1. What is GPM to kW Conversion?

The GPM to kW conversion calculates the thermal power (in kilowatts) based on water flow rate (in gallons per minute) and temperature difference (in °C). This is commonly used in hydronic heating and cooling systems.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( GPM \) — Flow rate in gallons per minute
• \( \Delta T \) — Temperature difference in degrees Celsius
• 0.163 — Conversion factor (incorporates water density and specific heat)

Explanation: The formula calculates thermal energy transfer based on water flow and temperature change.

3. Importance of This Calculation

Details: This calculation is essential for sizing boilers, chillers, and heat exchangers in HVAC systems, as well as for energy efficiency assessments.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Can this be used for other fluids besides water?
A: No, the conversion factor (0.163) is specific to water. Other fluids require different factors based on their density and specific heat.

Q2: What if my temperature difference is in Fahrenheit?
A: First convert Fahrenheit to Celsius (°C = (°F - 32) × 5/9) before using the calculator.

Q3: How accurate is this calculation?
A: It's accurate for water under standard conditions (approximately 20°C). Accuracy decreases for extreme temperatures or pressures.

Q4: What's the typical GPM range for residential systems?
A: Typically 3-10 GPM for residential hydronic heating systems, but varies based on system design.

Q5: How does this relate to pump power requirements?
A: This calculates thermal power only. Pump power depends on flow rate and system pressure drop.