Pool Evaporation Rate Calculator

Pool Evaporation Rate Formula:

\[ Rate = \frac{Pool Area \times Evaporation Coefficient \times Vapor Pressure Diff}{Latent Heat} \]

Pool Area:

sq ft

Evaporation Coefficient:

Vapor Pressure Diff:

in Hg

Latent Heat:

BTU/lb

Evaporation Rate:

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1. What Is The Pool Evaporation Rate Formula?

The Pool Evaporation Rate Formula calculates the rate at which water evaporates from a swimming pool based on pool area, evaporation coefficient, vapor pressure difference, and latent heat of vaporization.

2. How Does The Calculator Work?

The calculator uses the evaporation rate formula:

\[ Rate = \frac{Pool Area \times Evaporation Coefficient \times Vapor Pressure Diff}{Latent Heat} \]

Where:

\( Pool Area \) — Surface area of the pool (sq ft)
\( Evaporation Coefficient \) — Dimensionless coefficient representing evaporation efficiency
\( Vapor Pressure Diff \) — Difference in vapor pressure (in Hg)
\( Latent Heat \) — Latent heat of vaporization (BTU/lb)

Explanation: The formula calculates the daily evaporation rate by considering the physical properties of water and environmental factors affecting evaporation.

3. Importance Of Evaporation Rate Calculation

Details: Calculating pool evaporation rate is essential for water conservation, maintaining proper chemical balance, and planning water replenishment schedules.

4. Using The Calculator

Tips: Enter pool area in square feet, evaporation coefficient as a dimensionless number, vapor pressure difference in inches of mercury, and latent heat in BTU per pound. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What Is A Typical Evaporation Coefficient For Pools?
A: The evaporation coefficient typically ranges from 0.5 to 1.0, depending on environmental conditions and pool characteristics.

Q2: How Does Temperature Affect Evaporation Rate?
A: Higher temperatures increase vapor pressure difference, leading to higher evaporation rates.

Q3: Why Is Latent Heat Important In This Calculation?
A: Latent heat represents the energy required for phase change from liquid to vapor, which directly affects the evaporation rate.

Q4: How Can I Reduce Pool Evaporation?
A: Using pool covers, reducing water temperature, and maintaining proper humidity levels can help reduce evaporation.

Q5: Is This Calculation Accurate For All Pool Types?
A: While the formula provides a good estimate, actual evaporation rates may vary based on specific pool design, wind exposure, and local climate conditions.