1. What is GPM to kW Cooling Calculation?

The GPM to kW cooling calculation converts water flow rate and temperature difference into cooling power. It's essential for sizing chillers, cooling towers, and other HVAC equipment.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( GPM \) — Water flow rate in gallons per minute
• \( \Delta T \) — Temperature difference in Fahrenheit
• 500 — Conversion factor (lb/gal × Btu/lb-°F)
• 3412 — Conversion from Btu/h to kW

Explanation: The formula calculates the heat transfer rate based on water flow and temperature change, then converts it to kilowatts.

3. Importance of Cooling Power Calculation

Details: Accurate cooling power calculation is crucial for proper HVAC system design, energy efficiency, and equipment selection.

4. Using the Calculator

Tips: Enter flow rate in GPM and temperature difference in °F. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between cooling and heating calculations?
A: The formula is similar, but cooling calculations typically use the temperature difference between supply and return water.

Q2: Can I use this for other fluids besides water?
A: No, this calculator is specific to water. Other fluids have different specific heat capacities and densities.

Q3: What's a typical ΔT for chilled water systems?
A: Most systems are designed for ΔT of 10-20°F, with 12°F being common for comfort cooling.

Q4: How does this relate to chiller tonnage?
A: 1 ton of cooling equals 3.516 kW. You can convert the result to tons by dividing kW by 3.516.

Q5: What if my flow is in L/s instead of GPM?
A: First convert L/s to GPM (1 L/s ≈ 15.85 GPM) or use a different formula with metric units.