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Centrifugal Pump Affinity Laws (Speed & Head) Calculator

Easily calculate and compute centrifugal pump affinity laws (speed & head) calculator with accurate equations, live formulas, and expert guidance.

Calculated Result
120 GPM

New Flow Rate (GPM)

New Flow Rate (GPM)

120 GPM

New Flow Rate Gpm

120

Head Pressure Multiplier

1.44

Brake Horsepower Multiplier

1.73

120 — GPM

Calculation Breakdown

  1. Applied FormulaApplies hydraulic Pump Affinity Laws to predict changes in discharge flow rate, head pressure, and required motor horsepower when altering pump impeller RPM.\dfrac{Q_2}{Q_1} = \dfrac{N_2}{N_1}, \quad \dfrac{H_2}{H_1} = \left(\dfrac{N_2}{N_1}\right)^2

Pump Affinity Laws Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.0306090120New Flow Rate (GPM)

What Is the Centrifugal Pump Affinity Laws (Speed & Head) Calculator?

This tool computes centrifugal pump affinity laws (speed & head) calculator with high precision arithmetic.

How Does the Centrifugal Pump Affinity Laws (Speed & Head) Calculator Work?

Applies hydraulic Pump Affinity Laws to predict changes in discharge flow rate, head pressure, and required motor horsepower when altering pump impeller RPM.

Centrifugal Pump Affinity Laws (Speed & Head) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Q2Q1=N2N1,H2H1=(N2N1)2\dfrac{Q_2}{Q_1} = \dfrac{N_2}{N_1}, \quad \dfrac{H_2}{H_1} = \left(\dfrac{N_2}{N_1}\right)^2

Applies hydraulic Pump Affinity Laws to predict changes in discharge flow rate, head pressure, and required motor horsepower when altering pump impeller RPM.

How to Use the Centrifugal Pump Affinity Laws (Speed & Head) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Centrifugal Pump Affinity Laws (Speed & Head) Calculator Example

Input Values:

originalRpmN1:1750
newRpmN2:2100
originalFlowGpmQ1:100
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required GPM.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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