1. What Is Pump Discharge Pressure?

Pump Discharge Pressure (PDP) is the pressure measured at the discharge side of a pump, representing the total pressure the pump must generate to overcome system resistance and deliver fluid to the desired location.

2. How Does The Calculator Work?

The calculator uses the pump discharge pressure formula:

Where:

• \( PDP \) — Pump Discharge Pressure (psi)
• \( Head \) — Total dynamic head (feet)
• \( SG \) — Specific gravity of the fluid (unitless)
• \( 2.31 \) — Conversion factor from feet of head to psi

Explanation: This formula converts hydraulic head to pressure, accounting for the density of the fluid being pumped through the specific gravity factor.

3. Importance Of PDP Calculation

Details: Accurate PDP calculation is essential for proper pump selection, system design, energy efficiency optimization, and ensuring safe operation within pressure limits.

4. Using The Calculator

Tips: Enter head in feet and specific gravity as a dimensionless number. Ensure values are positive and within realistic ranges for your application.

5. Frequently Asked Questions (FAQ)

Q1: What Is The Difference Between Head And Pressure?
A: Head represents the energy per unit weight of fluid (in feet), while pressure is force per unit area (in psi). They are related through fluid density.

Q2: Why Is Specific Gravity Important In This Calculation?
A: Specific gravity accounts for fluid density differences. Denser fluids require more pressure to achieve the same head compared to water.

Q3: What Is The 2.31 Conversion Factor?
A: 2.31 converts feet of water head to psi (1 psi = 2.31 feet of water head at standard conditions).

Q4: When Should This Formula Be Used?
A: This formula is used for centrifugal pumps handling Newtonian fluids at standard temperatures and pressures.

Q5: Are There Limitations To This Calculation?
A: This calculation assumes ideal conditions and doesn't account for friction losses, elevation changes, or viscosity effects in the piping system.