Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Moist Air - Degree of Saturation

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

Sponsored Links

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)

Sponsored Links

Related Topics

  • Air Psychrometrics

    Moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content.

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about


This page can be cited as

  • The Engineering ToolBox (2004). Moist Air - Degree of Saturation. [online] Available at: [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter


Sponsored Links