Water lb/h to GPM Calculator by Tons of Concrete

Flow Rate Formula:

\[ Q = \frac{W}{8.34 \times 60} \]

Flow Rate (GPM):

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1. What is a Water lb/h to GPM Calculator?

Definition: This calculator converts water flow rate from pounds per hour (lb/hr) to gallons per minute (GPM).

Purpose: It helps engineers, plumbers, and water system designers convert between mass flow rate and volumetric flow rate units.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Q = \frac{W}{8.34 \times 60} \]

Where:

\( Q \) — Flow rate (gallons per minute)
\( W \) — Water flow rate (pounds per hour)
8.34 — Weight of 1 gallon of water (pounds)
60 — Minutes per hour conversion

Explanation: The formula converts mass flow rate to volumetric flow rate by accounting for water's density and time unit conversion.

3. Importance of Flow Rate Conversion

Details: Accurate flow rate conversion ensures proper system design, pump sizing, and compliance with engineering specifications.

4. Using the Calculator

Tips: Enter the water flow rate in pounds per hour. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 8.34 used in the formula?
A: 8.34 is the weight in pounds of 1 gallon of water at standard conditions (60°F).

Q2: Does this work for other liquids?
A: No, this calculator is specific to water. Other liquids require different density values.

Q3: How accurate is this conversion?
A: Very accurate for pure water at standard temperature. Accuracy decreases with temperature changes or impurities.

Q4: When would I need this conversion?
A: When working with systems that specify flow rates in different units (e.g., boilers, cooling systems, water treatment).

Q5: What's the reverse calculation (GPM to lb/hr)?
A: Multiply GPM by 500.4 (which is 8.34 × 60).