Features
The r729 is air and is used for aircraft air conditioning and cryogenic refrigeration equipment. It is a natural refrigerant, and GWP is a low value. It is often used in aircraft, although it is not very efficient as an equipment from its absolute safety. When it is used at cryogenic temperatures, it becomes a very effective refrigerant.
| Refrigerant number |
R729 |
| Name |
Air (mixtures of nitrogen, oxygen, carbon dioxide, argon, water vapor, etc.) |
| Category | Natural refrigerant |
| Molecular structure | － |
| ODP | 0 |
| GWP | 0 |
| Safety classification | Nonflammable, non-toxic A1 |