Optimising prediction model of centrifugal pump as turbine with viscosity effects
Sign Up to like & getrecommendations! 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.… read more here.
Keywords: pump turbine; centrifugal pump; pump; conversion ... See more keywords
Theoretical, experimental, and numerical study of special impeller used in turbine mode of centrifugal pump as turbine
Sign Up to like & getrecommendations! 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… read more here.
Keywords: turbine; pump turbine; mode; impeller ... See more keywords
Experimental studies of unsteady cavitation at the tongue of a pump-turbine in pump mode
Sign Up to like & getrecommendations! 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… read more here.
Keywords: pump; tongue pump; turbine pump; pump turbine ... See more keywords
Influence of rotational inertia on the runner radial forces of a model pump‐turbine running away through the S‐shaped characteristic region
Sign Up to like & getrecommendations! 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… read more here.
Keywords: pump turbine; radial forces; rotational inertia; region ... See more keywords
Pump-As-Turbine: Characterization as an Energy Recovery Device for the Water Distribution Network
Sign Up to like & getrecommendations! 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... read more here.
Keywords: pump turbine; energy recovery; energy; water ... See more keywords
A review of rotating stall in reversible pump turbine
Sign Up to like & getrecommendations! 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… read more here.
Keywords: reversible pump; rotating stall; pump turbine;
Numerical simulation of cavitating flow in a centrifugal pump as turbine
Sign Up to like & getrecommendations! 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… read more here.
Keywords: pump turbine; mode; centrifugal pump; cavitating flow ... See more keywords
Influences of wear-ring clearance leakage on performance of a small-scale pump-turbine
Sign Up to like & getrecommendations! 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… read more here.
Keywords: pump turbine; pump; leakage; performance ... See more keywords
Internal Mechanism and Improvement Criteria for the Runaway Oscillation Stability of a Pump-Turbine
Sign Up to like & getrecommendations! 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… read more here.
Keywords: turbine; pump turbine; mechanism improvement; runaway oscillation ... See more keywords
Pressure Fluctuations in the S-Shaped Region of a Reversible Pump-Turbine
Sign Up to like & getrecommendations! 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.… read more here.
Keywords: turbine; pump turbine; fluctuations shaped; shaped region ... See more keywords
Numerical Investigation of Flow and Structural Characteristics of a Large High-Head Prototype Pump–Turbine during Turbine Start-Up
Sign Up to like & getrecommendations! 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… read more here.
Keywords: turbine; pump turbine; flow; turbine start ... See more keywords