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Mass Flow Rate Calculation Formula

Mass Flow Rate Formula:

\[ W = Q \times \rho \times 60 \]

GPM
lb/gal
lb/hr

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1. What is Mass Flow Rate Calculation?

Definition: This calculator determines the mass flow rate of a fluid based on its volumetric flow rate and density.

Purpose: It helps engineers and technicians convert between volumetric and mass flow rates in fluid systems.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = Q \times \rho \times 60 \]

Where:

Explanation: The formula converts GPM to pounds per hour by accounting for fluid density and time conversion.

3. Importance of Mass Flow Rate

Details: Mass flow rate is critical for system design, process control, and material balance calculations in chemical, petroleum, and water treatment industries.

4. Using the Calculator

Tips: Enter the flow rate in GPM and fluid density in lb/gal (default 8.34 for water). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by 60 in the formula?
A: The factor 60 converts minutes (from GPM) to hours (for lb/hr) since there are 60 minutes in an hour.

Q2: What's the typical density of water?
A: Water is approximately 8.34 lb/gal at standard conditions (60°F, 1 atm).

Q3: How do I find density for other fluids?
A: Consult material safety data sheets (MSDS) or chemical engineering references for specific fluid densities.

Q4: Can I use this for gases?
A: This formula works best for liquids. For gases, you'll need to account for compressibility and temperature effects.

Q5: What if my flow rate is in different units?
A: Convert to GPM first or modify the formula to match your input units.

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