The Pool Evaporation Rate Calculator is a handy tool designed to estimate the rate at which water evaporates from a swimming pool’s surface. By inputting key factors such as pool surface area, temperature difference, wind speed, and humidity factor, users can quickly determine the approximate amount of water lost due to evaporation over a certain period.
Formula of Pool Evaporation Rate Calculator
The calculation utilizes the following formula:
Evaporation rate = K * A * ΔT * v * (1 – H)
Where:
- A: Pool surface area (measured in square feet)
- ΔT: Temperature difference (in degrees Fahrenheit)
- v: Wind speed (in miles per hour)
- H: Humidity factor (a dimensionless value between 0 and 1)
- K: Constant value (varies depending on formula and units)
Table of General Terms
Here’s a table outlining example water loss for different pool sizes and wind speeds assuming an average temperature difference of 10°F and 50% humidity:
| Pool Size (sq. ft.) | Wind Speed (mph) | Estimated Water Loss (gallons per day) |
|---|---|---|
| 200 | 5 | 3.5 |
| 200 | 10 | 5.0 |
| 300 | 5 | 5.3 |
| 300 | 10 | 7.5 |
Remember: These are general estimates and may vary depending on your specific climate, pool temperature, and other factors.
Example of Pool Evaporation Rate Calculator
Let’s consider a pool with a surface area of 500 ft², a temperature difference of 10°F, a wind speed of 5 mph, and a humidity factor of 0.5. Plugging these values into the formula:
Evaporation rate = K * 500 * 10 * 5 * (1 – 0.5)
Assuming K is 0.002 (as a constant value), the calculated evaporation rate would be the result.
Most Common FAQs
The pool surface area, temperature difference between water and air, wind speed, and humidity level are the primary factors influencing evaporation rate.
Installing a pool cover, minimizing water splashing, reducing wind exposure around the pool area, and maintaining optimal humidity levels can help mitigate water loss through evaporation.
Understanding the rate of water loss through evaporation is crucial for maintaining proper water levels, managing chemical balance, and optimizing pool maintenance efforts.
Nonsense!
Your formula calculates an Evaporation Rate in cu ft / hour is complete nonsense for a 500 sq ft, 10 degrees, 5 mph and 0.5 for humidity factor and K =0.002 which by your formula produces an evaporation rate of 25 cu ft / hr! At that rate, the example pool would lose all of its water in about 3 or 4 days. Really? Be nice if someone checked out your formulas before posting!
Thank you for your feedback. We’ve made an improvement by adding an input for the constant “K” so users can adjust it rather than using a hardcoded value. This allows for better flexibility based on specific environmental conditions. Regarding your calculation, it was likely off because the default constant might not have been suitable for your scenario. By adjusting the constant, you’ll see more realistic results that better reflect real-world conditions. Feel free to try the updated version and let us know if it resolves the issue!