Air Flow Rate Conversion Calculator

Conversion Formula:

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

Flow Rate Equivalent (GPM):

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1. What is an Air Flow Rate Conversion Calculator?

Definition: This calculator converts air flow rate in cubic feet per minute (CFM) to an equivalent liquid flow rate in gallons per minute (GPM).

Purpose: It helps engineers and technicians compare air flow rates with liquid flow rates for system design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

\( Q_{gpm} \) — Equivalent flow rate in gallons per minute
\( Q_{cfm} \) — Air flow rate in cubic feet per minute
7.481 — Conversion factor (gallons per cubic foot)

Explanation: The conversion is based on the volume equivalence between cubic feet and gallons (1 cubic foot = 7.481 gallons).

3. Importance of Flow Rate Conversion

Details: Converting between different flow rate units is essential for system comparisons, pump and fan selection, and cross-disciplinary engineering work.

4. Using the Calculator

Tips: Simply enter the air flow rate in CFM. The calculator will automatically compute the GPM equivalent.

5. Frequently Asked Questions (FAQ)

Q1: Why convert CFM to GPM?
A: This conversion helps when comparing air systems to liquid systems or when working with equipment rated in different units.

Q2: Is this a direct equivalence for flow behavior?
A: No, this only converts volume flow rates. Actual flow characteristics differ between gases and liquids.

Q3: What's the conversion factor based on?
A: 7.481 gallons = 1 cubic foot, which is the standard volume conversion.

Q4: Can I convert GPM back to CFM?
A: Yes, multiply GPM by 7.481 to get CFM.

Q5: Does this account for pressure or temperature?
A: No, this is a simple volume conversion. For precise work, consider gas laws and operating conditions.