Degree Of Saturation Given Partial Pressure Of Water Vapour Calculator

Degree Of Saturation Formula:

\[ S = \frac{p_v}{p_s} \times \frac{1 - \frac{p_s}{p_t}}{1 - \frac{p_v}{p_t}} \]

Pressure of Water Vapor (p_v):

Partial Pressure of Water Vapour in Saturated Air (p_s):

Total Pressure of Moist Air (p_t):

Degree of Saturation (S):

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1. What is Degree of Saturation?

Degree of saturation is the ratio of the volume of water to the volume of voids in a soil or air mixture. It indicates how much of the void space is filled with water compared to the maximum possible amount.

2. How Does the Calculator Work?

The calculator uses the Degree of Saturation formula:

\[ S = \frac{p_v}{p_s} \times \frac{1 - \frac{p_s}{p_t}}{1 - \frac{p_v}{p_t}} \]

Where:

\( S \) — Degree of Saturation
\( p_v \) — Pressure of Water Vapor (Pa)
\( p_s \) — Partial Pressure of Water Vapour in Saturated Air (Pa)
\( p_t \) — Total Pressure of Moist Air (Pa)

Explanation: The formula calculates the degree of saturation based on the relationship between water vapor pressure, saturated vapor pressure, and total pressure in moist air.

3. Importance of Degree of Saturation Calculation

Details: Calculating degree of saturation is crucial for understanding moisture content in air, humidity levels, and various engineering applications involving air-water mixtures and soil mechanics.

4. Using the Calculator

Tips: Enter pressure values in Pascals (Pa). All values must be positive, and total pressure must be greater than both water vapor pressure and saturated vapor pressure for valid results.

5. Frequently Asked Questions (FAQ)

Q1: What is the range of degree of saturation values?
A: Degree of saturation ranges from 0 (completely dry) to 1 (fully saturated).

Q2: How does degree of saturation relate to relative humidity?
A: While related, degree of saturation and relative humidity are different concepts. Relative humidity is the ratio of partial pressure of water vapor to the saturated vapor pressure at the same temperature.

Q3: What units should be used for pressure inputs?
A: The calculator uses Pascals (Pa) as the pressure unit. Make sure all pressure values are in the same units for accurate calculations.

Q4: When is this calculation particularly important?
A: This calculation is important in meteorology, HVAC systems, soil mechanics, and any application where moisture content in air or soil needs to be quantified.

Q5: What if I get a result greater than 1?
A: A result greater than 1 indicates supersaturation, which is an unstable condition where the air contains more water vapor than it can hold at that temperature and pressure.