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:

Where:

• \( W \) — Mass flow rate (pounds per hour)
• \( Q \) — Volumetric flow rate (gallons per minute)
• \( \rho \) — Fluid density (pounds per gallon)

Explanation: The formula converts GPM to lb/hr by multiplying by density and the conversion factor of 60 minutes/hour.

3. Importance of Mass Flow Rate

Details: Mass flow rate is crucial for system design, process control, and energy calculations in fluid systems.

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 converts minutes (from GPM) to hours (for lb/hr) since there are 60 minutes in an hour.

Q2: What's the 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 the density of other fluids?
A: Consult material safety data sheets (MSDS) or engineering references for specific fluid densities.

Q5: What if I need kg/hr instead of lb/hr?
A: First calculate lb/hr, then convert to kg/hr by dividing by 2.20462 (1 kg = 2.20462 lb).