Automobile air conditioning refrigerant 134a.

Air conditioning is more familiar than the tone of 2 1 century, but our understanding of air conditioning is only superficial. At present, there are generally two kinds of automobile air refrigerants, one is R 12, and the other is 134 a(HFC- 134 a). R 12 has a long history and is widely used. However, chlorine molecules in the air will destroy the ozone layer in the atmosphere and affect the greenhouse effect. Therefore, a few years ago, representatives from all over the world gathered in Montreal and signed a protocol stipulating that the production and use of Sherion products should be stopped in recent years, among which R 12 was the first one. 34a is a variety that began to be used in 1990s. Because chlorine-free molecules have no damage to the ozone layer and have little change to the automobile air conditioning system, the relevant United Nations organizations recommend the use of 34a and call it&; Ldquo is in Guangdong, Hong Kong and other places. Green snow species &; Rdquo At present, the air conditioning system of many new cars at home and abroad basically uses 134a refrigerant. Let's briefly introduce how to use our car editor to view air conditioning refrigerants 134a.

Brief Introduction and Definition of Automobile Air Refrigerant 134a

R- 134 a( 1, 1, 2- ethane) is a refrigerant with good safety factor (non-flammable, non-explosive, non-toxic, non-irritating and non-corrosive) and contains no chlorine atoms. Its refrigeration capacity and efficiency are very close to R- 12 (dichloroethane, Sierra Leone), so it is used as refrigerant. R- 134a is now internationally recognized as the best environmental protection substitute for R- 12. Under the condition of not completely destroying the ozone layer, it is an environmentally friendly refrigerant recognized and recommended by most countries in the world at present, and it is also the mainstream environmentally friendly refrigerant at present. It is widely used in the initial installation and maintenance of new refrigeration air equipment, and then it is added. R 134a is extremely low in toxicity and nonflammable in air. The safety category is A 1, which is a very safe refrigerant.

Air refrigerant 134a is widely used.

R- 134a is the most widely used medium and low temperature environmental protection refrigerant. Because of its good comprehensive performance, R- 134a has become a very effective and safe substitute for R- 12, which is used in most fields where R 12 refrigerant is used. Including refrigerators, freezers, drinking fountains, automobile air switches, central air switches, dehumidifiers, cold storage, commercial refrigeration, ice water machines, ice cream machines, freezing and condensing units and other refrigeration equipment, and can also be applied to aerosol propellants, medical aerosols, insecticidal propellants and polymer (plastic) physical foaming agents. R- 134a can be widely used as refrigerants in automobile air conditioners, refrigerators, central air conditioners, commercial refrigeration and other industries, as well as refrigerants in medicine, pesticides, cosmetics and cleaning industries.

The introduction of automobile air refrigerant 134a is quite similar.

134a is opposite to R 12 air conditioning system. Their thermodynamic properties and system structure are similar, but the biggest difference is refrigeration oil. Refrigerator oil is a liquid lubricant compatible with refrigerant, which can lubricate the compressor and has stable chemical properties. R 12 refrigerator oil is mineral oil dissolved in Rl2, while 134a is a refrigerant with strong molecular polarity, which is immiscible with mineral oil, just like oil-water separation, and cannot play a lubricating role in air conditioning system. Therefore, most 134a refrigeration oils use a lubricant called PAG or ester. Because of the particularity of this lubricant, the air conditioning system of 134a has different requirements for rubber materials and its own properties from that of R 12, so 134a can only work in specially matched systems. All 134a air conditioning systems used by vehicles are basically in compressors, condensers and evaporators. Rubber tubes and filling equipment are marked with 134a to prevent misuse.

One thing our friends should pay attention to is that most refrigerant devices in automobiles use 134a refrigerant, but the price of 134a refrigerant in the market is about three times that of R 12. Therefore, in order to save a few dollars or for convenience, someone installed an air conditioner in the car to supplement the refrigerant. The automobile air conditioning system produced after 2002 was specially designed for 134a. If R 12, R22 and other refrigerants are added and used for a long time, it will cause leakage, thus affecting the cooling effect of the automobile air conditioning system, and in serious cases, it will cause irreparable damage to the whole automobile air conditioning system. Therefore, consumers must carefully distinguish when choosing refrigerants for automobile air conditioners, and it is best to choose big manufacturers and trustworthy brands. The brief introduction of automobile air refrigerant 134a shared by Bian Xiao Automobile needs to be read in depth with friends.

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