Results 101 to 110 of about 5,160 (221)

Flexible operation of Francis turbines

, 2023
With the planned cuts in emissions, more of the electric energy will have to come from renewable sources. Two of the largest potential sources are wind- and solar, which have the downside of also being intermittent and non-dispatchable. Since the electricity production must match the consumption, other energy producers in a grid must increase their ...
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Investigation of Channel Vortices in Francis Turbines

IOP Conference Series: Earth and Environmental Science, 2016
In this paper the characteristics of one type of channel vortex and the effect of different parameters on this channel vortex have been investigated experimentally with the aid of high speed photography. The results show that locations of the channel vortices move from near the hub down to near the band with the increase n11 or the decrease Q11 ...
M LIU, L J ZHOU, Z W WANG, D M LIU, Y Z ZHAO   +4 more
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CAVITATION EROSION IN FRANCIS TURBINES

Municipal economy of cities
The phenomenon of secondary flow is a global problem that causes cavitation erosion in hydraulic equipment. Cavitation is a phenomenon of localised corrosion of the metal surface leading to instability and highly uneven flow behaviour with a consequent excessive noise, vibration, and decreased efficiency in Francis, Kaplan, and other turbines.
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Francis turbine model performance characteristic determination

, 2020
U ovom radu opisane su vodne turbine koje su se koristile nekada i vodne turbine koje se koriste danas. Na umanjenom modelu Francisove turbine radili smo ispitivanja momenta, snage i korisnosti turbine.
Belančić, Mirna
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Study of the use of a micro hydro in knockdown container completed with a cylindrical form housing of francis hydraulic turbine to support the development program of energy self-sustainability for remote and isolated areas in Indonesia

E3S Web of Conferences, 2017
With an intention to reduce the consumption of energy from fossil fuels and the CO2 emission in relation with the climate change solution, Indonesian Government has targeted that the role of the New and Renewable Energy (NRE) resources reaches at least ...
Kamal Samsul, Prajitno, Pardadi Janu
doaj   +1 more source

Predição teórica das características hidrodinâmicas de turbinas Francis [PDF]

, 2023
This work presents a methodology for the performance prediction of Francis turbine based on mean streamline analysis. The performance prediction takes into account only the overall dimensions of the Francis turbine and also the losses correlations for ...
JIMENEZ, Ruth Katiuska Granja
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Francis turbine runner design

, 2008
The graduation theses are focused on reconstruction of the small hydro-electric power station Harta. Design of detailed runner blading based on the parameters of the given location is part of the reconstruction.
Žák, Radim
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Optimization Of Gamm Francis Turbine Runner

, 2011
Nowadays, the challenge in hydraulic turbine design is the multi-objective design of turbine runner to reach higher efficiency. The hydraulic performance of a turbine is strictly depends on runner blades shape. The present paper focuses on the application of the multi-objective optimization algorithm to the design of a small Francis turbine runner. The
Sh. Derakhshan, A. Mostafavi
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Study of vortex generators on Francis turbine runner for variable speed operation [PDF]

In the present context, the use of energy from renewable sources is evermore growing to meet the goal of being carbon neutral and reduce the impact on climate change.
Kayastha, Atmaram
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Analysis of Fatigue Failure of Francis Turbine Runner at Derbendikhan Hydropower Station

Sulaimani Journal for Engineering Sciences, 2017
Fatigue failures in Francis turbine runner are frequently occurred in hydropower plants, causing unexpected plant downtime and considerable financial loss. Decades of operational experience have shown that turbine runners develop fatigue cracks in areas,
Raza Abdulla Saeed
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