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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 / 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 - The study of moist and humid air - psychrometric charts, Mollier diagrams, air-condition temperatures and absolute and relative humidity and moisture content

Related Documents

Air Humidity measured by Dry and Wet Bulb Temperature - Estimate moist air relative humidity by measuring dry and wet bulb temperature
Compressed Air and Water Content - Saturation pressure and maximum water content in compressed air
Density of Moist Humid Air - Density of dry air and water vapor - moist or humid air
Dry Bulb, Wet Bulb and Dew Point Temperatures - Dry Bulb, Wet Bulb and Dew Point temperatures are important to determine the state of humid air
Enthalpy of Moist Air - The enthalpy of humid air consists of sensible and latent heat
Humid Air and the Ideal Gas Law - Pressure, temperature and volume for an ideal or perfect gas like air with water vapor - or moist air
Humidity Ratio of Air - The ratio between the mass of water vapor present in moist air - to the mass of dry air
Maximum Moisture Carrying Capacity of Air - Maximum water content in humid air depends on temperature
Moist Air and Daltons Law of Partial Pressure - Pressure in a mixture of dry air and water vapor - humid or moist air - can be estimated by using Daltons Law of Partial Pressures
Moist Air Properties - Psychrometric table with humid air properties
Moisture Holding Capacity of Air - Moisture holding capacity of air increases with temperature
Relative Humidity in Air - The relative humidity in air can be expressed by partial vapor and air pressure - density of the vapor and air - or by the actual mass of the vapor and air
Water - Saturation Pressure - Online calculator, figures and tables showing water saturation (vapor) pressure at temperatures ranging from 0 to 370 °C and from 32 to 700°F - in Imperial and SI Units
Water Vapor and Saturation Pressure in Humid Air - The saturation pressure of water vapor in moist air varies with temperature

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: https://www.engineeringtoolbox.com/moist-air-saturation-d_685.html [Accessed Day Mo. Year].

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