Results 1 to 10 of about 3,293 (177)

Design procedure for a wind-wheel with self-adjusting blade mechanism [PDF]

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2014
Developed is a wind-wheel design equipped with the self-adjusting blade. The blade is positioned eccentrically to the balance wheel and can freely rotate around its axis. Elaborated is the method of calculating the energy characteristics for a wind-wheel
Gennady A. Oborsky   +2 more
doaj   +10 more sources

Operational characteristics and blade fatigue life analysis of a novel variable-pitch wind turbine under natural wind conditions [PDF]

open access: yesScientific Reports
This study was designed to investigate the nonlinear load behavior and fatigue life of distributed small wind turbines in natural turbulent wind fields through an in-situ field experiment.
Daorina Bao   +6 more
doaj   +2 more sources

Experimental and Numerical Studies on a Single Coherent Blade of a Vertical Axis Carousel Wind Rotor

open access: yesEnergies, 2023
This article presents the results of experimental and numerical studies on a single coherent rotor blade. The blade was designed for a vertical-axis wind turbine rotor with a self-adjusting system and planetary blade rotation.
Marcin Augustyn, Filip Lisowski
doaj   +1 more source

Construction of an experimental plot seeder of wheat planting and compare it by imported one [PDF]

open access: yesJournal of Agricultural Machinery, 2016
Introduction Researchers frequently include multiple cultivars and fertility levels in field experiments. Therefore, the experiments sowing operation must represent a considerable saving in time and labor, compared to hand sowing.
I Eskandari, N Sartipi
doaj   +1 more source

Using crank-crank mechanism to reorient flat blades of vertical wind turbine for improving its performance

open access: yesAlexandria Engineering Journal, 2020
Wind energy is one of the most promising renewable energy resources in terms of cost, environmentally friendly, and sustainability. Accordingly, exploiting its full potential has extensively attracted researchers to cope with the depletion of traditional
Khaled M. Khader, Omayma A. Nada
doaj   +1 more source

Tumor retractor: a simple and novel instrument for brain tumor surgery

open access: yesWorld Journal of Surgical Oncology, 2020
Background It is important to secure a surgical space during brain tumor surgery. One of the commonly used methods is to retract the brain. We hypothesized that the tumor can be retracted and that the normal brain tissue retraction can be minimized ...
Jaejoon Lim   +4 more
doaj   +1 more source

Blade height impact on self-starting torque for Darrieus vertical axis wind turbines

open access: yesEnergy Conversion and Management: X
Self-starting torque (TSelf-starting) presents a significant challenge for Darrieus vertical axis wind turbines (DVAWTs), often necessitating external assistance to initiate rotation. This study addresses the issue by optimizing airfoil design, employing
Hossein Seifi Davari   +4 more
doaj   +1 more source

Application of new superfine multi-component iron-basedcatalyst powder in self-sharpening diamond synthesis

open access: yesJin'gangshi yu moliao moju gongcheng, 2019
A superfine multi-component iron-based catalyst powder with less oxide impurities was prepared by water-gas combined atomization technique. By controlling the type and content of the oxide impurities in the catalyst, the stability of the metallic film at
TAN Suling   +4 more
doaj  

Genetic Algorithm Based Control System Design of a Self-Excited Induction Generator

open access: yesActa Polytechnica, 2006
This paper presents an application of the genetic algorithm (GA) for optimizing controller gains of the Self-Excited Induction Generator (SEIG) driven by the Wind Energy Conversion Scheme (WECS).
A.-F. Attia, H. Soliman, M. Sabry
doaj  
Some of the next articles are maybe not open access.

Performance investigation of self-adjusting blades turbine through experimental study

Energy Conversion and Management, 2019
Abstract In the quest for renewable energy sources and sustainable development, hydrokinetic energy available in marine currents, river currents, water flows and man-made canals should be harnessed. This is particularly true for rural and remote areas, which have access to water but often have poor electricity.
Behrouzi, Fatemeh   +4 more
openaire   +4 more sources

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