Air - Specific Heat Ratio
Specific Heat Ratio of air at temperatures ranging -40 - 1000 degC (-40 - 1500 degF) at standard atmospheric pressure - Imperial and SI Units.
Specific Heat Ratio of Air at Standard Atmospheric Pressure in Imperial (BG) Units:
| Temperature - t - (oF) | Specific Heat Ratio k = cp / cv |
|---|---|
| -40 | 1.401 |
| -20 | 1.401 |
| 0 | 1.401 |
| 10 | 1.401 |
| 20 | 1.401 |
| 30 | 1.401 |
| 40 | 1.401 |
| 50 | 1.401 |
| 60 | 1.401 |
| 70 | 1.401 |
| 80 | 1.400 |
| 90 | 1.400 |
| 100 | 1.400 |
| 120 | 1.400 |
| 140 | 1.399 |
| 160 | 1.399 |
| 180 | 1.399 |
| 200 | 1.398 |
| 300 | 1.394 |
| 400 | 1.389 |
| 500 | 1.383 |
| 750 | 1.367 |
| 1000 | 1.351 |
| 1500 | 1.329 |
- cp = specific heat - constant pressure
- cv = specific heat - constant volume
Specific Heat Ratio of Air at Standard Atmospheric Pressure in SI Units:
| Temperature - t - (oC) | Specific Heat Ratio k = cp / cv |
|---|---|
| -40 | 1.401 |
| -20 | 1.401 |
| 0 | 1.401 |
| 5 | 1.401 |
| 10 | 1.401 |
| 15 | 1.401 |
| 20 | 1.401 |
| 25 | 1.401 |
| 30 | 1.400 |
| 40 | 1.400 |
| 50 | 1.400 |
| 60 | 1.399 |
| 70 | 1.399 |
| 80 | 1.399 |
| 90 | 1.398 |
| 100 | 1.397 |
| 200 | 1.390 |
| 300 | 1.379 |
| 400 | 1.368 |
| 500 | 1.357 |
| 1000 | 1.321 |
