Results 91 to 100 of about 41,738 (228)

WTG Energy Systems' MP1-200 200 kilowatt wind turbine generator [PDF]

, 1979
The preliminary design criteria of the MP1-200 wind turbine are given along with a brief description of the wind turbine generator. Performance and operational experience and cost factors are included.
Spaulding, A. P., Jr.
core   +1 more source

Review on experimental investigation of sediment erosion in hydraulic turbines

Frontiers in Mechanical Engineering
Sediment erosion in turbine materials is caused by various flow phenomena. The study of these phenomena can identify suitable measures to minimize their effect on the turbine.
Rakish Shrestha, Rakish Shrestha, Prithivi Gurung, Prithivi Gurung, Sailesh Chitrakar, Sailesh Chitrakar, Bhola Thapa, Hari Prasad Neopane, Zhiwei Guo, Zhongdong Qian   +9 more
doaj   +1 more source

A Rortex-based method for evaluating hydraulic losses in pump-turbines: a case study of turbine mode under different load conditions

Engineering Applications of Computational Fluid Mechanics
When pump-turbines operate under off-design conditions, complex internal vortex flows often arise, leading to hydraulic instabilities and increased energy losses. Traditional hydraulic loss evaluation methods fail to quantitatively link vortex structures
Lianchen Xu, Yuquan Zhang, Junhui Xu, Xiaotong Yan, Jianjun Feng, Chen Feng, Chengyi Li, Yuan Zheng   +7 more
doaj   +1 more source

Flow characteristics of curved ducts [PDF]

Applied and Computational Mechanics, 2007
Curved channels are very often present in real hydraulic systems, e.g. curved diffusers of hydraulic turbines, S-shaped bulb turbines, fittings, etc. Curvature brings change of velocity profile, generation of vortices and production of hydraulic losses ...
Rudolf P., Desová M.
doaj  

Utility operational experience on the NASA/DOE MOD-0A 200-kW wind turbine [PDF]

The Mod-0A 200 wind turbine was designed and fabricated as part of the Federal Wind Energy Program. Early wind turbine operation and performance data were obtained while gaining initial experience in the operation of large, horizontal axis wind turbines ...
Glasgow, J. C., Robbins, W. H.
core   +1 more source

Review and classification of fretting fatigue test rigs [PDF]

, 2011
There is no standard or generally accepted test rig for fretting fatigue experiments. Therefore, researchers adopt an existing concept, or build a new test rig that meets their specific requirements.
De Baets, Patrick, De Pauw, Jan, De Waele, Wim   +2 more
core  

Load Prediction Control Study of a Pitch Control System for Large Offshore Wind Turbines

Applied Sciences
In recent years, the global demand for renewable energy has been steadily increasing, and offshore wind power generation technology has thus developed rapidly, with the optimization of the performance of the pitch control system, as a key technology to ...
Xuewei Wang, Shibo Liu, Jianghui Chen, Xiangdong Kong, Chao Ai, Gexin Chen   +5 more
doaj   +1 more source

Design of a Simplified Experimental Test Case to Study Rotor–Stator Interactions in Hydraulic Machinery

Energies
Because of the introduction of significant amounts of electricity from intermittent energy, such as solar and wind, on power grids, hydraulic turbines undergo more transient operation with varying rotation speeds.
Benoit Dussault, Yves St-Amant, Sébastien Houde   +2 more
doaj   +1 more source

Review of the Uses of Acoustic Emissions in Monitoring Cavitation Erosion and Crack Propagation

Foundations
Nowadays, hydropower plants are being used to compensate for the variable power produced by the new fluctuating renewable energy sources, such as wind and solar power, and to stabilise the grid.
Ismael Fernández-Osete, David Bermejo, Xavier Ayneto-Gubert, Xavier Escaler   +3 more
doaj   +1 more source

DANUBE HYDROPOWER AND SOME RELATED PROBLEMS [PDF]

Annals: Series on engineering sciences (Academy of Romanian Scientists), 2013
Danube has a length of 2912 km, a 6500 m3/s final discharge and a hydroelectric potential of 42 TWh, the recovery of which necessitate to build approximately 50 power plants.
Mircea POPOVICIU
doaj