Evaporation Rate Of Cooling Tower Calculation

Evaporation Rate Formula:

\[ E = 0.001 \times \text{Circulation Rate} \times \text{Range} \]

Evaporation Loss (E):

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1. What Is Evaporation Rate Of Cooling Tower?

The evaporation rate of a cooling tower represents the amount of water lost through evaporation during the cooling process. It is a critical parameter in cooling tower operation and water management.

2. How Does The Calculator Work?

The calculator uses the evaporation rate formula:

\[ E = 0.001 \times \text{Circulation Rate} \times \text{Range} \]

Where:

\( E \) — Evaporation loss (gpm)
\( \text{Circulation Rate} \) — Water circulation rate (gpm)
\( \text{Range} \) — Temperature difference between hot and cold water (°F)
\( 0.001 \) — Conversion factor

Explanation: The formula calculates the evaporation loss based on the circulating water flow and the temperature range across the cooling tower.

3. Importance Of Evaporation Rate Calculation

Details: Accurate evaporation rate calculation is essential for proper water treatment, chemical dosing, makeup water requirements, and overall cooling tower efficiency optimization.

4. Using The Calculator

Tips: Enter circulation rate in gallons per minute (gpm) and temperature range in degrees Fahrenheit (°F). Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect evaporation rate in cooling towers?
A: Key factors include air temperature, humidity, water temperature, airflow rate, and tower design characteristics.

Q2: Why is evaporation rate important in cooling tower operation?
A: It helps determine makeup water requirements, chemical treatment needs, and overall system water balance for efficient operation.

Q3: What is the typical evaporation rate for cooling towers?
A: Typically, cooling towers evaporate about 1% of the circulating flow for every 10°F of cooling range, but this varies with conditions.

Q4: How does ambient temperature affect evaporation rate?
A: Higher ambient temperatures and lower humidity generally increase evaporation rates, while high humidity reduces evaporation potential.

Q5: Can this formula be used for all types of cooling towers?
A: This formula provides a general estimation. Specific tower designs and operating conditions may require more detailed calculations.