Results 21 to 30 of about 4,019 (262)

Study on the Effect of the Guide Vane Opening on the Band Clearance Sediment Erosion in a Francis Turbine

Journal of Marine Science and Engineering, 2022
Sediment erosion is a negative phenomenon for the water turbine. The purpose of this paper is to study the effect of the guide vane opening on the particle motion and sediment erosion in the band chamber using the Euler–Lagrangian approach.
Xijie Song, Xuhui Zhou, Huating Song, Jianhua Deng, Zhengwei Wang   +4 more
doaj   +1 more source

A varying comprehensive hydropower coefficient for medium/long-term operation of a single reservoir

Hydrology Research, 2020
In medium/long-term reservoir operation, the hydropower output is calculated from k × q × h, where q is the power discharge, h is the water head, and k is the comprehensive hydropower coefficient. k indicates the conversion efficiency from water power to
Wenting Gong, Pan Liu, Lei Cheng, He Li, Zhikai Yang   +4 more
doaj   +1 more source

HYDROPOWER PLANT

KNOWLEDGE - International Journal, 2019
Ocean waves are an immense, unused source of energy. Since global attention is nowadays constantly being drawn to the fact that the level of CO2 is rising, creating the so called “greenhouse effect”, and influencing further climate changes, the focus on generating electricity from renewable sources forces itself as an important area of future research.
openaire   +1 more source

Interface‐Mediated Catalysis for Improved Hydrogen Storage in Reactive Hydride Composites

Advanced Materials, EarlyView.
Catalyst–hydride interfaces are engineered in Co@C‐ and Ni@C‐modified 2LiH + MgB2 reactive hydride composites to accelerate hydrogen uptake and release. Multiscale scattering, in‐situ synchrotron radiation powder x‐ray diffraction and density functional theory calculations reveal the structural and electronic origin of the catalytic enhancement ...
Yuanyuan Shang, Pawan Kumar Soni, Han Ge, Weijie Yang, Fahim Karimi, Thi Thu Le, Tamás Simon, Michael Fröba, Jitendra Mata, Joshua King, Hai‐Wen Li, Thomas Klassen, Claudio Pistidda   +12 more
wiley   +1 more source

Intelligent fault diagnosis and localization of hydropower station equipment using multi-source data fusion and deep residual networks

Discover Artificial Intelligence
Reliable fault diagnosis is important for rotating equipment used in energy infrastructure, including hydropower turbine–generator systems. A hydropower-oriented framework is presented that combines a physics-constrained simulation-assisted augmentation ...
Chenyang Zhu, Yuguo Zhou, Zhongming Dong, Wenbing Zhu, Tianhu Sun, Hong Cao   +5 more
doaj   +1 more source

Atomic Defects in Layered Transition Metal Dichalcogenides for Sustainable Energy Storage and the Intelligent Trends in Data Analytics

Advanced Science, EarlyView.
This review comprehensively summarizes the atomic defects in TMDs for their applications in sustainable energy storage devices, along with the latest progress in ML methodologies for high‐throughput TEM data analysis, offering insights on how ML‐empowered microscopy facilitates bridging structure–property correlation and inspires knowledge for precise ...
Zheng Luo, Ying Yang, Zizhen Fu, Fengqi Liu, Susu Fang, Kele Xu, Shanshan Wang   +6 more
wiley   +1 more source

An investigation into the practical application of the physical principle to ensure the safety of hydraulic structures during the construction of Novokarachayevskaya small hydropower plants on the Kuban River [PDF]

E3S Web of Conferences
Many countries around the world have embraced small hydropower as a stable component of their energy sector. Small HPPs in Russia generate approximately 2.2 billion kWh/year, and experts estimate their technical potential to be around 382 billion kWh ...
Bakshtanin Alexander, Zhukova Tatiana
doaj   +1 more source

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

Advanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen, Bapan Biswas, Apinya Ngoipala, Julia Wiktor, Ujjwal Pal, Shalini Singh   +5 more
wiley   +1 more source

Diffusion characterization of SF6 decomposed gas in GIL based on computational fluid simulation

Discover Applied Sciences
Gas-insulated transmission lines (GIL) are widely used in electric power systems due to their excellent insulation performance, high transmission capacity, and high reliability. Elucidating the diffusion characteristics of SF6 decomposed gas in GIL is of
Binghui Lei, Lijiang Ma, Yang Liu, Mingtao Yu, Shiyi Chen, Zongzhen Yang, Zuwei Guo, Feng Wang   +7 more
doaj   +1 more source

Models for a hydropower plant: a review

Linköping Electronic Conference Proceedings, 2023
Hydro Power plant (HPP), being one of the most convenient options for power generation, has been modelled considering very wide aspects of their application. A model is simply a mathematical representation of a system and it may serve different purposes like dynamic simulation of hydro power, energy systems modelling involving policy making, condition ...
Tajana Nepal, Diwakar Bista, Thomas Øyvang, Roshan Sharma   +3 more
openaire   +1 more source