Pump Curve Calculator — Analyze Pump Performance & Efficiency

Pump Curve Calculator

Calculate pump performance curves, analyze efficiency, and determine operating points for centrifugal pumps. Essential tool for engineers and technicians in fluid systems design.

Step 1: Pump Specifications

Understanding Pump Curves

Pump curves show the relationship between flow rate and head pressure. The Best Efficiency Point (BEP) is where the pump operates most efficiently with minimal wear.

Step 2: Fluid & System Properties

75%
3.0

About System Curves

System curves represent the resistance of the piping system. The operating point is where the pump curve intersects the system curve. Proper selection ensures optimal pump performance.

Pump Performance Results

Performance Summary
Pump Comparison
Curve Analysis

Hydraulic Power Required

8.17 kW
Operating Point: 100 m³/h @ 30 m
Shaft Power
10.89 kW
Motor Power
12.10 kW
Efficiency
75%
NPSH Required
4.2 m

Pump Performance Comparison

Pump Type Flow Rate Head Efficiency Power Required

Pump Curve Analysis

Power Calculation Formula

P = (ρ × g × Q × H) / (η × 1000)

Where: ρ = fluid density (kg/m³), g = gravity (9.81 m/s²), Q = flow rate (m³/s), H = head (m), η = pump efficiency (decimal). This gives hydraulic power in kW. Shaft power includes mechanical losses.

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