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Moist Air - Degree of Saturation

Humidity ratio of moist air to humidity ratio of saturated moist air.

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Degree of Saturation is the ratio of the humidity ratio of moist air - to the humidity ratio of saturated moist air at the same temperature and pressure.

The Degree of Saturation can be expressed as

μ = x / x s (1)

where

μ = degree of saturation

x = humidity ratio of the air (kg h20 /kg dry_air )

x s = humidity ratio of the air at saturation at the same temperature and pressure (kg h20 /kg dry_air )

The degree of saturation can also be expressed as:

μ = φ (p a - p ws ) / (p a - p w ) (2)

where

μ = degree of saturation

φ = relative humidity (%)

p w = vapor pressure (mbar)

p ws = saturation vapor pressure at the actual dry bulb temperature (mbar)

p a = atmospheric pressure of moist air (mbar)

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Related Topics

  • Air Psychrometrics

    Moist and humid air calculations. Psychrometric charts and Mollier diagrams. Air-condition systems temperatures, absolute and relative humidities and moisture content in air.

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