Chapter Six: Pumping Systems

1 Chapter Six: Pumping Systems

1.1 1.1 Introduction

This section describes the water supply pumping systems. Brief presentation of types of pumps are provided. Also, it describes how to design and select pumps for a water supply system. Lastly, it gives key considerations in their installation. It is important to understand the different types of pumps, design procedures, source of pumping power, motor starting, machine protections and economics of electric power systems. However, more details on pump types and their functioning are given in Appendix E.

1.2 1.2 Rationale

The main goal of any pumping plant and pumping system is to lift water from a lower to a higher level.

1.3 1.3 Common Types of Pumps used in water supply

There are two main pump types used in the water supply projects which are different in design and application. Table 6.1 shows the most commonly used pump types. Further details of each type of pumps can be seen in Appendix E of this DCOM manual.

1.3.1 Table 6.1: Most Commonly Used Pump Types

Main Types	Sub-types	Specific types
Rotordynamic	Centrifugal	Single-stage
		Multi-stage shaft driven
		Multi-stage submersible
	Peripheral	Axial flow
		Mixed flow
		Turbine
		Submersible
Positive displacement	Reciprocating	Suction (shallow well)
	Example	Lift (deep well)
	Rotary	Helical Rotor