Can R134a refrigerant replace R406?

Refrigerant R134AIt can be replaced with R406.

Such as ammonia and water, lithium bromide (molecular formula: Libr. white cubic crystalline crystalline or granular powder, highly soluble in water) and water, etc.; Steam jet chillers use water as a refrigerant. The main technical indicators of refrigerants are saturated vapor pressure and specific heat.

Viscosity, thermal conductivity.

surface tension, etc. After 1960, a large number of experimental studies were carried out on the application of azeotropic mixed working fluids.

It has been used for aspects such as the liquefaction and separation of natural gas. The application of non-azeotropic mixed working fluid single-stage compression can obtain very low evaporation temperatures, and can increase the cooling capacity and reduce power consumption. Its properties are directly related to the refrigeration effect, economy, safety and operation management of refrigeration equipment, so the understanding of refrigerant property requirements cannot be ignored.

How it works:

The working fluid that completes the thermodynamic cycle in the chiller. It draws the heat of the cooled object at a low temperature and then transfers it to the cooling water at a higher temperature.

or air. In vapor compression refrigerators, a working fluid that can be liquefied at room or low temperature is used as a refrigerant, such as freon.

Saturated hydrocarbons.

fluorine, chlorine, bromine derivatives).

Azeotropic mixed working fluid (an azeotropic solution made by mixing two freons in a certain ratio), hydrocarbons (propane.

ethylene, etc.), ammonia, etc.; In gas compression chillers, gaseous refrigerants such as air, hydrogen, helium, etc., are used, which are always gaseous in the refrigeration cycle; In absorption refrigerators, a binary solution consisting of an absorbent and a refrigerant is used as the working fluid.

The refrigerant R134A can be replaced with R406.

1, r406, Chinese name: dichlorodifluoromethane, Freon 12. It is a colorless gas at room temperature, and is an easy-to-use and safe refrigerant, which is widely used in various refrigeration systems.

Due to the damage to the ozone layer and the greenhouse effect, R406 has been banned internationally and nationally as a refrigerant substance.

2. The oxygen layer of R1R406 is damaged and there is a greenhouse effect, so in developed countries and some developing countries, the initial installation of new air conditioning and refrigeration equipment or the readdition of old equipment have been stopped; In 2007, China stopped the production of R406 and the initial installation of new refrigeration and air conditioning equipment. R1R406 is a refrigerant substance that is banned internationally and nationally.

1. In fact, R134A itself is an HFC refrigerant that replaces R12.

It is generally recommended to use 404a, 407c, 410a, which can be directly replaced in fixed equipment. 2. If you want to replace R134A refrigerant, you still need to replace the refrigeration oil with 12 refrigerant oil to replace other types, otherwise it is easy to damage the compressor. 3. Because there will be some subtle differences in the effects of different refrigerants, it is not recommended to directly replace the same type.

Suggested Use:

1. Because the compressor oil used in different refrigerants is also different, the compressor oil and the compressor sealing ring.

It only causes the marked refrigerant, so it cannot be replaced at will in the daily use process, nor can it be mixed at will, which can easily lead to congestion in the positive cooling pipe or compressor jamming.

2. If you want to replace the refrigerant, you must change to the compressor that is adaptable, and it should also be noted that the cleanliness of the pipeline must be ensured when the refrigerant is added for the second time, and it can only be carried out under the operation of professionals, so that it can be better solved.

3. According to different types of compressors, the suitable refrigerant can be selected for secondary addition, so that the compressor can run normally, and it will not reduce the service life of the compressor, otherwise it is likely to cause damage to the compressor.

Summary. Hello dear, R134, R406A used lubricating oil is different in principle, can not be replaced, because the refrigerant and oil mismist pipeline in the oil can not be brought back to the compressor, the compressor oil life is not long. However, the refrigerant from the new press can be used to flush the pipes for later use.

