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PSI Calculation Formula:
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The GPH to PSI conversion calculates pressure (PSI) from flow rate (GPH) using head and efficiency factors. This is particularly useful in pump systems and fluid dynamics applications where you need to convert between flow rate and pressure.
The calculator uses the following equation:
Where:
Explanation: The equation converts flow rate to pressure by accounting for the energy required to move fluid against gravity (head) and the efficiency of the pump system.
Details: Accurate PSI calculation is crucial for designing pump systems, selecting appropriate equipment, and ensuring proper system performance in applications like irrigation, industrial processes, and water supply systems.
Tips: Enter GPH (gallons per hour), Head (in feet), and Efficiency (as decimal between 0 and 1, typically 0.7-0.9 for most pumps). All values must be positive numbers.
Q1: What is the typical efficiency range for pumps?
A: Most pumps operate between 70-90% efficiency (0.7-0.9 decimal). Very efficient pumps may reach 95% (0.95).
Q2: How does head affect PSI?
A: Higher head values result in higher PSI for the same flow rate, as more energy is required to overcome greater vertical distances.
Q3: What is the 3960 constant in the formula?
A: It's a conversion factor that accounts for the relationship between gallons, feet, hours, and pounds per square inch.
Q4: Can this be used for any fluid?
A: The formula works best for water. For other fluids, you'd need to account for specific gravity differences.
Q5: How accurate is this calculation?
A: It provides a good estimate for most applications, but actual system performance may vary due to factors like pipe friction, temperature, and exact pump characteristics.