Another advantage future on this two screen system is that if the wind turbine is used on a storing energy system, once the batteries are charge full and there is not storing capacity left, the motor of the second screen will be activated – as in the situation of too severe weather conditions- deploying the second screen shielding the blade assembly from the wind slowing the rotation gradually to a standstill, thus adding a durability to the apparatus by reducing the wear of the mechanical parts. http://uapatents.com/6-78408-vitrove-koleso-vitroenergetichno-ustanovki-z-gorizontalnoyu-vissyu-obertannya-rotora.html Quality components for long-term use. Let’s look at how a VAWT works and how it stacks up against the horizontal-axis wind turbine. A second screen is rotatably engaged with the housing and configured for selectively moving between a retracted position, wherein the second screen is positioned substantially adjacent to the first screen such that the catch portion of the blades assembly circumference is exposed, and a deployed position, wherein the second screen is rotated away from the first screen for partially or totally shielding the catch portion from the wind. Any efficiency losses in regards to all blades not producing lift is taken account of during the design phase. At the moment we have new ideas to add to this inventions but unfortunately the shortage of funds to invest is a mayor handicap and we are looking for possible investors on the project. A conventional HAWT must first be generally oriented into the wind before the blades can rotate. In addition, field experiments have confirmed that vertical-axis wind turbines can interact synergistically to enhance the total power production when placed in close proximity. The parasitic energy losses are an issue, but should be proportional to the available wind energy. See my related post Invest carefully; wind energy ‘innovations’ are rarely kosher for the questions to ask about any innovative piece of wind generation, especially if someone is asking you to put money into it. http://uapatents.com/9-88805-energetichna-ustanovka-sbp-2.html. And, are there good reasons for more developers to consider VAWT models? On our case that hazard is reduced to cero. This further enlarges the effective volume of wind contributing to the turbine power. Or email@example.com Spain 639172005. View There are over 300,000 three-blade, utility-scale horizontal-axis wind turbines generating power today. Contact Aurelio Izquierdo: firstname.lastname@example.org Spain 727727172 One designer has produced a small vertical wind turbine that sold over 4,000 units in around 60 countries since 2007, and used patents to set up technical barriers. Therein, the need for a slowing down system is unnecessary, consequently minimizing the wear of the apparatus and extending the periods of services needed. by MOHAMMAD MOHIBBUL BASHAR (Under the Direction of Mosfequr Rahman) ABSTRACT . In recent years wind turbines have become an increasingly important source of renewable energy and are being used by many countries as part of a strategy to reduce reliance on fossil fuels. They remain popular for small-scale and residential installations where tight spaces limit the kind of renewables that can be installed. As the popularity of wind turbines grows, so do the design options. There are three basic advantages of a VAWT over HAWT and just as many drawbacks. Betz calculated that the maximum power that could be gained from the wind was 59.3% of its total energy. This is ultimately why wind-energy developers have stuck with the HAWT. EOLO 3000 Vertical Axis Wind Turbine Generator. HAWT’s mounted on off-shore jacket structures must sustain a geometrically more severe cost increase with water depth than do petroleum production platforms for the same rate of depth increase because of the confounding need for taller and bigger machines to justify the water depth cost growth. Though Horizontal Axis Wind Turbine (HAWT) is more popular but needs high France’s Vertiwind will eventually go offshore. It all comes down to the long term wind regimes, sea state conditions, water depths and saline impacts of the off shore wind farm. These turbines are usually more efficient than vertical-axis units. It seems as if every week, a new wind generator innovation is unveiled, sometimes in technology blogs, sometimes in TV segments, once even on TED Talks. 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