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Published in 2017 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2016.09.002
Abstract: Abstract Performance conversion of a centrifugal pump as turbine from the known performance curves in pump mode is vital important in pump selection, power generation and investment assessment, especially under low Reynolds number operation conditions.…
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Keywords:
pump turbine;
centrifugal pump;
pump;
conversion ... See more keywords
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Published in 2017 at "Energy"
DOI: 10.1016/j.energy.2017.04.156
Abstract: The pump-as-turbine (PAT) technique is limited by its undesirable performance and narrow range of high efficiency due to the mismatch between the conventional backward-curve centrifugal impellers and the turbine running condition. This study aims to…
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Keywords:
turbine;
pump turbine;
mode;
impeller ... See more keywords
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Published in 2021 at "Renewable Energy"
DOI: 10.1016/j.renene.2021.06.055
Abstract: Abstract The paper deals with the cavitation at tongue of a pump-turbine in pump mode, including the typical patterns, unsteady behaviors, and the influence on pump performance and fluid-borne noise. Visualization experiments were conducted under…
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Keywords:
pump;
tongue pump;
turbine pump;
pump turbine ... See more keywords
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Published in 2020 at "Iet Renewable Power Generation"
DOI: 10.1049/iet-rpg.2019.1476
Abstract: To enhance the power grid's stability and safety, pumped-storage power stations (PSPSs) have to keep themselves stable and safe strictly. However, instabilities happen frequently in some PSPSs due to the S-shaped characteristics of pump-turbines. When…
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Keywords:
pump turbine;
radial forces;
rotational inertia;
region ... See more keywords
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Published in 2017 at "Journal of Hydraulic Engineering"
DOI: 10.1061/(asce)hy.1943-7900.0001316
Abstract: AbstractThe distribution of water is an energy intensive process in which potential to recover energy currently wasted exists, via the installation of microhydro energy recovery systems. Pump-as-tu...
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Keywords:
pump turbine;
energy recovery;
energy;
water ... See more keywords
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Published in 2017 at "Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science"
DOI: 10.1177/0954406216640579
Abstract: Currently, operations of reversible pump turbines in pumped hydro energy storage plant suffer great instability problems in the well-known S-shaped characteristic regions, leading to the failure of start, significant pressure fluctuations, and severe vibrations of…
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Keywords:
reversible pump;
rotating stall;
pump turbine;
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Published in 2018 at "Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering"
DOI: 10.1177/0954408916686126
Abstract: In this study, the cavitating flow and cavitation performance are studied by employing the computational fluid dynamics method in the turbine mode of a centrifugal pump at part-load, best efficiency, and over-load points. The flow…
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Keywords:
pump turbine;
mode;
centrifugal pump;
cavitating flow ... See more keywords
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Published in 2019 at "Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy"
DOI: 10.1177/0957650919865052
Abstract: Wear-ring clearance leakage would affect performance of pump-turbine significantly. In this paper, the variation of the leakage and efficiency of flat ring seal and labyrinth seal are numerically studied on one pump-turbine when the width…
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Keywords:
pump turbine;
pump;
leakage;
performance ... See more keywords
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Published in 2018 at "Applied Sciences"
DOI: 10.3390/app8112193
Abstract: The runaway oscillation process of the pump-turbine in a high head pumped-storage power plant is usually unstable. The root cause of its instability is still unclear. In this paper, its internal mechanism and the improvement…
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Keywords:
turbine;
pump turbine;
mechanism improvement;
runaway oscillation ... See more keywords
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Published in 2017 at "Energies"
DOI: 10.3390/en10010096
Abstract: Numerical simulations were performed to investigate pressure fluctuations in the S-shaped region of a pump-turbine model. Analyses focused on pressure fluctuations in the draft tube and in the gap between the guide vanes and runner.…
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Keywords:
turbine;
pump turbine;
fluctuations shaped;
shaped region ... See more keywords
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Published in 2023 at "Energies"
DOI: 10.3390/en16093743
Abstract: Transient processes that occur in pumped storage power plants can cause high-pressure conditions, which in turn can result in vibrations in the pump–turbine structure and even damage to structural components. It is therefore crucial to…
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Keywords:
turbine;
pump turbine;
flow;
turbine start ... See more keywords