrigerant less damage to the ozone destruction. Called freon refrigerant fluoride without chlorine HFC, like everything, CH2FCF3 formula is more, there are 5 - - - Six, not sure) 。 The refrigerant for ozone destruction, so also called environmental protection refrigerants.
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