1. What is Mass Flow Rate Equation?

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

Purpose: It helps engineers and technicians determine the mass of fluid moving through a system per unit time.

2. How Does the Equation Work?

The equation is:

Where:

• \( W \) — Mass flow rate (pounds per hour)
• \( Q \) — Volumetric flow rate (gallons per minute)
• \( \rho \) — Fluid density (pounds per gallon)
• 60 — Conversion factor (minutes to hours)

Explanation: The volumetric flow rate is multiplied by density to get mass per minute, then by 60 to convert to hourly rate.

3. Importance of Mass Flow Rate Calculation

Details: Accurate mass flow rate calculations are essential for system design, process control, and equipment sizing in fluid systems.

4. Using the Calculator

Tips: Enter the volumetric 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 equation?
A: The factor converts the flow rate from per-minute to per-hour basis (60 minutes in an hour).

Q2: What's the typical density of water?
A: Water at standard conditions is approximately 8.34 lb/gal.

Q3: Can I use this for gases?
A: Yes, but gas densities vary significantly with pressure and temperature, so use appropriate density values.

Q4: How do I find volumetric flow rate?
A: Use flow meters or calculate from pipe dimensions and velocity.

Q5: What units does this calculator use?
A: US customary units (GPM, lb/gal, lb/hr). For metric units, different conversion factors apply.