What is a Francis turbine?

A Francis turbine is a reaction-type turbine having a runner with a large number of fixed buckets, usually nine or more, to which the water is supplied in a whirling radial direction. It can be designed for operating heads ranging from 50 to 2,000 feet.

The Francis turbine was invented by James Bicheno Francis, a pioneer in early waterpower development. 

FURTHER READING“Francis and His Turbine,” Hydro Review, Volume 8, No. 1, February 1989, pages 24-28.

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