Results 11 to 20 of about 6,333 (256)
The acceleration effect of pump as turbine system during starting period [PDF]
Scientific Reports, 2023 In order to reveal the influence of starting acceleration on starting process of a pump as turbine system, this paper carries out a numerical calculation of the three-dimensional viscous unsteady flow of pump as turbine circulating piping system under ...
Yu-Liang Zhang, Jin-Fu Li, Zu-Chao Zhu
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An Improved Autoencoder and Partial Least Squares Regression-Based Extreme Learning Machine Model for Pump Turbine Characteristics [PDF]
Applied Sciences, 2019 Complete characteristic curves of a pump turbine are fundamental for improving the modeling accuracy of the pump turbine in a pump turbine governing system.
Chu Zhang +4 more
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Numerical investigation of flow characteristics in the front and rear chambers of centrifugal pump and pump as turbine [PDF]
Scientific ReportsTo investigate the flow characteristics in front chamber and rear chamber in pump mode and pump as turbine mode, a 3D computational model of a centrifugal pump was established, including the front and rear chamber.
Yu-Liang Zhang +2 more
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Effect of valve opening on starting performance of pump as turbine. [PDF]
PLoS ONE, 2023 The study on transient characteristics of pump as turbines during atypical startup has not been deeply explored yet. In order to reveal the transient characteristics of a small centrifugal pump reversing as turbine during startup process in this paper ...
Yu-Liang Zhang, Jin-Fu Li, You-Qu Zheng
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Numerical prediction of cavitation performance of a prototype pump as turbine based on CFD [PDF]
Scientific ReportsCentrifugal pump as turbine (PAT) is a crucial technology for recovering and utilizing liquid pressure energy, but its cavitation behavior remains insufficiently understood.
Yu-Liang Zhang +5 more
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Engineering Applications of Computational Fluid Mechanics, 2023 Large centrifugal pumps can generate electricity in reverse, reducing the power supply pressure of the power grid. However, S region may occurs during the operation and regulation of the pump as a steam turbine (PAT). The S region can cause unstable unit
Shijie Yang +6 more
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Journal of Sustainable Development of Energy, Water and Environment Systems, 2021 Compared to a traditional turbine (Kaplan, Francis, Pelton), pumps operated as turbine are a good alternative for micro hydroelectric power plants thanks to their low cost and easy availability.
Jonathan Graciano-Uribe +2 more
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Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2022 The use of a pump as opposed to a turbine/pump as turbine (PAT) for off-grid electrification applications is one of the important ways to be considered in efforts to equalize electrical energy in Indonesia.
Sarid Mejiartono +2 more
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Journal of Marine Science and Engineering, 2023 As a core component of pumped storage power plants for hydro and marine power storage, this paper investigates the mechanism of pressure pulsation fluctuations under different load conditions to improve the efficiency and operational stability of the ...
Jiahao Lu +4 more
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Geometrical effects on performance and inner flow characteristics of a pump-as-turbine: A review
Advances in Mechanical Engineering, 2020 A pump-as-turbine is a hydraulic machine that can operate as a pump and turbine at the same time. Pump-as-turbine happens to be the most appropriate method for meeting the world’s energy demands, particularly in rural and isolated areas of a country ...
Stephen Ntiri Asomani +4 more
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