Francis - Low Head

Francis - Low Head

Hundreds of low head mills and weirs are spread across the lowlands of the United Kingdom and Europe. These sites were used for agro-processing and to operate industrial shops for many years. The Nautilus low head designs are intended to operate in open flumes and tap this energy source to power homes and small businesses. Most low head mill sites started with water wheels and changed to water turbines as more power and higher shaft speeds were required to drive modern machinery and generators. These turbines were installed with vertical power shafts to get equipment above flood levels in open flumes beneath the mill (see drawing below). In cases where only the weir remains, simple open flumes can be built from poured concrete or large plastic or steel tubes.

Nautilus offers three Francis Turbine options to meet different flow and power requirements. These designs are supplied in both regulated and unregulated configurations. These turbines are typically installed in open flumes with a head range from 1 meter to a maximum of 3.7 meters, in power ranges from a few hundred watts to 3000 watts.