Results 131 to 140 of about 250 (179)

Performance measurements on a Pelton turbine model

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2011
Pelton hydraulic turbines are impulse-type turbomachines commonly used in hydroelectric plants with medium-to-high water head and in various energy recovery applications. The aim of the present work is to provide detailed performance measurements on a Pelton turbine model, along with the design and geometrical dimensions of its runner/buckets and ...
F G Stamatelos   +2 more
exaly   +2 more sources

Experimental studies of the jet of a Pelton turbine

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2007
The jet discharged from the nozzle of a Pelton turbine is a key item of such hydropower systems and its precise shape and position are highly relevant to the optimum design of the turbine buckets to match the incoming flow. Experimental investigations, primarily with laser Doppler anemometry, have been used to identify the important fluid dynamic ...
Zh Zhang, M Casey
exaly   +2 more sources

Hydraulic Design of Pelton Turbines

2016
For the hydraulic design of a Pelton turbine, the net head on the pressure side and the desired flow rate are two fundamental parameters. They determine the available hydraulic power supply and therefore the size of the turbine. The design of a Pelton turbine starts with the dimensioning of the Pelton wheel, the choice of the rotational speed, and the ...
openaire   +1 more source

Multi-jet Pelton Turbines

2016
In mountain areas where plenty of water is available, Pelton turbines are often designed with two to maximum six injectors (Fig. 19.1). Of concern in the design is the minimum displacement, i.e., the offset angle between two adjacent injectors. The jet is allowed to enter the bucket only when the bucket is relieved from the loading by the upstream jet.
openaire   +1 more source

Numerical analyses of a cavitating pelton turbine

2013
Erosive wear of hydro turbine runners is a complex phenomenon, which depends upon many parameters and which leads to a decrease of the performance in time and/or in extreme cases to the rotor mechanical failure. Consistently, the study of this wearing process is an important step to improve the impeller design, to avoid or minimize the rise of ...
PAVESI, GIORGIO   +3 more
openaire   +2 more sources

Working Principle of Pelton Turbines

2016
In hydropower plants with Pelton turbines, the available hydraulic energy exists as potential energy, which is measured in the form of the geodetic height difference between the upper level of water in the reservoir and the turbines in the machine house of a lower altitude.
openaire   +1 more source

Numerical Simulation of Jet in a Pelton Turbine

1996
In case of predicting the performance of prototype Pelton turbine from a model test, a scale effect has been ignored so far. However, it is getting clear that there is an outstanding deviation from a classical similarity laws. The direction of the deviation is completely inverse against the case of reaction turbines, namely, the performance of ...
Tomoyasu Nonoshita   +3 more
openaire   +1 more source

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