Densities and Specific Volumes of Dry Air and Water Vapor

Densities and specific volumes of dry air and water vapor at temperatures ranging 225 to 900 degF (107 to 482 degC)

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Densities and specific volumes of dry air and water vapor at temperatures ranging 225 to 900 oF (107 to 482oC) are indicated below.

Values at 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

(Cu Ft per Lb)

Density

(Lb per Cu Ft)

Specific Volume

(Cu Ft per Lb)

Density

(Lb per Cu Ft)
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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Related Topics

  • Air Psychrometrics - The study of moist and humid air - air condition - psychrometric charts, Mollier diagrams, air temperature, absolute and relative humidity, moisture content and more .

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