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# 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 degF (107 to 482 degC).

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).

TemperatureDry AirWater 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

## Related Topics

• Air Psychrometrics - Moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content.
• Densities - Densities of solids, liquids and gases. Definitions and convertion calculators.

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

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