1. What Is Chiller Flow Rate Calculation?

The chiller flow rate calculation determines the water flow rate through a chiller system in gallons per minute (GPM) based on the chiller capacity in tons and the temperature difference (ΔT) across the chiller.

2. How Does The Calculator Work?

The calculator uses the chiller flow rate formula:

Where:

• \( \text{Tons} \) — Chiller capacity in refrigeration tons
• \( \Delta T \) — Temperature difference across the chiller in °F
• \( 500 \) — Conversion factor (1 ton refrigeration = 12,000 BTU/hr, 1 GPM water flow with 1°F ΔT = 500 BTU/hr)

Explanation: This formula calculates the required water flow rate to achieve the specified temperature difference for a given chiller capacity.

3. Importance Of Flow Rate Calculation

Details: Proper flow rate calculation is essential for chiller system design, ensuring efficient heat transfer, preventing equipment damage, and maintaining optimal system performance.

4. Using The Calculator

Tips: Enter chiller capacity in tons and temperature difference in °F. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical ΔT for chiller systems?
A: Most chiller systems are designed for a ΔT of 10°F, but this can vary based on system design and application requirements.

Q2: Why is 500 used in the formula?
A: The factor 500 comes from the conversion: 1 GPM of water flow with 1°F temperature difference transfers 500 BTU/hr of heat.

Q3: Can this formula be used for metric units?
A: No, this formula is specifically for imperial units. For metric units, different conversion factors apply.

Q4: What affects chiller flow rate requirements?
A: Chiller capacity, temperature difference, fluid type, and system pressure drop all influence flow rate requirements.

Q5: How does flow rate impact chiller efficiency?
A: Proper flow rate ensures efficient heat transfer. Too low flow can cause freezing, while too high flow increases pump energy consumption.