Air Flow Rate Converter

Air Flow Rate Formula:

\[ Q_{cfm} = Q_{gpm} \times 7.481 \]

Flow Rate (CFM):

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1. What is an Air Flow Rate Converter?

Definition: This calculator converts flow rate from gallons per minute (GPM) to cubic feet per minute (CFM).

Purpose: It helps HVAC professionals, engineers, and technicians convert between different units of flow rate measurement.

2. How Does the Converter Work?

The converter uses the formula:

\[ Q_{cfm} = Q_{gpm} \times 7.481 \]

Where:

\( Q_{cfm} \) — Flow rate in cubic feet per minute (CFM)
\( Q_{gpm} \) — Flow rate in gallons per minute (GPM)
7.481 — Conversion factor (gallons per cubic foot)

Explanation: The GPM value is multiplied by 7.481 (the number of gallons in one cubic foot) to convert to CFM.

3. Importance of Flow Rate Conversion

Details: Proper unit conversion ensures accurate system design, performance calculations, and equipment selection in HVAC and fluid systems.

4. Using the Converter

Tips: Enter the flow rate in GPM. The converter will automatically calculate the equivalent CFM value.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between GPM and CFM?
A: Different industries and applications use different units, and conversion is often needed for system design and analysis.

Q2: Is the conversion factor always 7.481?
A: Yes, this is a constant based on the definition of gallons and cubic feet (1 cubic foot = 7.48052 gallons).

Q3: Can I convert CFM back to GPM?
A: Yes, simply divide the CFM value by 7.481 to get GPM.

Q4: Does this conversion account for temperature or pressure?
A: No, this is a simple volume conversion. For gas flow rates, additional factors may need to be considered.

Q5: What's a typical GPM to CFM conversion in HVAC systems?
A: A common water flow rate of 10 GPM would convert to approximately 74.81 CFM.