R406A mixed refrigerant is a mixture of HCFC-22, HCFC-142B and R-600A, which is a colorless gas at room temperature and a colorless transparent liquid under its own pressure, which is a substitute for R500 and R12, and is better than R12 in terms of environmental protection, energy saving and refrigeration volume, and can directly replace R12, but the power consumption will increase by 18%.

R134 refrigerant, as an alternative to R12, has many characteristics similar to R12, R134A has very low toxicity, is non-flammable in the air, and has a safety category of A1, which is a very safe refrigerant. I hope it can help you.

Is it okay to replace the refrigerant R404A with R134?

Hello dear, R134, R406A used lubricating oil is different in principle can not be replaced, Hongzhi because the refrigerant and oil are not miscible in the pipeline of the oil can not be brought back to the compressor, the compressor oil life is not long. However, the refrigerant from the new press can be used to flush the pipes for later use. R406A mixed refrigerant is a mixture of HCFC-22, HCFC-142B and R-600A, which is a colorless gas at room temperature and a colorless transparent liquid under its own pressure, which is a substitute for R500 and R12, and is better than R12 in terms of environmental protection, energy saving and refrigeration volume, and can directly replace R12, but the power consumption will increase the dust flush by 18%.

R134 refrigerant, as an alternative to R12 refrigerant, has many characteristics similar to R12, R134A has very low toxicity, is non-flammable in the air, and has a safety category of A1, which is a very safe refrigerant. I hope it can help you.

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Mainly used as an environmentally friendly alternative to R12, it is widely used in refrigeration and air conditioning systems such as automotive air conditioners, refrigerators, air conditioners, and commercial refrigeration; It can also be used as an aerosol propellant, flame retardant and foaming agent for pharmaceutical, pesticide, cosmetics, cleaning and other products. In addition, R134A is also a raw material for the formulation of some azeotropic refrigerant mixtures (such as R404A, etc.).

<> Difference between R410A refrigerant and R32 refrigerant::

Thermal properties: the charging capacity of R32 is less, only times that of R410A, the working pressure of R32 system is higher than that of R410A, but the maximum increase is not exceeded, which is equivalent to the pressure requirements of R410A system, and the discharge temperature of R32 system is higher than that of R410A, and the existing compressor needs to be redesigned.

Environmental protection characteristics: ODP (ozone depletion potential) is 0, but the GWP value (global warming potential) of R32 refrigerant is moderate, and the proportion of CO2 emission reduction can be reached compared with R22, while R410A is only, which is significantly better than R410A refrigerant in terms of CO2 emission reduction.

Safety: R32 and R410A refrigerants are non-toxic, while R32 is flammable, but among several substitutes for R22, R32, R290, R161 and R1234YF, R32 has the highest lower combustion limit LFL (lower ignition limit), the least flammable and relatively safe; Comparatively speaking, the performance of the R410A is more stable. R32 is flammable and explosive, and belongs to the current immature refrigerant type, although the damage to the atmospheric ozone layer is less, but after all, the safety has not been effectively verified.

Cycle performance: In terms of theoretical cycle performance, the cooling capacity of the R32 system is higher than that of R410A, the power consumption is increased, and the comprehensive energy saving is increased, and the experimental results also show that the refrigeration system using R32 has a slightly higher energy efficiency ratio than that of R410A. All things considered, R32 has great potential to replace R410A.

1. Different uses.

R134A is mainly used in most applications where R12 refrigerants are used.

Including refrigerators, freezers, water dispensers, automobile air conditioners, air conditioners, dehumidifiers, cold storage, commercial refrigeration, chillers, ice cream machines, refrigeration and condensing units and other refrigeration equipment, but also can be used in aerosol propellants, medical aerosols, insecticide propellants, polymer (plastic) physical foaming agents, and magnesium alloy shielding gases.

R404A is often used in cold storage, food freezing equipment, marine refrigeration equipment, industrial cryogenic refrigeration, commercial low-temperature refrigeration, transportation refrigeration equipment (refrigerated trucks, etc.), refrigeration condensing units, supermarket display cabinets and other refrigeration equipment.

