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Moist Air and 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 / xs                                      (1)


μ = degree of saturation

xhumidity ratio of the air (kgh20/kgdry_air)

xshumidity ratio of the air at saturation at the same temperature and pressure (kgh20/kgdry_air)

The degree of saturation can also be expressed as:

μ = φ (pa - pws) / (pa - pw)                               (2)


μ = degree of saturation

φ = relative humidity (%)

pw = vapor pressure (mbar)

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

pa = atmospheric pressure of moist air (mbar)

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Related Topics

Related Documents

Tag Search

  • en: degree saturation moist air
  • es: aire húmedo saturación de grado
  • de: Grad der Sättigung feuchte Luft
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  • Engineering ToolBox, (2004). Moist Air and Degree of Saturation. [online] Available at: [Accessed Day Mo. Year].

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