Description
Technical Parameters
Isobutane (R600a) vs. Common Refrigerants – Key Comparisons
| Property | Isobutane (R600a) | Propane (R290) | HFC-134a | HFO-1234yf | Ammonia (R717) |
|---|---|---|---|---|---|
| Chemical Formula | i-C₄H₁₀ | C₃H₈ | CH₂FCF₃ | CF₃CF=CH₂ | NH₃ |
| Ozone Depletion (ODP) | 0 | 0 | 0 | 0 | 0 |
| Global Warming (GWP) | 3 | 3 | 1,430 | <1 | 0 |
| Flammability | Highly flammable | Highly flammable | Non-flammable | Mildly flammable | Toxic/Flammable |
| Energy Efficiency | High | High | Moderate | Moderate | Very High |
| Typical Applications | Household fridges | Commercial refrigeration | Auto AC (phasing out) | New auto AC systems | Industrial systems |
| Cost | Low | Low | Moderate | Very High | Low |
| Safety Requirements | Ventilation + leak detection | Same as R600a | Minimal | Special handling | Strict ventilation needed |
Why Isobutane (R600a) Wins?
Best balance of eco-friendliness (GWP=3) and cost
Proven in 500M+ household fridges (safer than ammonia)
No phase-out risk (unlike HFCs like R134a)
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