2. The physical properties are different.

r134a：

Boiling point (:critical temperature :

Critical pressure kpa:

r404a：

Boiling point (,c):

Critical temperature :

Critical pressure kpa:

The difference between refrigerated 404A and R134:

The compressor of R134A refrigerant can be completely replaced with 404A.

The current is about 30% lower than the original, the refrigeration effect is worse (about 2 degrees higher), and the compressor temperature is lower than the original (the pressure is low, the natural heating is also low, and the temperature of the compressor with R134 injection is generally hot).

Refrigerant 404A is: isobutane (R600A) (CH3) 2CH-CH3, which can replace R134.

R-134A (designation: R134A).

Molecular Formula : CH2FCF3 (tetrafluoroethane), Molecular Weight:

Boiling point : Freezing point : Critical temperature : Critical pressure: 4067kpa

Saturated liquid density: 25,3, liquid specific heat: 25, solubility (water, 25), critical density:

Ozone depletion potential (ODP) 0, global warming coefficient (GWP).

Evaporation potential at boiling point: 215 kJ kg

Quality index : Purity moisture ppm, acidity ppm, evaporation residue ppm

R134A is an alternative refrigerant to R12 and has many properties similar to R12.

R134A is a very safe refrigerant with very low toxicity, non-flammable in the air and a safety category of A1.

R134A has good chemical stability, but because it has higher water solubility than R22, it is not good for the refrigeration system, even if a small amount of water exists, under the action of lubricating oil, etc., acid, carbon dioxide or carbon monoxide will be generated, which will corrode the metal, or produce a "copper plating" effect, so R134A has higher requirements for the drying and cleaning of the system. R134A has no mutual chemical reaction on steel, iron, copper, aluminum and other metals, and only has a slight effect on zinc.

R134A is internationally recognized as one of the main refrigeration fluids to replace CFC-12 at the time of writing, and is commonly used in automotive air conditioning, commercial and industrial refrigeration systems, as well as as a blowing agent in the production of hard plastic insulation, and can also be used to formulate other mixed refrigerants, such as R 404A and R 407C.

134a404a They have different boiling points! Replace 404a with 134a, as long as the pressure control is right! There will be no abnormalities!

R-134A refrigerant, alias R134A, HFC134A, HFC-134A, Tetrafluoroethane, trade names are Suva 134A, Genetron 134A, Klea 134A, etc., Chinese name tetrafluoroethane, English name 1,1,1,2-tetrafluoroethane, chemical name 1,1,1,2-tetrafluoroethane, chemical formula CH2FCF3.

Because R-134A belongs to HFC substances (non-ODS substances Ozone-Depleting Substances) - so it does not destroy the ozone layer at all, it is an environmentally friendly refrigerant recognized and recommended by most countries in the world, and it is also the mainstream environmentally friendly refrigerant, which is widely used in the initial installation and maintenance process of new refrigeration and air conditioning equipment.

R134A, as the most widely used environmentally friendly refrigerant for medium and low temperature colasers, makes it a very effective and safe alternative to CFC-12 due to the good comprehensive properties of HFC-134A, which is mainly used in most fields where R12 refrigerant is used. Including: refrigerators, freezers, water dispensers, automotive air conditioners, air conditioners, dehumidifiers, cold storage, commercial refrigeration, chillers, ice cream machines, refrigeration condensing units and other refrigeration equipment.

At the same time, it can also be used in aerosol propellants, medical aerosols, insecticide propellants, polymer (plastic) physical foaming agents, and magnesium alloy shielding gases.

CRR intercooled warm reminder: now there are many counterfeiting methods that are difficult to prevent, everyone must not be greedy for the vertical picture of the stove small cheap, must buy a well-known big brand, in order to avoid potential inferior refrigerant contact with the compressor and then damage the compressor.