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       For refrigeration equipment, the purity of refrigerants has a significant impact. Low purity or inferior refrigerants cannot achieve the desired cooling effect. Currently, there are many types of refrigerants on the market, and when choosing, people are foolishly unable to distinguish which one they want. When choosing, everyone must pay attention to the imperfect sales channels of mixed fish and dragon on the market, which not only affects the efficiency of refrigeration systems, It has also harmed the interests of many consumers. How can inferior refrigerants be distinguished?

       1. Connect the pressure gauge for testing. If the measured pressure value is lower than the corresponding saturation pressure value at the ambient temperature by more than 2kg/f, it can be determined that this refrigerant is unqualified and strictly prohibited from use! For example, if the ambient temperature is 20 degrees and the measured pressure value is 7.1kg/f, which is much lower than the saturation pressure value of 13.5kg/f that the refrigerant should reach at this temperature, it can be determined that this refrigerant is an unqualified product.

       2. Foam detection method, foam detection method is effective for refrigerants containing corrosive gases such as monochloromethane, and the corrosion degree of foam is related to the content of monochloromethane. The higher the content, the more obvious the effect is. The lower the content, the less obvious the effect is. The specific operations are as follows:

       3. Invert the refrigerant tank and release a small amount of refrigerant onto a piece of white paper. If there are obvious impurities or liquid water on the white paper, it indicates poor refrigerant quality and is not recommended for use. In addition, refrigerants that can be purchased through legitimate channels, such as refrigerants priced significantly lower than the market price, should be highly vigilant.

       4. If you have testing conditions, it is recommended to test the purity and acidity of the refrigerant before using it. Refrigerants with significantly lower testing results than industry standards are not recommended for use. Note: The purity of qualified refrigerants should be greater than 99% (the purity of high-quality refrigerants should be greater than 99.8%), and the acidity should be less than 0.0001.

       5. During the system debugging and operation phase, no other abnormalities were found after inspection, and the cooling capacity was insufficient; The dryer or expansion valve is blocked, and the blockage is a yellow brown wax or black oil sludge like foreign object. It is recommended to extract refrigerant from the system for purity testing to identify the risk of poor quality refrigerant.

Hazards of poor quality refrigerants

       1. Counterfeit refrigerants are often products of small workshops, and all indicators cannot meet the requirements. Excessive acidic and sulfur ions can accelerate the corrosion of refrigeration equipment, and if aluminum pipes are used, the corrosion rate will be very fast.

       2. The formula proportion is not accurate and there is no precision to speak of. It can cause unnecessary working load and damage to various components of the compressor.

       3. The refrigerant is not fully used, causing some harmful gases to flow into the refrigeration system, and the consequences can be quite serious.

       4. The excessive fluorine content in the refrigerant can cause leakage and pose a significant threat to the ozone layer, which is essential for human survival.

       5. Parts with uneven quality levels are mixed with combustible gases, which can easily lead to fire and explosion accidents.

       The improvement of living standards has also made our lives better and better, and the popularization of refrigeration equipment also consumes a large amount of energy. In summary, when choosing high-purity refrigerants, everyone should purchase refrigerants produced and sold by legitimate manufacturers through channels. If the price is lower than the market average price, be careful. If conditions permit, it is recommended that everyone inspect the purity and acidity before use.