Air Flow Rate Conversion

Conversion Formula:

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

Flow Rate (GPM):

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1. What is Air Flow Rate Conversion?

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

Purpose: It helps in comparing or converting between different flow rate units used in fluid dynamics and HVAC systems.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

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

Explanation: The conversion is based on the fact that 1 cubic foot equals approximately 7.481 gallons.

3. Importance of Flow Rate Conversion

Details: Converting between CFM and GPM is useful when comparing air systems to liquid systems or when working with specifications that use different units.

4. Using the Calculator

Tips: Simply enter the air flow rate in CFM (cubic feet per minute) and the calculator will provide the equivalent in GPM (gallons per minute).

5. Frequently Asked Questions (FAQ)

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

Q2: Is this a direct conversion?
A: Yes, this is a direct unit conversion based on volume equivalence, not accounting for differences in fluid properties.

Q3: When would I need this conversion?
A: Common uses include HVAC system design, pneumatic system analysis, and when comparing air and liquid flow rates in industrial processes.

Q4: What's the conversion factor based on?
A: The factor 7.481 comes from the number of gallons in one cubic foot (exactly 7.48051948 gallons per cubic foot).

Q5: Can I convert GPM back to CFM?
A: Yes, simply multiply GPM by 7.481 to get CFM.