R438A refrigerant is replaceable in direct expansion air conditioning and refrigeration systemsR22the multifunctionalrefrigerant, used in medium and low temperature commercial refrigeration systems such as household and commercial air conditioners, catering refrigeration, supermarket display cabinets, and food storage and processing. The replacement process does not require changes to the expansion valve and lines, replacement of refrigerant oil, direct replenishment, and drainage of the filled refrigerant.
Composition of R438A
Mole percentage: R32 accounts for 16.1916%, R125 accounts for 37.1559%, R134A accounts for 42.9299%, R600 accounts for 2.89855%, R601a accounts for 0.82413%
Mass percentage:R32accounting for 8.5%,R125accounting for 44.9%,R134Aaccounting for 44.1%,R600accounting for 1.7%,R601aaccounted for 0.8%
R438A refrigerant parameters
| Name: R438A, HFC-438A, HC-438A | Classification: Mixed refrigerants |
| Molecular weight: 99 | Molar mass: 99g/mol |
| CAS Number: 75-10-5/354-33-6/811-97-2/106-97-8/78-78-4 | Critical temperature: 85℃ |
| Critical pressure: 4.3MPa | Critical density: 0.511g/cm3 |
| ODP:0 | GWP：0.225 |
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R437A refrigerant
