Study on Suppression of Cavitating Vortex Rope on Pump-Turbines by J-Groove DOI
Shujiao Pang, Baoshan Zhu,

Yunde Shen

et al.

Published: Jan. 1, 2023

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Internal flow mechanism for a pump-turbine operated in pump mode under double humps condition DOI
Yongshun Zeng, Zhaohui Qian, Weixiang Ye

et al.

Science China Technological Sciences, Journal Year: 2025, Volume and Issue: 68(3)

Published: Feb. 14, 2025

Language: Английский

Citations

3
Unstable pressure fluctuations in the vaneless space of high-head reversible pump-turbines – A systematic review DOI
Bhushan R. Rode, Arun Kumar

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 72, P. 108397 - 108397

Published: July 20, 2023

Language: Английский

Citations

30
Co-adjustable guide vane and diffuser vane to improve the energy generation potential of an axial-flow pump as turbine DOI
Duc-Anh Nguyen, Jin‐Hyuk Kim

Energy, Journal Year: 2024, Volume and Issue: 291, P. 130325 - 130325

Published: Jan. 9, 2024

Language: Английский

Citations

15
Study on suppression of cavitating vortex rope on pump-turbines by J-groove DOI
Shujiao Pang, Baoshan Zhu,

Yunde Shen

et al.

Applied Energy, Journal Year: 2024, Volume and Issue: 360, P. 122843 - 122843

Published: Feb. 15, 2024

Language: Английский

Citations

13
Rotor–stator interaction investigations in variable speed reversible pump-turbine at higher head DOI Open Access
Bhushan R. Rode, Arun Kumar

Physics of Fluids, Journal Year: 2024, Volume and Issue: 36(3)

Published: March 1, 2024

Efficiency and grid stability can be improved by variable speed operation using doubly fed induction machine technology for pumped storage plants experiencing significant head variations. With the higher penetration of intermittent renewable energy sources, viz., solar wind, may stabilized operating reversible pump-turbines (RPTs) in off-design conditions. In a turbine mode, RPT is more susceptible to fatigue vibrations when at as result hydraulic instability generated rotor–stator interaction (RSI); therefore, its performance becomes even critical. The powerhouse structural components, including floors columns, could experience intense because this instability. Therefore, it essential investigate RSI RPTs head. These investigations present results numerical analysis associated pressure fluctuations high-head scaled model was used, simulations were executed utilizing shear stress transport k-ω turbulence model. performed best efficiency point conditions having optimized rotational speed. show that main source all RSI, where dominant frequencies are blade passing frequency (9fn) harmonics. It also found lowers RPT.

Language: Английский

Citations

11
Effects of vortex rope formation in draft tube of reversible pump-turbine – A review DOI
Bhushan R. Rode, Arun Kumar

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 99, P. 113250 - 113250

Published: Aug. 8, 2024

Language: Английский

Citations

9
Design techniques for improving energy performance and S-shaped characteristics of a pump-turbine with splitter blades DOI

Jinhong Hu,

Zhigao Zhao, Xianghui He

et al.

Renewable Energy, Journal Year: 2023, Volume and Issue: 212, P. 333 - 349

Published: May 17, 2023

Language: Английский

Citations

20
Optimal hydraulic energy harvesting strategy for PaT installation in Water Distribution Networks DOI Creative Commons
Michele Stefanizzi, Domenico Filannino, Tommaso Capurso

et al.

Applied Energy, Journal Year: 2023, Volume and Issue: 344, P. 121246 - 121246

Published: May 17, 2023

Water Distribution Networks (WDNs) represent a noteworthy field for possible implementation of Small Hydropower (SHP), by replacing Pressure Reduction Valves (PRV) with turbomachines, in particular Pump as Turbines (PaTs), to control and regulate the pressure, while harvesting energy otherwise wasted. Different models were developed predict performance select positioning PaTs maximum recovery but most them neglect practical aspect such as: power grid limitations optimal strategy. In this framework, we intend propose new method PaT, defining its working point, introducing an exploitation coefficient. The proposed methodology is based on experimental results real PaT tested high capacity hydraulic laboratory at Polytechnic University Bari. Firstly, selected commercial centrifugal pump was both turbine modes. Then, three different approaches, Best Efficiency Point (BEP) selection, are described compared terms factor WDN. first consists selecting BEP average flow rate, second one considers probability distribution rate corresponding available energy, whereas latter highest harvesting. By applying production, economic environmental analyses, methodology, third approach, shows remarkable advantage exploited energy. Indeed 60% achieved 334 ton CO2/year avoided. Furthermore, impact electrical motor generation (cut-off) considered. Eventually, useful insights future selection installation discussed.

Language: Английский

Citations

18
Transition of amplitude–frequency characteristic in rotor–stator interaction of a pump-turbine with splitter blades DOI

Jinhong Hu,

Jiebin Yang, Xianghui He

et al.

Renewable Energy, Journal Year: 2023, Volume and Issue: 205, P. 663 - 677

Published: Feb. 4, 2023

Language: Английский

Citations

17
The vortex dynamics characteristics in a pump-turbine: A rigid vorticity analysis while varying guide vane openings in turbine mode DOI
Xiaotong Yan, Kan Kan, Yuan Zheng

et al.

Energy, Journal Year: 2023, Volume and Issue: 289, P. 130086 - 130086

Published: Dec. 20, 2023

Language: Английский

Citations

15