The characteristics of freon

freon refrigerant appeared in the 1930 s, is now widely used refrigerants. Such as household refrigeration equipment, air conditioning and special of small and medium sized cryogenic equipment are corresponding freon as refrigerant. They are the common features of low toxicity, no burning, no explosion, tasteless, good chemical stability, non-corrosive effect of common metals, does not react with water. But the permeability is strong, easy to leak, density, liquidity is poor, poor heat transfer and unit volume refrigerating capacity is small, the price is higher. Used to have a wide range of freon refrigerant R12, R22, R50Z, etc. Because of freon to the atmosphere of the destruction of the ozone layer will cause the global greenhouse effect, boosting the ultraviolet (uv) radiation, affect a variety of biological survival, international has developed a series of stop spending freon law, our country also is stepping up efforts to carry out research work of CFC substitutes, there are non-fresno freezers.

a, freon R12

freon R12 is a kind of refrigerant in one of the most used. The standard evaporation temperature for R12 29. 8 ℃, freezing temperature was minus 155 ℃, using range is + 10 ~ - Temperature refrigerant in 40 ℃, belongs to the medium voltage. Small and medium sized cryogenic refrigeration equipment basically use it, such as a refrigerator, food freezer, freezer, etc. The air conditioner in R12 disabled at the moment.

R12 colorless, faint scent, harmless to the human body physiology, when it is in the air content of 20% people feel, volumetric concentration of more than 80% can make the person suffocate.

does not contain hydrogen atoms in R12, so not burning, not explode, but R12 contact with open flame and the temperature above 400 ℃, the decomposition of harmful to human body of phosgene and hydrogen fluoride, hydrogen chloride. In welding cooling system pipe, therefore, must need the refrigerant in the pipeline to rule out clean again, and to open a window ventilated.

R12 in water solubility is small, and reduce with the temperature decreasing, under low temperature, the cooling system into the water to produce acid, metal corrosion action, and prone to 'ice block' phenomenon. So, moisture content should be strictly restricted in R12 system, general provisions of R12 moisture content must not exceed o. 0025%. Refrigeration system before filling R12 must undergo strict dry processing. Not only that, in the filling line, between the cylinder or charging device and the system also should be equipped with dry filters, to prevent moisture into the system will affect the cooling performance.

at room temperature, R12 can dissolve lubricating oil. As a result, the lubricating oil in all parts of refrigeration system will produce different effects. In order to guarantee the compressor lubrication, use the high viscosity of lubricating oil. In the condenser, because R12 and lubricating oil dissolve each other, form a homogeneous solution, so will not affect the heat transfer in heat transfer surface oil film. In the evaporator, the R12 and lubricating oil into the evaporator, with the continuous evaporation of R12, essential oil also accumulate and concentration is higher and higher, thus reduce the heat transfer coefficient of the evaporator. So R12 refrigeration system use the snake tube evaporator, more from the upper for fluid, lower gas, eventually make R12 vapor return compressor with lubricating oil. In the compressor crankcase, R12 dissolved in oil, compressor stop working, the higher internal pressure, increase amount of R12 dissolved in the oil. Pressure drop inside the compressor starts, to evaporation pressure, oil of R12 evaporated, so that the crankcase oil level drops and produce a large number of bubbles, affect the pump work. Therefore, in the compressor exhaust pipe set up oil separator, in order to make into lubricating oil as far as possible in the refrigeration system.

R12 has dissolved on natural rubber, plastic and other organic material effect, easy to cause a leak seals made of these materials. System USES the corrosion resistance of NBR or chlorohydrin rubber sealing material. Closed compressor winding wire will use fluoride resistant insulating varnish.

R12 penetration ability is very strong, is easy to through the casting of loose sand holes, in combination with the gap, thread connection and leakage, and it is difficult to find. Therefore, the high tightness requirements of the system.

R12 of common metal not corrode action. But contains moisture effect on corrosion of steel are very slow.

R12 unit volume of small refrigerating effect, make the R12 compressor size is bigger than the same refrigerating effect of ammonia compressor. R12 density is big, in the refrigeration system of flow resistance and the impact on the valve plate is larger than the ammonia.

R12 prices more expensive, in the economy is a kind of ideal refrigerant enough.

2, freon R22 ( CHCIFz)

as refrigerant R22 is one of the more widely. The standard of R22 evaporating temperature is minus 40. 8 ℃, freezing temperature is 160. 0 ℃, using range is + 10 ~ - 50 ℃, temperature refrigerant in medium voltage, its unit volume refrigerating capacity about 60% higher than R12, other physical and chemical properties and R12 close, at the same cooling condition, can use smaller devices. At present, R22 is more used in household air conditioner, refrigeration equipment and so on commercial refrigeration system.

R22 colorless, tasteless, no burning explosion. But the toxicity is little older R12, still belongs to the safety of refrigerants.

than R12, R22 solubility in liquid water will appear when the 'ice block' phenomenon. For R22, water content in the system is still limited to 0. Less than 0025%, also requires installation of drying device in the system, and subject to strict before filling R22 dry processing.

Hangzhou E cool refrigeration Co.,Ltd, as well, confirms that consumers who want ethically produced goods do the work of looking for them.

If you would like to learn more about start capacitor suppliers air conditioner capacitor, and other types, please be sure to visit Arkool Refrigeration. We can offer you top quality as well as cost saving price.

High-quality products are huge boosts when it comes to marketing ideas; allowing potential manufacturers to place themselves in the shoes of a satisfied customer brings them one step closer to understanding the idea of refrigerant gas.

A wholesaler should have many start capacitor suppliers based products that could help you if you have a start capacitor suppliers problem. It is better to treat the problem early rather than have to deal with it later. Hangzhou E cool refrigeration Co.,Ltd is your best choice.

need fuel for energy,while start capacitor suppliers do not.