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Small Swiss-made Francis turbine. Francis turbines may be designed for a wide range of heads and flows. This versatility, along with their high efficiency, has made them the most widely used turbine in the world. Francis type units cover a head range from 40 to 600 m (130 to 2,000 ft), and their connected generator output power varies from just ...
The two engineers worked on improving the turbine. And in 1848, Francis and Boyden successfully improved the turbine with what is now known as the Francis turbine. Francis's turbine eclipsed the Boyden turbine in power by 90%. In 1855, Francis published these findings in the "Lowell Hydraulic Experiments". [8]
The original eight Francis turbines served until 1974, when they were replaced by two more powerful turbines, leaving two in place for historic value. The power station is still operating to cover peak demand, run by RWE. In 1998, the Spannungen festival of chamber music has been held in the turbine hall for one week in June. The turbines are ...
Its runner shape was similar to that of a Francis turbine. In 1849, James B. Francis improved the inward flow reaction turbine to over 90% efficiency. He also conducted sophisticated tests and developed engineering methods for water turbine design. The Francis turbine, named for him, is the first modern water turbine. It is still the most ...
The original turbines that powered the generators at the York Haven station were installed between 1903 and 1909 (two turbines per generator, forty turbines in all), and were made by the Poole Engineering & Machine Co. of Baltimore, Maryland. They were Francis-style turbines, based on the design of the inventor and hydraulic engineer, James ...
This page was last edited on 29 January 2012, at 10:45 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.
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Friction losses in a Kaplan turbine are less. The shaft of a Francis turbine is usually vertical (in many of the early machines it was horizontal), whereas in a Kaplan turbine it is always vertical. A Francis turbine's specific speed is medium (60–300 RPM); a Kaplan turbine's specific speed is high (300–1000 RPM).