Performance of refrigerant R404A in Wuhan Shangshang cold and hot impact testing machine;
R404A is a mixture of HFC 125, HFC- 134a and HFC- 143. It is a colorless gas at room temperature and a colorless transparent liquid under its own pressure. R-404A is suitable for new commercial refrigeration equipment, transportation refrigeration equipment or upgraded equipment with medium and low temperature. The refrigerant is closest to the operation of R-502, even reaching 15℉(-9.4℃), or even colder. This refrigerant is suitable for all environments where R-502 can work normally.
Performance of refrigerant R23 on Wuhan Shangjian cold and hot impact tester;
R23, as a widely used cryogenic refrigerant, is a very effective and safe CFC- 13(R 13, R- 13, Freon 13) and R-503 due to its good comprehensive performance. Mainly used for low-temperature equipment (including scientific research refrigeration, medical refrigeration, etc.). ) such as high-low temperature alternating damp-heat test box, Wuhan cold-heat impact tester, freeze dryer/freeze dryer, ultra-low temperature refrigerator or freezer, etc. , mostly used in the low temperature stage of cascade refrigeration system of high and low temperature test box.
Performance of R507 refrigerant on Wuhan Shangjian cold and hot impact tester;
R507 is a mixture of R 125/R 143 refrigerants, which is an environmentally friendly refrigerant that does not destroy the ozone layer. It is a long-term substitute for R-502 refrigerant (HFC substance), with zero ODP value and no substances that destroy the ozone layer. Because the refrigeration capacity and efficiency of R507 refrigerant are very close to that of R502, and it has excellent heat transfer performance and low toxicity, R507 is more suitable for temperature and humidity test chamber, rapid temperature change test chamber and Hubei constant temperature and humidity test chamber than any other known substitute of R-502. The ODP value of R507 is zero and the GWP value is high. The standard boiling point of R507 is -46.7℃, which is very close to the standard evaporation temperature of R502. Under the same working conditions, the refrigerating capacity per unit volume is slightly higher than R502, and the compressor discharge temperature is slightly lower than R502. Only the condensation pressure is slightly higher than R502, so the pressure is slightly higher than R502S.