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Moist Air Properties

Psychrometric table with humid air properties

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  • pressure of water vapor at saturation
  • humidity ratio at saturation
  • specific volume of dry air
  • specific volume of saturated mixture
  • specific enthalpy of dry air
  • specific enthalpy of saturated mixture
  • specific entropy of saturated mixture

For full table with Specific Volume and Specific Enthalpy - rotate the screen!

TemperatureSaturation Pressure
(Pa)

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Humidity ratio at Saturation
(kgH2O/kgdry air)
Specific VolumeSpecific EnthalpySpecific Entropy
(J/K.kgdry air)
oCoFDry Air
(m3/kg)

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 Saturated Mixture
(m3/kg)

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Dry Air
(kJ/kgdry air)

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Saturated Mixture
(kJ/kgdry air)

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-40 -40 12.84 0.000079 0.660 0.660 -40.2 -40.0 -90.7
-30 -22 38 0.00023 0.688 0.688 -30.2 -29.6 -46.7
-25 -13 63.25 0.00039 0.702 0.703 -25.2 -24.2 -24.7
-20 -4 103.2 0.00064 0.716 0.717 -20.1 -18.5 -2.2
-15 5 165.2 0.0010 0.731 0.732 -15.1 -12.6 21.2
-10 14 259.2 0.0016 0.745 0.747 -10.1 -6.1 46.1
-5 23 401.5 0.0025 0.759 0.762 -5.0 1.2 76.4
0 32 610.8 0.0038 0.773 0.778 0 9.5 104.1
5 41 871.9 0.0054 0.788 0.794 5.0 18.6 137.4
10 50 1227 0.0077 0.802 0.812 10.1 29.5 175.4
15 59 1704 0.011 0.816 0.830 15.1 42.9 220.2
20 68 2337 0.015 0.830 0.850 20.1 58.2 273.3
25 77 3167 0.020 0.844 0.872 25.2 76.1 337.4
30 86 4243 0.027 0.859 0.896 30.2 99.2 415.6
35 95 5623 0.037 0.873 0.924 35.2 130.1 512.2
40 104 7378 0.049 0.887 0.957 40.2 166.4 532.3
45 113 9585 0.065 0.901 0.995 45.3 213.2 783.1
50 122 12339 0.087 0.915 1.042 50.3 275.9 975.3
55 131 14745 0.12 0.929 1.1 55.3 367.6 1221
60 140 19925 0.15 0.944 1.175 60.4 452.1 1544
65 149 25014 0.21 0.958 1.272 65.4 615.7 1974
70 158 31167 0.28 0.972 1.404 70.4 806.8 2565
75 167 38554 0.38 0.986 1.592 75.5 1078 3413
80 176 47365 0.55 1 1.879 80.5 1537 4711
85 185 57809 0.84 1.015 2.363 85.5 2317 6893
90 194 70112   1.03 3.340   3876 11281
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Unit Converters

Temperature

oC
oF


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Length

m
km
in
ft
yards
miles
naut miles


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Area

m2
km2
in2
ft2
miles2
acres


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Volume

m3
liters
in3
ft3
us gal


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Weight

kgf
N
lbf


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Velocity

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


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Pressure

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


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Flow

m3/s
m3/h
US gpm
cfm


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