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Psychrometric Chart Calculator

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Browser-based fluid properties and psychrometric tools for engineers.

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Altitude
Atmospheric Pressure
P
Dry-bulb Temperature
Tdb
Wet-bulb Temperature
Twb
Relative Humidity
RH
Dew Point Temperature
Tdp
Humidity Ratio
W
Enthalpy
Hda
Specific Volume
Vda
0.858
m³/kg_da
Entropy
Sda
0.181
kJ/kg_da·K
Water Mole Fraction
psi_w
0.016
-
Learn
A short guide to reading moist air properties and psychrometric charts.
Psychrometric ChartDew PointWet-bulb temperature (Twb)RH vs Humidity Ratio (W)Mixing OA & RAView all Wiki topics
Chart