vertical wind turbine Articles

  • 2nd Generation Wind Turbines

    2nd generation wind turbines are better, more effective, than its predecessor, and succeed in generating more electricity with smaller wind volumes. These wind turbines incorporate two newer technologies, that make them more efficient. Self starting vertical blades and magnetically suspended bearings, which makes them superior to any other. The self starting vertical blades provide advantages ...


    By SolarPanels4u

  • The VGOT Darrieus wind turbine

    We present the actual state of development of a non-conventional new vertical-axis wind turbine. The concepts introduced here involve the constructive aspects of variable-geometry oval-trajectory (VGOT) Darrieus wind turbines. The key feature of a VGOT machine is that each blade slides over rails mounted on a wagon instead of rotating around a central vertical axis. Each wagon contains its own ...


    By Inderscience Publishers

  • Air concentrating nozzles: a promising option for wind turbines

    Although the use of wind turbines has become necessary in many parts of the world, the actual developments in wind turbines do not concern countries where the average wind speeds are low. The paper introduces a new vertical axis wind rotor using a convergent nozzle for low wind speed areas. This paper brings a detailed theoretical and practical study of air concentrating nozzle and the optimum ...


    By Inderscience Publishers

  • Finite element structural study of the VGOT wind turbine

    We analyse the implementation of the finite element method to simulate the structural behaviour of the blade-wagons of variable-geometry oval-trajectory (VGOT) Darrieus wind turbines. The key feature of a VGOT machine is that each blade, instead of rotating around a central vertical axis, slides over rails mounted on a wagon formed by a tubular reticulated structure supported by standard train ...


    By Inderscience Publishers

  • The effect of ocean waves on offshore wind turbines

    The Ocean has a varying surface roughness where the roughness length is determined by the characteristics of the waves. In this paper, a method is established where the roughness length of the ocean is calculated from the wind speed and the fetch length. The fetch length depends on the wind direction and a case study is performed for a wind turbine exposed to wind blowing in two opposite ...


    By Inderscience Publishers

  • Analysis of vertical wind shear in the Southern Great Plains and potential impacts on estimation of wind energy production

    This paper describes the analysis of near-surface wind speeds in Western Oklahoma. The goals of this research are to characterise the nocturnal low-level jet (LLJ) in the region, and to assess the impact wind variability, vertical shear and the LLJ on wind energy calculations. Results show the seasonal variability in wind characteristics as well as in the vertical wind shear, and also illustrate ...


    By Inderscience Publishers

  • Measuring Offshore Wind Resources

    To select the right offshore wind site, estimate the future energy output of a wind farm, and determine the best layout for the turbines, project developers must conduct wind resource assessment (WRA) campaigns on site. This is a critical phase of the successful development of wind farms. WRA campaigns on terrestrial sites have traditionally been performed using meteorological towers equipped ...


    By Renewable NRG Systems

  • Feasibility Study of Wind Power in India - 2014

    This is an Investor Series report which provides the information on: Wind Turbine Design and Characteristics Permits and Licensing Site Selection Criteria Economics and Financial Model Operations and Maintenance Modern Trends in Wind Farms Case Study in Wind Sector Grid Connection ...


  • Comparative study of the performances of twisted two-bladed and three-bladed airfoil shaped H-Darrieus turbines by computational and experimental methods

    The vertical axis H-Darrieus turbines are simple in construction, self-starting, omni-directional, and self-regulating at all wind speeds. A comparative study of the performances of twisted two-bladed and three-bladed airfoil shaped H-Darrieus turbines was made. The models of the turbines were designed, fabricated, and tested in a subsonic wind tunnel. The power coefficients (C ...


    By Inderscience Publishers

  • Museum of Science – Boston - Case Study

    Each year, millions of visitors come to the Museum of Science – in Boston, only Fenway Park draws more people. This nationally-renowned center dates to the mid-1800s as a resource to teach and demonstrate how technology and science affects daily living. The museum enjoys a high-profile location along the Charles River, between Boston and Cambridge. Facilities include an IMAX theater and a 2 ...

  • Micro Hydro Systems A basic overview of a hydro system with components explained

    If you have a suitable site, harnessing the energy in a stream or creek can be the most cost-effective way to make renewable electricity. Compared to the sun and wind’s variability, a stream’s flow is relatively consistent, making microhydro-electric system output the most predictable of all the renewable energy (RE) electrical systems. Hydro resources are also the most site specific, ...

  • Look what’s cooking in the world of renewable energy

    The solar and wind innovations that got us where we are today — and those waiting in the wings — point to a hopeful future. Inside a sprawling single-story office building in Bedford, Mass., in a secret room known as the Growth Hall, the future of solar power is cooking at more than 2,500 °F. Behind closed ...


    By Ensia

  • Resourcing for climate change

    Climate change is scientifically, widely recognised to be happening as a result of the anthropogenic input of greenhouse gases (GHG) into the atmosphere. Consequently we need to look at adaptation and mitigation to limit the social, environmental and economic impacts. Allen & York are market leading environmental recruitment specialists with 15 years experience and an expanding Energy team ...


    By Allen & York Ltd

  • Using Lidar for WRA Campaigns: Your Questions Answered (Part I)

    In the course of conversations with wind developers new to Lidar technology, a number of questions seem to come up regularly. In this and future blog posts, I will attempt to answer these questions in some detail to benefit others who might be pondering them as well. Two very practical questions have to do with how WINDCUBE® ...


    By Renewable NRG Systems

  • Hydro power myths Explains why various schemes such as a pool pumps or rain gutters or pumping water to a tank will not work

    Making electricity from falling water can seem like magic, and that’s led to lots of misconceptions. Here, we’ll separate fact from fiction when it comes to what microhydro systems can and cannot do. Residential-scale microhydro-electric systems have the reputation of being the holy grail of home renewableenergy (RE) systems. While they lack some of the hype, magic, and bling of ...

  • Visualizing the stories data can tell

    Scientists and technologists are turning numbers about everything from condors to ocean-floor contours into visual representations of environmental issues. We’re living in an era of Big Data, but too often it’s nothing more than a fire hose of numbers and data sets that most would have difficulty understanding. Increasingly, though, entities such as non-governmental ...


    By Ensia

  • Can the Solar Hourglass serve as a CSP landmark?

    A CSP project proposal has won first place in the 2014 Land Art Generator Initiative (LAGI) competition, but can the design make it beyond paper? By Heba Hashem October was an eventful month for Santiago Muros Cortés. The Argentina-based architect impressed the jury in Copenhagen with his plan for a Solar Hourglass that ...


    By FCBI Energy

  • Stainless Steel Sector Gets Its Sights on Sustainability

    Sustainable development continues to filter down into the business world. In April, the British Stainless Steel Association held its first conference on the theme. Delegates heard that stainless steel may have a vital role in solving environmental problems in applications such as renewable energy projects and more fuel-efficient vehicles. But they were also told that regulatory and competitive ...

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