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Wet and Dry Steam Mass and Volume Fraction Calculator

Heat Transfer Engineering
Thermodynamics

Wet and Dry Steam Mass and Volume Fraction Calculator

Steam is a gaseous form of water-air vapor and there are two forms, wet steam and dry steam. Steam is when all of the steam is in a vapor form and is considered wet when there are tiny liquir particles suspended in the mass of the dry vapor. WAter can be converted to steam by the the application of heat energy however not all water may be converted into dry steam - vs a percentage of wet steam is present.

The dryness fraction of wet steam is utilized to quantify the amount of water dropletts within the steam.

The Quality x of steam condensate can be defined as:

Eq. 1
x = m_VAP / ( m_LIQ + m_VAP )

where

m_VAP = mass of saturated vapor to condensate
m_LIQ = mass of saturated liquid to condensate

The Volume Fraction V_c of the vapor in the condensate is expressed as:

Eq. 2
V_c = V_VAP / ( V_LIQ + V_VAP )

where

V_VAP = volume of saturated vapor in condensate
V_LIQ = volume of saturated liquid in condensate

• Steam Tables - Thermodynamics - Thermodynamics
• Typical Steam Cycle Thermodynamics
• Saturated Steam Table
• Steam Hammer Review
• Saturated Steam Tables Imperial Units
• Saturated Steam Table Chart Metric Units
• Properties of Dry Steam Table Chart
• Babcock Steam Flow Rate Formula and Calculator

Source

• Heat Transfer, A Practical Approach Yunus A. Cengel