Water Evaporation Rate By Temperature Calculator

Evaporation Rate Formula:

\[ Evaporation Rate = (25 + 19 \times V) \times SA \times (Xs - X) \]

Wind Speed (V):

meters per second

Surface Area (SA):

square meters

Saturation Humidity Ratio (Xs):

kg/kg

Actual Humidity Ratio (X):

kg/kg

Evaporation Rate:

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1. What Is The Water Evaporation Rate By Temperature Formula?

The water evaporation rate by temperature formula calculates the rate at which water evaporates from a surface based on wind speed, surface area, and humidity conditions. This is essential for various engineering, environmental, and industrial applications.

2. How Does The Calculator Work?

The calculator uses the evaporation rate formula:

\[ Evaporation Rate = (25 + 19 \times V) \times SA \times (Xs - X) \]

Where:

\( V \) — Wind speed (meters per second)
\( SA \) — Surface area (square meters)
\( Xs \) — Saturation humidity ratio (kg/kg)
\( X \) — Actual humidity ratio (kg/kg)

Explanation: The formula accounts for wind speed's effect on evaporation, surface area available for evaporation, and the humidity deficit that drives the evaporation process.

3. Importance Of Evaporation Rate Calculation

Details: Accurate evaporation rate calculation is crucial for water resource management, cooling system design, agricultural planning, environmental impact assessments, and industrial process optimization.

4. Using The Calculator

Tips: Enter wind speed in m/s, surface area in m², and humidity ratios in kg/kg. Ensure Xs > X for valid evaporation calculation. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect evaporation rate?
A: Temperature, humidity, wind speed, surface area, and atmospheric pressure are the main factors influencing evaporation rates.

Q2: How accurate is this formula?
A: This formula provides a good estimate for engineering purposes but may vary based on specific environmental conditions and surface characteristics.

Q3: What are typical evaporation rates?
A: Evaporation rates range from 0.1-10 kg/m²/hour depending on conditions. Higher temperatures and wind speeds increase evaporation.

Q4: When is this calculation most useful?
A: Useful for cooling tower design, reservoir management, agricultural irrigation planning, and industrial drying processes.

Q5: How does temperature affect evaporation?
A: Higher temperatures increase saturation humidity ratio (Xs), creating a larger humidity deficit and thus higher evaporation rates.