Pumps and turbines
Pumps are a means of adding energy to water. They convert fuel energy such as petrol or diesel into useful water energy using combustion engines or electric motors. In the pipeline problem in Chapter 4 the energy to drive water was obtained from a reservoir located high above the town (Figure 8.1). The energy line drawn from the reservoir to the town showed energy available. Adding a pump to this system increases the available energy and this raises the energy line close to the pump. In this way the discharge from the reservoir to the town can be increased.