R450A pressure–temperature chart
R450A is a zeotropic blend. Its normal boiling point is -23.0 °C; the critical pressure is 39.0 bar. At the AHRI 540 air-conditioning rating point — 7.2 °C evaporating, 54.4 °C condensing — the saturation pressures are 3.30 and 12.93 bar, a pressure ratio of 3.91. As a zeotropic blend it evaporates and condenses over a range of temperatures at one pressure — a glide of 0.6 K at 0.0 °C — so the dew line (where the last liquid boils off) and the bubble line (where the first vapour forms) are both tabulated. Superheat is measured up from the dew temperature and subcooling down from the bubble temperature; a map's 8.3 K of subcooling is 8.3 K under the bubble line, not the dew line, and this solver reads it so.
Units: SI · US customary
Saturation table, -75 to 100 °C
| Dew °C | Bubble °C | Glide K | kPa abs | bar abs | psig | hfg kJ/kg | ρ liquid kg/m³ | ρ vapour kg/m³ |
|---|---|---|---|---|---|---|---|---|
| -75 | -75.5 | 0.5 | 4.7 | 0.047 | -14.0 | 232.3 | 1471 | 0.31 |
| -70 | -70.5 | 0.5 | 6.9 | 0.069 | -13.7 | 229.6 | 1458 | 0.45 |
| -65 | -65.5 | 0.5 | 9.8 | 0.098 | -13.3 | 226.9 | 1445 | 0.62 |
| -60 | -60.5 | 0.5 | 13.8 | 0.138 | -12.7 | 224.1 | 1432 | 0.85 |
| -55 | -55.5 | 0.5 | 18.9 | 0.189 | -12.0 | 221.4 | 1418 | 1.15 |
| -50 | -50.5 | 0.5 | 25.6 | 0.256 | -11.0 | 218.6 | 1405 | 1.52 |
| -45 | -45.6 | 0.6 | 34.0 | 0.340 | -9.8 | 215.9 | 1391 | 1.99 |
| -40 | -40.6 | 0.6 | 44.5 | 0.445 | -8.2 | 213.0 | 1378 | 2.56 |
| -35 | -35.6 | 0.6 | 57.6 | 0.576 | -6.3 | 210.2 | 1364 | 3.25 |
| -30 | -30.6 | 0.6 | 73.5 | 0.735 | -4.0 | 207.3 | 1350 | 4.09 |
| -25 | -25.6 | 0.6 | 92.8 | 0.928 | -1.2 | 204.3 | 1336 | 5.09 |
| -20 | -20.6 | 0.6 | 115.8 | 1.158 | 2.1 | 201.3 | 1322 | 6.27 |
| -15 | -15.6 | 0.6 | 143.2 | 1.432 | 6.1 | 198.2 | 1307 | 7.66 |
| -10 | -10.6 | 0.6 | 175.3 | 1.753 | 10.7 | 195.0 | 1292 | 9.28 |
| -5 | -5.6 | 0.6 | 212.8 | 2.128 | 16.2 | 191.7 | 1277 | 11.15 |
| 0 | -0.6 | 0.6 | 256.2 | 2.562 | 22.5 | 188.4 | 1262 | 13.32 |
| 5 | 4.4 | 0.6 | 306.1 | 3.061 | 29.7 | 184.9 | 1246 | 15.81 |
| 10 | 9.4 | 0.6 | 363.2 | 3.632 | 38.0 | 181.3 | 1230 | 18.66 |
| 15 | 14.4 | 0.6 | 428.1 | 4.281 | 47.4 | 177.6 | 1214 | 21.90 |
| 20 | 19.4 | 0.6 | 501.4 | 5.014 | 58.0 | 173.7 | 1197 | 25.59 |
| 25 | 24.4 | 0.6 | 583.8 | 5.838 | 70.0 | 169.7 | 1180 | 29.77 |
| 30 | 29.4 | 0.6 | 676.1 | 6.761 | 83.4 | 165.5 | 1162 | 34.51 |
| 35 | 34.4 | 0.6 | 779.0 | 7.790 | 98.3 | 161.1 | 1143 | 39.87 |
| 40 | 39.4 | 0.6 | 893.2 | 8.932 | 114.9 | 156.5 | 1124 | 45.93 |
| 45 | 44.4 | 0.6 | 1019.6 | 10.196 | 133.2 | 151.6 | 1104 | 52.78 |
