Results 61 to 70 of about 805,835 (276)

Inexactness of the Hydro-Thermal Coordination Semidefinite Relaxation

, 2017
Hydro-thermal coordination is the problem of determining the optimal economic dispatch of hydro and thermal power plants over time. The physics of hydroelectricity generation is commonly simplified in the literature to account for its fundamentally ...
Martins, L. S. A., Paredes, M.
core   +1 more source

Optimal Nanoparticle Size in SiO₂/Al₂O₃‐Water Nanofluids for Enhancing Intercooler Thermal Enhancement: A Conjugate Heat Transfer Study

Energy Science &Engineering, EarlyView.
The simulation shows that the comprehensive heat transfer effect of using nanofluids as cooling liquid is greater than 1.30 nm SiO2/water and 40 nmAl2O3/water nanofluids have the best heat transfer enhancement effect, while all nanofluids of 30 nm Al2O3/water have the best heat transfer enhancement effect.
Bing Dai, Jingqi Yin, Juhui Chen, Tao Xu, Michael Zhurakov, Siarhei Lapatsin, Wenrui Jiang   +6 more
wiley   +1 more source

A Novel Pitch Control System of a Large Wind Turbine Using Two-Degree-of-Freedom Motion Control with Feedback Linearization Control

Energies, 2016
Pitch Control plays a significant role for a large wind turbine. This study investigates a novel robust hydraulic pitch control system of a large wind turbine.
Ching-Sung Wang, Mao-Hsiung Chiang
doaj   +1 more source

Advances in research on impulse hydro‐turbine technology

River, EarlyView.
Abstract To accelerate the development of impulse hydro‐turbines and support the efficient utilization of hydropower resources in Southwest China, this paper examines the background, historical development, and research progress of impulse hydro‐turbines.
Xiaochao Li, Ye Zhou, Hao Zhang, Guanglei Xiao, Yanwei Li, Zhongxin Gao, Zhiyang Lu, Shangqi Li   +7 more
wiley   +1 more source

On the thermal dynamic behaviour of the helium-cooled DEMO fusion reactor [PDF]

, 2019
The EU-DEMO conceptual design is being conducted among research institutions and universities from 26 countries of European Union, Switzerland and Ukraine. Its mission is to realise electricity from nuclear fusion reaction by 2050.
Barucca L., Ciattaglia S., Di Maio P. A., Moscato I.   +3 more
core   +1 more source

Research on a power smoothing control strategy for energy storage hydraulic wind turbines

Energy Science & Engineering, 2023
To solve the problem of large output power fluctuations in wind turbines and improve grid adaptability, a hydraulic energy storage system is introduced in traditional hydraulic wind turbines.
Wei Gao, Yankang Zhang, Lin Zhang, Chao Ai, Lijuan Chen   +4 more
doaj   +1 more source

Dynamic Simulation of Starting and Emergency Conditions of a Hydraulic Unit Based on a Francis Turbine

Energies, 2022
The Francis hydro-turbine is a typical nonlinear system with coupled hydraulic, mechanical, and electrical subsystems. It is difficult to understand the reasons for its operational failures, since the main cause of failures is due to the complex ...
Andrey Achitaev, Pavel Ilyushin, Konstantin Suslov, Sergey Kobyletski   +3 more
doaj   +1 more source

Controls of Hydraulic Wind Turbine [PDF]

MATEC Web of Conferences, 2016
In this paper a hydraulic wind turbine generator system was proposed based on analysis the current wind turbines technologies. The construction and principles were introduced. The mathematical model was verified using MATLAB and AMsim. A displacement closed loop of swash plate of motor and a speed closed loop of generator were setup, a PID control is ...
Zhang Yin, Kong Xiangdong, Hao Li, Ai Chao   +3 more
openaire   +2 more sources

Advancing Sustainable Development Through Exports of Clean Energy Products From Emerging Asian Economies: A Poisson Pseudo Maximum Likelihood Estimation Approach

Sustainable Development, EarlyView.
ABSTRACT The promotion of clean energy is critical to achieving sustainable development. This study investigates the factors that affect the exports, trade potential, and revealed comparative advantage (RCA) of clean energy products (CEPs) in the emerging Asian economies (EAEs).
Arvind Goswami, Rajesh Kumar Jangir, Vijay Kumar Chattu   +2 more
wiley   +1 more source

Valve exploiting the principle of a side channel turbine

EPJ Web of Conferences, 2017
The article deals with a side channel turbine, which can be used as a suitable substitute for a pressure reducing valve. Reducing valves are a source of hydraulic losses. The aim is to replace them by a side channel turbine.
Jandourek Pavel, Habán Vladimír, Pochylý František, Fic Miloslav   +3 more
doaj   +1 more source