The difference between refrigerant R417a and R22

R417a is a refrigerant composed of a mixture of R125, R134a and R600. It has a boiling point of -41.8°C under a standard atmospheric pressure, while R22 is -40.8°C, the critical pressure is 615Pa, and R22 is 723.6Pa. They are basically compared. Close, is one of the alternative refrigerants of R22.

R22 is a colorless, almost odorless gas at room temperature, non-flammable, non-explosive, non-corrosive, and slightly more toxic than R12, but it is still a safe refrigerant. The safety classification is A1; it can be liquefied into a colorless and transparent liquid under pressure. R22 has high chemical and thermal stability, especially in the absence of water, it does not react with general metals below 200°C. In the presence of water, it only works slowly with alkali. However, cracking occurs at high temperatures.

R417a is miscible with existing refrigerating oil and is suitable for use in typical R22 direct expansion (DX) systems. It is very close to the operating pressure and efficiency of R22. It is a long-term solution to replace R22 without the need to modify equipment and systems. It is suitable for various air-conditioning and refrigeration units that use R22.

Currently, R417A accounts for more than 80% of the European replacement refrigerant market, and is widely used in central air-conditioning refrigerants such as shopping malls, hotels, supermarkets and office spaces. Replacement, its energy saving, environmental protection, high efficiency and simple replacement (no need to replace the compressor and expansion valve), etc., make it the first choice for Europe to replace R22. Especially the new energy-saving refrigerant of choice for air source heat pump water heaters.

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