| 50 | 49.4 | 0.6 | 1159.0 | 11.590 | 153.4 | 146.5 | 1083 | 60.55 |
| 55 | 54.4 | 0.6 | 1312.1 | 13.121 | 175.6 | 141.1 | 1061 | 69.37 |
| 60 | 59.4 | 0.6 | 1480.1 | 14.801 | 200.0 | 135.3 | 1038 | 79.42 |
| 65 | 64.5 | 0.5 | 1663.7 | 16.637 | 226.6 | 129.0 | 1014 | 90.94 |
| 70 | 69.5 | 0.5 | 1864.0 | 18.640 | 255.7 | 122.3 | 987 | 104.22 |
| 75 | 74.5 | 0.5 | 2082.2 | 20.822 | 287.3 | 115.0 | 959 | 119.70 |
| 80 | 79.5 | 0.5 | 2319.6 | 23.196 | 321.7 | 106.9 | 927 | 137.99 |
| 85 | 84.6 | 0.4 | 2577.5 | 25.775 | 359.1 | 97.7 | 891 | 160.17 |
| 90 | 89.6 | 0.4 | 2857.6 | 28.576 | 399.8 | 87.3 | 851 | 187.52 |
| 95 | 94.7 | 0.3 | 3162.3 | 31.623 | 444.0 | 74.5 | 801 | 223.67 |
| 100 | 99.7 | 0.3 | 3494.8 | 34.948 | 492.2 | 57.4 | 734 | 277.04 |
Pressures are absolute in kPa and bar, gauge in psig (at 101.325 kPa atmospheric); hfg is the latent heat of vaporisation at the dew pressure; densities are saturated liquid and saturated vapour. Computed with CoolProp 8.0.0, the open-source property library the solver runs on, sampled every 0.5 K and printed every 5 K — the same tables the builder reads when it solves a circuit on R450A.
R450A compressors in the catalog
32 compressor maps run on R450A, each a page with its AHRI 540 / EN 12900 map across the published envelope, and each selectable in the builder. Read any of them at your own evaporating and condensing temperatures →
The largest at the air-conditioning point
- Copeland RRT10K1E-PFV (R450A hermetic recip, 60 Hz, HT) — 2.7 kW at 7.2 / 54.4 °C
- Copeland RRT81C1E-PFV (R450A hermetic recip, 60 Hz, HT) — 2.4 kW at 7.2 / 54.4 °C
- Copeland RRT10K1E-PFZ (R450A hermetic recip, 50 Hz, HT) — 2.3 kW at 7.2 / 54.4 °C
- Copeland RRT73C1E-CAA (R450A hermetic recip, 60 Hz, HT) — 1.9 kW at 7.2 / 54.4 °C
- Copeland RRT81C1E-PFZ (R450A hermetic recip, 50 Hz, HT) — 1.9 kW at 7.2 / 54.4 °C
- Copeland RRT64C1E-CAA (R450A hermetic recip, 60 Hz, HT) — 1.8 kW at 7.2 / 54.4 °C
- Copeland RRT73C1E-CAB (R450A hermetic recip, 50 Hz, HT) — 1.6 kW at 7.2 / 54.4 °C
- Copeland RRT64C1E-CAB (R450A hermetic recip, 50 Hz, HT) — 1.5 kW at 7.2 / 54.4 °C
- Copeland RRT62C1E-IAA (R450A hermetic recip, 60 Hz, HT) — 1.5 kW at 7.2 / 54.4 °C
- Copeland ARE48C5E-CAA (R450A hermetic recip, 60 Hz, HT) — 1.4 kW at 7.2 / 54.4 °C
Open the R450A chart in the app — the pressure–temperature line drawn, readable at any point, with a compressor's envelope over it — or open the builder and draw a circuit on R450A: the solver finds its evaporating and condensing temperatures from the coils and the compressor's map.