Dry Air and Water Vapor - Density and Specific Volume vs. Temperature - Imperial Units
Density and specific volume of dry air and water vapor at temperatures ranging 225 to 900 oF (107 to 482oC) are indicated below.
Values are for atmospheric pressure - 29.96 inches Mercury (760 mm Mercury, 14.696 psia, 1.0333 kg/cm2, 101.33 kPa).
| Temperature | Dry Air | Water Vapor | |||
|---|---|---|---|---|---|
| (oF) | (oC) | Specific Volume (ft3/lb) | Density (lb/ft3) | Specific Volume (ft3/lb) | Density (lb/ft3) |
| 225 | 107 | 17.2 | 0.0581 | 27.7 | 0.0361 |
| 250 | 121 | 17.8 | 0.0562 | 28.7 | 0.0349 |
| 275 | 135 | 18.5 | 0.0541 | 29.7 | 0.0337 |
| 300 | 149 | 19.1 | 0.0524 | 30.8 | 0.0325 |
| 325 | 163 | 19.7 | 0.0508 | 31.8 | 0.0314 |
| 350 | 177 | 20.3 | 0.0493 | 32.7 | 0.0306 |
| 375 | 191 | 21.0 | 0.0476 | 33.8 | 0.0296 |
| 400 | 204 | 21.6 | 0.0463 | 34.8 | 0.0287 |
| 450 | 232 | 22.8 | 0.0439 | 36.8 | 0.0272 |
| 500 | 260 | 24.1 | 0.0415 | 38.8 | 0.0258 |
| 600 | 316 | 26.6 | 0.0376 | 42.9 | 0.0233 |
| 700 | 371 | 29.1 | 0.0344 | 46.9 | 0.0213 |
| 800 | 427 | 31.6 | 0.0316 | 21.0 | 0.0196 |
| 900 | 482 | 34.1 | 0.0293 | 55.0 | 0.0182 |
- T(oF) = [T(oC)](9/5) + 32
- 1 ft3/lbm = 1728 in3/lbm = 7.48 US gal/lbm = 62.43 liter/kg = 0.062 m3/kg
- 1 lb/ft3 = 16.018 kg/m3 = 0.016 g/cm3
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