Extension of Operating Range in Pump-Turbines. Influence of Head and Load [PDF]
Energies, 2017 Due to the increasing share of new renewable energies like wind and solar in the generation of electricity the need for power regulation and energy storage is becoming of paramount importance.
Carme Valero +5 more
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The pump as a turbine: A review on performance prediction, performance improvement, and economic analysis [PDF]
HeliyonPumps as Turbines (PATs) are known for their ability to replace conventional turbines in Pico/micro-hydropower plants. However, selecting a suitable pump and estimating its performance in reverse mode is a challenging task. The overall efficiency of PATs
Abdulbasit Nasir +2 more
doaj +2 more sources
A new method for regulating Pelton turbine based on ejection of discharged flow [PDF]
E3S Web of Conferences, 2023 Hydropower plants (HPPs) contribute a significant share of Russia’s electricity generation. With the prospects of developing this sector and harnessing the hydroenergy potential, it is necessary to consider methods for modernizing hydroelectric ...
Liamasov A K, Denisov K E, Biriulin M A
doaj +1 more source
Archimedean screw as fish-friendly turbines for harnessing hydropower potential [PDF]
E3S Web of Conferences, 2021 Hydraulic energy is one of the most important sources of renewable energy today. It is also a complementary source to other renewable energy sources, being the only one that offers an important nonpolluting storage capacity (through pump storage ...
Purece Cristian, Corlan Lilica
doaj +1 more source
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
doaj +1 more source
Feasibility studies of a converter-free grid-connected offshore hydrostatic wind turbine [PDF]
, 2020 Owing to the increasing penetration of renewable power generation, the modern power system faces great challenges in frequency regulations and reduced system inertia.
Lin, Shuyue, Tong, Xin, Zhao, Xiaowei
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Energies, 2020 In load rejection transitional processes in pumped-storage plants (PSPs), the process of closing pump turbines, including guide vane (GVCS) and ball valve closing schemes (BVCS), is crucial for controlling pulsating pressures and water hammer.
Jiawei Ye +4 more
doaj +1 more source
An Analysis of the Minimum Pressure Coefficient Criterion Applied to the Axial-flow Pump Design – A Case Study for a Circulating Water Channel [PDF]
Journal of Applied Fluid Mechanics, 2023 An analysis of the minimum pressure coefficient on the suction side of the axial-flow pump blades is presented as a design criterion. A Matlab code is used to improve the computer aided design process efficiency and quality.
R. V. Correia Ramalho +2 more
doaj +1 more source
Internal Flow Phenomena of Two-Way Contra-Rotating Axial Flow Pump-Turbine in Pump Mode under Variable Speed [PDF]
Journal of Applied Fluid Mechanics, 2022 This paper investigated the variable speed operation of a two-way contra-rotating axial flow pump–turbine in pump mode. When counter-rotating impellers operate at the same speed, a significant difference exists in the shaft power of the two impellers ...
C. An +5 more
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Steady state simulation and exergy analysis of supercritical coal-fired power plant with CO₂ capture [PDF]
, 2015 Integrating a power plant with CO₂ capture incurs serious efficiency and energy penalty due to use of energy for solvent regeneration in the capture process.
Kelsall, Greg +2 more
core +1 more source