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Automobile refrigerant, also known as "automotive refrigerant" or "automotive refrigerant", is actually R134A refrigerant, and automotive refrigerant is generally packaged in small cans, generally 220g, 250g, 300g. Generally, the price of a can ranges from 10 to 30 yuan, depending on the brand and how much it is filled. If the car air conditioner is not refrigerated, if you have relevant experience, you can directly buy 2-3 cans online and add them yourself.
If you have no experience, remember not to do it yourself, just find a professional car repair shop to add it. It will be slightly more expensive. At present, Beijing uses more Kulibao brand car refrigerants.
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At present, the common models of automotive air conditioning refrigerants on the market: R134A, R22, R404A, R407C Packaging specifications: 300g, 10kg and other R134A refrigerants.
R134A is currently internationally recognized as one of the main refrigeration fluids to replace R12, and is commonly used in automotive air conditioning, commercial and industrial refrigeration systems, as well as as a foaming agent in the production of hard plastic insulation materials, and can also be used to formulate other refrigerant mixtures, such as R404A and R407C. Main uses: Mainly replace R12 as a refrigerant, and is widely used in automotive air conditioning and refrigerator refrigeration.
Physicochemical properties of R407C refrigerant: At room temperature and pressure, R407C is a chlorine-free fluoroalkane azeotropic mixed refrigerant, colorless gas, which is compressed liquefied gas stored in cylinders. Its ODP is 0, so R407C is an environmentally friendly refrigerant that does not destroy the ozone layer of the atmosphere.
Main use: R407C is mainly used to replace R22, which has the characteristics of clean, low toxicity, non-combustibility, and good refrigeration effect, and is widely used in household air conditioners and small and medium-sized air conditioners.
Physicochemical characteristics of R404A refrigerant: R404A shall not be a non-azeotropic mixed refrigerant without chlorine, it is a colorless gas at room temperature and pressure, and it is a compressed liquefied gas stored in the cylinder. Its ODP is 0, so R404A is an environmentally friendly refrigerant that does not destroy the ozone layer in the atmosphere.
Main uses: R404A is mainly used to replace R22 and R502, with the characteristics of clean, low toxicity, non-flammability, good refrigeration effect, etc., and is widely used in medium and low temperature freezing systems.
Warm reminder: At present, the imported automobile air conditioning device is mostly with 134A refrigerant, and the 134A refrigerant on the market is more expensive than R12, so some people install air conditioners in the car to supplement the refrigerant in order to save a few money or greedy for convenience, the 134A air conditioning system is changed to fill with R12 refrigerant, although the same can send out cold air, but it will damage the compressor.
After 2002, the production of automobiles, the air conditioning system is designed for 134A, if you add R12, R22 and other refrigerants, long-term use, it will produce leakage, resulting in poor refrigeration effect of car air conditioning, serious, will cause irreparable damage to the entire car air conditioning system. Therefore, when consumers choose automotive air conditioning refrigerants, they must carefully distinguish and choose large manufacturers and trustworthy brands.
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Automobile refrigerant: The refrigerant in the automobile air conditioning system, commonly known as refrigerant, is used to transfer heat due to its rapid heat absorption and heat release characteristics during refrigeration work, so as to achieve the effect of rapid refrigeration.
The English name of the refrigerant is Refrigerant, so the first letter R is often used to represent the refrigerant, followed by the name of the refrigerant, such as R12, R22, R134A, etc.
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At present, the refrigerants used in automobile air conditioners are R-12, R-134A, R-407C, R-404A, R-22, R-410A.
R-12 refrigerant has been phased out;
R-134A refrigerant is currently widely used in the market;
R-404A refrigerant is mainly used in refrigerated truck refrigeration systems, but if it is a one-to-two unit (freezer plus air conditioner), the refrigerant needs to be used;
R-407C refrigerant is currently the first choice for pure electric air conditioning and heating bus air conditioners, and has been widely used in recent years;
R-22 refrigerant is only used in China by Carrier bus air conditioners, and the current market stock is not much;
R-410A refrigerant is a small batch trial by some manufacturers in order to make the unit lighter, smaller and more energy-saving;
There are also other refrigerants recommended to us by some manufacturers that are not universal, and are only used in experiments.
The above are several refrigerants that I have used in automotive refrigeration services for decades. In the future, there will be refrigerants that can better meet the needs of environmental protection to replace them.
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Hello, hello friend, there are two kinds of refrigerants for automobile air conditioners: R12 and R134A. R12 is a refrigerant belonging to the Frion system, which will seriously damage the atmospheric ozone layer and cause serious environmental problems, and has been banned by various countries, instead of which the boiling point is lower than R12, the latent heat of evaporation is also greater than R12, and the heat transfer is better than R12, but the tube pressure is high, the temperature and load are large. After replacing R12 with R134A, the input power and cooling capacity of the air conditioning system increase at the same time, and the volume of the air conditioning unit is smaller than that of R12, which is an ideal R12.
Hope mine is helpful to you,.
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In the past, most of the F12 products were used in both household air conditioners and automotive air conditioners and industrial refrigeration, and under the constraints of the Protocol, China promised to phase out F12 products step by step, among which the replacement of automotive refrigerants was until the end of 2010. This is divided into several steps, first of all, from January 1, 2002, all offline car air conditioning systems are using 134A system, that is to say, since 2002, all car air conditioning systems can no longer use F12 products, otherwise there is a huge harm to the car air conditioning system. The main 134A** business in China is Jincold, and 80% of the automobile factories are equipped by their original factories.
First of all, it is necessary to determine whether there is any remaining refrigerant in the system, and if not, it is necessary to vacuum it from the new system and detect leaks. Vacuum must be evacuated at the same time as the high and low pressure interface, if there is still residual refrigerant in the system, it is necessary to eliminate whether there is leakage, the leakage point of the general automobile air conditioner is mostly at the interface and the rubber and aluminum tube pressure joint, with nitrogen pressure and soapy water can be found, the sealing rubber ring of the interface can be solved, pay attention to the type of refrigerant and the corresponding sealing ring when replacing, generally speaking, the automobile refrigeration system can not be completely sealed, under normal circumstances, the refrigerant will generally leak about 3 years, and the refrigerant can be added after the above problems are eliminated. When adding refrigerant, run the engine, turn on the air conditioner, add refrigerant from the low-pressure interface of the system, and check the leak again after adding. If the refrigerant is added after vacuuming, the compressor of some air conditioning systems will not run in the state of no refrigerant, and the compressor will run when the refrigerant is added to a certain Chengdu, which should be paid attention to in maintenance
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Your master is right, if the refrigerant is added, the return pressure will rise, but when judging, it is generally not judged according to the gauge pressure, when the ambient temperature is 30 degrees in summer, the gauge pressure is generally 5kg, add 2 taels of R22, the system pressure will not change much, but it is more obvious in the place of the return pipe, and there will be a little condensation at normal times, and if you add more, it will be iced. If the fluorine is poor, the return pipe will not freeze, but the high-pressure connecting pipe will freeze. Haha, let's experience it carefully in maintenance! >>>More
It will produce phosgene, which is very nasal and poisonous.
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