ETA - LOW-WIND EFFICIENT TURBINA BLADES
ETA - high efficiency WEC blades
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
VISION
VISION
Our aim is to improve overall wind farm efficiency through improved blade profiles, materials, technology.
We believe that it is possible to achieve greater efficiency even at low wind speed conditions from any wind turbine while maintaining high efficiency under conditions of greater wind.
At the same time we believe it is possible to reduce the loads on the blade, on the gearbox and on the tower under any wind
condition using special manufacturing techniques and design methods specifically used for advanced composite materials in aero elastic range.
Our products fit the need to achieve more from less windy sites, or to significantly improve the production of old sites with deteriorated blades.
Our mission is to support our customer extract the maximum value from their sites or existing wind farms partnering with them from small development opportunities up to large scale reblading programmes.
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
EFFICIENT
ETA
- HIGH EFFICIENCY WEC-BLADES
ETA develops, manufactures and sells new blades
suitable for the next wind farm generation needs:
Funding fathers are all coming from top management / entrepreneurial experiences in wind, marine and
lower cost (vs lower incentives), lower wind (vs aerospace R&D, Quality assurance, Production
market saturation), lower impact (vs. deteriorated and Design, where the use of software for design social acceptance)
ETA aims to support large reblading programmes developing the right blade for any specific site.
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and simulations and advanced composite materials is essential.
ETA - LOW-WIND EFFICIENT TURBINA BLADES
composite materials is essential where the use of
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
TURBINA
THE NEED TO IMPROVE EFFICIENCY OF WIND TURBINES The European wind landscape is moving towards a less attractive / increasingly difficult phase for developers and operators:
High yield European sites availability saturating
Incentives schemes becoming less remunerating and, at the same time
Governments pushing for grid parity and innovation to bring wind energy to competition
Commercial turbines designed for steady wind / max efficiency in excess of 10 m/s. At low
wind regimes and outside the specific design conditions, very low performances
Social acceptance / NIMBY and logistics (transport) often limit the use of large rotors,
witch instead is the current answer to all the above
In summary, “standard� profiles of turbines are no longer adequate to all purposes.
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
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Availability of sites where to build new wind In red, the areas that can be developed in Italy due to increased efficiency. In blue those currently developable.
The sameconditions are replicated in Europe farms, that are not currently developed developers and operators:
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
KEY
KEY TARGETED TECHNICAL DIFFERENTIATING FACTORS Produce energy at low wind speed with profiles specifically designed for those conditions
Weight ratio due to the use of materials and advanced technology allowing lower speed cut-in, shifting the power curve on the left with significant yield increase
Noise reduction generated by the choice of profiles with minimal noise impact and use of winglets for the specific destruction of vortex separation.
Blade de-forming according to main axis in relation to wind intensity in a self-adaptive mode, designing with “Complex Composite Structures� typical of the Aerospace
Stiffness of the entire blade structure obtained through the use of advanced materials (Carbon, Kevlar and Nomex honeycomb), for a better use of the wind strength to improve the overall efficiency of the system Surface treatment through the use of nano-technology (lower friction / increase efficiency)
Process technology transfers typical of aerospace and marine, based on the use of advanced composite materials
Design concept and product based on modularity to provide the possibility to create multi-part blades coupled together, making easier logistics and transport, minimizing cost and environmental impacts. The use of advanced composite materials will make parts of the junction safer by reducing the weight plus increasing stiffness
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
KEY FACTORS
Low cut-in and high efficiency with low wind High efficiency even in high wind conditions Loads reductions
Total Cost Reduction
Product Reliability
Product Integration
SOLUTION
SPECIFIC KNOW HOW
Innovative custom profiles
Aerospace and aeronautical application on design of new airfoil Wind Tunnel test and wings prototype
Auto-Adaptive profiles and geometries
Advanced design with composite materials Special design model for aero-elastic wind blade deformations
Lightness
Advanced composite manufacturing processes Nano technologies and surface treatments for friction reduction
High rigidity in
Advanced composite manufacturing processes Use of high modulus fiber, resin and core materials
Reduction of inertial masses
Auto - Adaptive profiles and geometries Logistic Cost Reduction
Manufacturing Cost Reduction
Advanced design with composite materials
Aero elastic models developed specifically for wind blades Modular Blade - Special flanges
Standard parts, modular components skilled manpower Availability of production areas with access to waterways
Structural reliability
Chemical Physical Mechanical properties of composites materials Experimental testing of every type of composite materials
Wind farm integration
Ten years experience in wind farm development and constructions
Design Model reliability
Aero elastic tests on scale models in wind tunnel. Sensorization for analysis of deformation of the blades
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
TECHNOLOGY
TECHNOLOGY DETAILS Our technology is mature and our fifteen years experience in the advanced composites world,
Even in a challenging reblading programme, the ability to “understand” the site and its characteristics,
with more than a hundred carbon-based products and analyse the performance of the existing manufactured (each of these over thirty meters turbines is relevant to achieve the best result from a long) has an extensive successful track record.
customised blade.
Experience and technologies will be necessary
matured in the aeronautical and advanced naval
to take the performance of the blades to the next
Applying the philosophy, design and technology
industries to wind blades manufacturing allows ETA
level: in low wind conditions a design with advanced to achieve maximum efficiency from wind turbines –
composites allows to save weight and at the same and create a significant advantage for wind-farmers. time increases stiffens and keeps under control the
Methodologies are such that we don’t expect to
efficiency. In the opposite situation, with strong wind
performed in in our laboratory show that structures
aero-elastic deformation to obtain maximum airfoil
conditions, it contributes to reduce more than 20% the critical loads on the turbine.
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increase manufacturing costs. Initial experiences and laminations reach top performances however at floor cost.
ETA - LOW-WIND EFFICIENT TURBINA BLADES
TECHNOLOGY
DETAILS
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
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ETA - LOW-WIND EFFICIENT TURBINA BLADES
FURTURES
FURTURES OOur top competence in composites materials, the professional european team create for design,
our opportunity in the production area will develop a special blades for increase the efficency of wind turbine with a consistent reduction of the loads on the gearbox and on the tower.
ETA will create a new interesting opportunity on the europeean market in low wind conditions areas. Beyond our Vision, ETA targets to achieve a leading position in the “next wind wave�, where wind farms will be required to compete on the free electricity markets thus needing to perform according to a world without incentives and with the lowest possible cost per kWh.
Our top competences in composites, design, profiles, our blend of experiences, will enable ETA to always be on the next level and produce the best wind turbine blades.
ETA will be the partner of choice for wind farmers willing to exploit unknown or marginal areas, and with those which will need to improve their site performance.
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