Results 71 to 80 of about 632 (187)
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
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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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Energies, 2019 With the improvement in energy structures, the safe and stable operation of hydropower units is becoming the most important issue for electric grids. To expand the stable operating range of a 200 m head Francis turbine, splitter blades were designed to ...
Yun Jia +4 more
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CAVITATION EROSION IN FRANCIS TURBINES
Municipal economy of citiesThe 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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Numerical Study on the Dynamic Behavior of a Francis Turbine Runner Model with a Crack
Energies, 2018 Crack appearance in the blade is the most common type of fatigue damage in Francis turbines. However, it is sometimes difficult to detect cracks in time using the current monitoring system, even when they are very large.
Ming Zhang +4 more
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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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Sediment erosion in Francis turbines
, 2009 Sediment erosion is a major challenge for run-of-river power plants, especially during flood periods. Due to the high content of hard minerals such as quartz and feldspar carried in the river, substantial damage is observed on the turbine components. Material is gradually removed, thus the efficiency of the turbine decreases and the operating time of ...
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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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Analysis on cause of erosion of guide vane of high‐head Francis turbine in sandy river
Energy Science & EngineeringThe Kizilsu River Basin in China is located in the desert Gobi area with high sediment content and high hardness. After 4798h operation, the maintenance of a high‐head Francis turbine in this basin found that the guide vane was seriously worn, and even ...
Haiqi Wang +7 more
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ComputationFrancis turbines are renowned for their high efficiency and adaptability across a wide range of head and discharge conditions. However, internal mechanical friction losses (IMFLs), resulting from rotational frictional resistance between the rotating ...
Otibh M. M. Abubkry +5 more
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