Pump Selection Calculator — Select the Right Pump for Your Application

Pump Selection Calculator

Calculate the optimal pump specifications for your application. Determine pump type, power, flow rate, head requirements, and efficiency based on your system parameters.

Step 1: System Requirements

Understanding Pump Head

Total Dynamic Head (TDH) is the total equivalent height that a fluid is to be pumped, taking into account friction losses in the pipe. It includes static head, friction head, and pressure head.

Step 2: Pump & Efficiency

75%
90%
$0.12

About Pump Efficiency

Pump efficiency is the ratio of hydraulic power delivered to the fluid to the mechanical power input at the pump shaft. Higher efficiency pumps consume less energy for the same output, reducing operating costs.

Pump Selection Results

Summary
Pump Comparison
Breakdown

Required Pump Power

3.2 kW
Based on 100 GPM at 50 ft head with 75% pump efficiency
Flow Rate
100 GPM
Total Head
50 ft
Hydraulic Power
2.4 kW
Overall Efficiency
67.5%

Pump Type Comparison

Pump Type Typical Efficiency Power Required Annual Energy Cost

Power Consumption Breakdown

Pump Power Formula

Power (kW) = (Flow × Head × Specific Gravity) / (367 × Pump Efficiency)

To calculate pump power requirement: Multiply flow rate (m³/h) by head (m) and fluid specific gravity, then divide by 367 times pump efficiency percentage. For imperial units: Power (HP) = (Flow × Head × Specific Gravity) / (3960 × Pump Efficiency).

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