R22, R23, R32, R124, R125, R143, R134a, R290, R404, R410, R411, R417, R438, R507

Refrigerant, also known as refrigerant, refrigerant and snow, is a medium substance used to complete energy conversion in various heat engines. These substances usually increase their power by a reversible phase transition, such as a gas-liquid phase transition.

R717 Ammonia: Ammonia is the most widely used medium pressure and medium temperature refrigerant. The coagulation temperature of ammonia is -77.7℃, the standard evaporation temperature is -33.3℃, and the condensing pressure is generally 1.1 ~ 1.3MPa at normal temperature. Even when the cooling water is as high as 30℃ in summer, it does not exceed 1.5MPa. Mainly used in large industrial refrigeration and commercial refrigeration field.

R22 is a medium temperature refrigerant, its standard boiling point is -40.8°C, the solubility of water in R22 is very small, and it is mutually dissolved with mineral oil, R22 does not burn, nor explode, and the toxicity is very small. R22 has strong penetration ability, and the leakage is difficult to find.

R134a as an alternative refrigerant to R12, R134a has very low toxicity and is not flammable in air. Widely used in: refrigerator, freezer, water dispenser, automobile air conditioning, central air conditioning, dehumidifier, cold storage, commercial refrigeration, ice water machine, ice cream machine, freezing condensing unit and other refrigeration equipment.

R404A is a mixture of HFC125, HFC-134a and HFC-143 (mainly used to replace R22 and R502). R404a is a colorless gas at room temperature and a colorless transparent liquid at its own pressure. It is a non-azeotropic mixing refrigerant without chlorine. Suitable for medium and low temperature new commercial refrigeration equipment, transportation refrigeration equipment and refrigeration equipment

R410A is mainly used to replace R22 and R502. It has the characteristics of cleanliness, low toxicity, non-combustible, good refrigeration effect, etc. It is widely used in household air conditioners, small commercial air conditioners, household central air conditioners, etc. (The working pressure is about 1.6 times that of ordinary R22 air conditioners, and the refrigeration (warming) efficiency is high).

R407C is a non-azeotropic mixture of chlorine-free fluorane, colorless gas, stored in cylinders as compressed liquefied gas. Its ODP is 0, R407C has very similar characteristics and performance to R22, become a long-term replacement for R22, used in air conditioning system and non-centrifugal refrigeration system, when used in the original R22 equipment, need to replace the original system parts and chilled oil. (Under the condition of air conditioning, its unit volume refrigeration capacity and refrigeration coefficient is 5% lower than R22; Under low temperature conditions, although the refrigeration coefficient changes little, but unit volume cooling capacity is reduced by 20%)

R32 is mainly a replacement for R22. It is a gas at room temperature and a colorless transparent liquid under its own pressure. It is easy to dissolve in oil but difficult to dissolve in water. Although it has zero ozone depletion potential, it has high global warming potential. Based on the time of every 100 years, its potential is 550 times that of carbon dioxide (R32 refrigerant global warming coefficient is 1/3 of R410A, compared with traditional R410A and R22 refrigerant environmental protection, but R32 has certain flammability)

R290(propane), also known as cold coal, is a new type of environmentally friendly refrigerant. Mainly used for central air conditioning, heat pump air conditioning, household air conditioning and other small refrigeration equipment. High purity grade R290 used as temperature sensing medium; Primary and primary R290 can be used as a refrigerant to replace R22 and R502, compatible with the original system and lubricating oil, for central air conditioning, heat pump air conditioning, household air conditioning and other small refrigeration equipment (flammable and explosive ").