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Turbines are sometimes differentiated on the basis of the type of inlet flow, whether the inlet velocity is in axial direction, radial direction or a combination of both. . The Francis turbine is a mixed hydraulic turbine (the inlet velocity has Radial and tangential components) while the Kaplan turbine is an axial hydraulic turbine (the inlet velocity has only axial velocity componen
The Kaplan turbine was an evolution of the Francis turbine. Its invention allowed efficient power production in low-head applications which was not possible with Francis turbines. [2] The head ranges from 10 to 70 metres (33 to 230 ft) and the output ranges from 5 to 200 MW. Runner diameters are between 2 and 11 metres (6 ft 7 in and 36 ft 1 in).
A Francis turbine consists of the following main parts: Spiral casing : The spiral casing around the runner of the turbine is known as the volute casing or scroll case. Throughout its length, it has numerous openings at regular intervals to allow the working fluid to impinge on the blades of the runner.
Rainpower AS is a Norwegian company which develops, designs, manufactures and sells equipment for hydropower electricity generation. The company provides Pelton, Francis, and Kaplan turbines, as well as pump turbines, small hydropower plants, turbine governor, oil pressure systems, valve controllers, exciters, valves, gates, pipes, and other products and services related to the hydropower ...
The tangential water inflow of the mill race made the submerged horizontal wheel in the shaft turn like a true turbine. [1] A Francis turbine runner, rated at nearly one million hp (750 MW), being installed at the Grand Coulee Dam, United States. A propeller-type runner rated 28,000 hp (21 MW) The earliest known water turbines date to the Roman ...
While a turbine transfers energy from a fluid to a rotor, a compressor transfers energy from a rotor to a fluid. [1] [2] It is an important application of fluid mechanics. [3] These two types of machines are governed by the same basic relationships including Newton's second Law of Motion and Euler's pump and turbine equation for compressible ...
Taprogge GmbH is a medium-sized company based in Wetter, Germany. [1] The company is named after founding brothers Ludwig and Josef Taprogge. Founded in 1953, [2] the company is known for its tube cleaning systems [3] for steam turbine condensers, [4] [5] heat exchangers and debris filters [5] for water-cooled shell and tube heat exchangers and condensers.
Kaplan turbine: This turbine is a propeller-type turbine which has adjustable blades to achieve efficiency over a wide range of heads and flows. The Kaplan can be used at low to medium heads (1.5–20 metres) and medium to high flows (3 m 3 /s–30 m 3 /s). For higher flows multiple turbines can be used.
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