# What does a pump curve tell you about a pump?

## What does a pump curve tell you about a pump?

Pump curves are essentially data about a given pump’s ability to produce flow against certain head. When you’re reading a curve, the pump’s flow rate will be on the top and bottom and its height to push is on the sides.

## What is the difference between pump curve and system curve?

In general, a pump is used to overcome frictional head loss in piping systems as well as system elevation changes between system boundaries (i.e., static head). The system curve helps quantify the resistance in a system due to friction and elevation change over the range of flows.

What are the different types of pump curves?

Pump curves fall into several categories and can represent different aspects of the pump’s performance. The most common types of pump curves include: pump family selection, the manufacturer’s published curve, certified pump curve and system curve.

### How do you calculate the flow rate of a centrifugal pump?

Determine the pump flow rate, head, and power requirements if the pump speed is increased to 3600 rpm. It is possible to develop the characteristic curve for the new speed of a pump based on the curve for its original speed….Pump Laws.

n = speed of pump impeller (rpm)
P = pump power (kW)

### What is a centrifugal pump curve?

A pump performance curve indicates how a pump will perform in regards to pressure head and flow. Typical centrifugal pumps will show an increased flow rate as head pressure decreases. The curve also shows the shut off head or the head that the pump would generate if operating against a closed valve.

What is fan system curve?

• The fan curve represents the performance of a. fan. It shows the relationship between the. flow rate and pressure created by the rotation of a fan impeller.

## Why is NPSH important?

The purpose of NPSH is to identify and avoid the operating conditions which lead to vaporisation of the fluid as it enters the pump – a condition known as flashing. In a centrifugal pump, the fluid’s pressure is at a minimum at the eye of the impeller.