Blade System Design Studies Volume Ii

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Blade System Design Studies Volume II

Author : Dayton A. Griffin
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis Blade System Design Studies Volume II by : Dayton A. Griffin

Download or read book Blade System Design Studies Volume II written by Dayton A. Griffin and published by . This book was released on 2004 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the U.S. Department of Energy's Wind Partnerships for Advanced Component Technologies (WindPACT) program, Global Energy Concepts, LLC is performing a Blade System Design Study (BSDS) concerning innovations in materials, processes and structural configurations for application to wind turbine blades in the multi-megawatt range. The BSDS Volume I project report addresses issues and constraints identified to scaling conventional blade designs to the megawatt size range, and evaluated candidate materials, manufacturing and design innovations for overcoming and improving large blade economics. The current report (Volume II), presents additional discussion of materials and manufacturing issues for large blades, including a summary of current trends in commercial blade manufacturing. Specifications are then developed to guide the preliminary design of MW-scale blades. Using preliminary design calculations for a 3.0 MW blade, parametric analyses are performed to quantify the potential benefits in stiffness and decreased gravity loading by replacement of a baseline fiberglass spar with carbon-fiberglass hybrid material. Complete preliminary designs are then presented for 3.0 MW and 5.0 MW blades that incorporate fiberglass-to-carbon transitions at mid-span. Based on analysis of these designs, technical issues are identified and discussed. Finally, recommendations are made for composites testing under Part I1 of the BSDS, and the initial planned test matrix for that program is presented.

Blade System Design Studies Volume I

Author :
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (684 download)

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Book Synopsis Blade System Design Studies Volume I by :

Download or read book Blade System Design Studies Volume I written by and published by . This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the U.S. Department of Energy's Wind Partnerships for Advanced Component Technologies (WindPACT) program, Global Energy Concepts LLC (GEC) is performing a study concerning innovations in materials, processes and structural configurations for application to wind turbine blades in the multi-megawatt range. The project team for this work includes experts in all areas of wind turbine blade design, analysis, manufacture, and testing. Constraints to cost-effective scaling-up of the current commercial blade designs and manufacturing methods are identified, including self-gravity loads, transportation, and environmental considerations. A trade-off study is performed to evaluate the incremental changes in blade cost, weight, and stiffness for a wide range of composite materials, fabric types, and manufacturing processes. Fiberglass/carbon fiber hybrid blades are identified as having a promising combination of cost, weight, stiffness and fatigue resistance. Vacuum-assisted resin transfer molding, resin film infision, and pre-impregnated materials are identified as having benefits in reduced volatile emissions, higher fiber content, and improved laminate quality relative to the baseline wet lay-up process. Alternative structural designs are identified, including jointed configurations to facilitate transportation. Based on the results to date, recommendations are made for further evaluation and testing under this study to verify the predicted material and structural performance.

Blade System Design Study. Part II, Final Project Report (GEC).

Author :
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Blade System Design Study. Part II, Final Project Report (GEC). by :

Download or read book Blade System Design Study. Part II, Final Project Report (GEC). written by and published by . This book was released on 2009 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the U.S. Department of Energy's Low Wind Speed Turbine program, Global Energy Concepts LLC (GEC)1 has studied alternative composite materials for wind turbine blades in the multi-megawatt size range. This work in one of the Blade System Design Studies (BSDS) funded through Sandia National Laboratories. The BSDS program was conducted in two phases. In the Part I BSDS, GEC assessed candidate innovations in composite materials, manufacturing processes, and structural configurations. GEC also made recommendations for testing composite coupons, details, assemblies, and blade substructures to be carried out in the Part II study (BSDS-II). The BSDS-II contract period began in May 2003, and testing was initiated in June 2004. The current report summarizes the results from the BSDS-II test program. Composite materials evaluated include carbon fiber in both pre-impregnated and vacuum-assisted resin transfer molding (VARTM) forms. Initial thin-coupon static testing included a wide range of parameters, including variation in manufacturer, fiber tow size, fabric architecture, and resin type. A smaller set of these materials and process types was also evaluated in thin-coupon fatigue testing, and in ply-drop and ply-transition panels. The majority of materials used epoxy resin, with vinyl ester (VE) resin also used for selected cases. Late in the project, testing of unidirectional fiberglass was added to provide an updated baseline against which to evaluate the carbon material performance. Numerous unidirectional carbon fabrics were considered for evaluation with VARTM infusion. All but one fabric style considered suffered either from poor infusibility or waviness of fibers combined with poor compaction. The exception was a triaxial carbon-fiberglass fabric produced by SAERTEX. This fabric became the primary choice for infused articles throughout the test program. The generally positive results obtained in this program for the SAERTEX material have led to its being used in innovative prototype blades of 9-m and 30-m length, as well as other non-wind related structures.

Blade System Design Studies

Author : Dayton A. Griffin
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (54 download)

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Book Synopsis Blade System Design Studies by : Dayton A. Griffin

Download or read book Blade System Design Studies written by Dayton A. Griffin and published by . This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Blade System Design Studies Phase II

Author :
Publisher :
ISBN 13 :
Total Pages : 93 pages
Book Rating : 4.:/5 (727 download)

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Book Synopsis Blade System Design Studies Phase II by :

Download or read book Blade System Design Studies Phase II written by and published by . This book was released on 2008 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Parametric Study for Large Wind Turbine Blades

Author : TPI Composites, Inc
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (56 download)

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Book Synopsis Parametric Study for Large Wind Turbine Blades by : TPI Composites, Inc

Download or read book Parametric Study for Large Wind Turbine Blades written by TPI Composites, Inc and published by . This book was released on 2002 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Blade System Design Studies

Author : Dayton A. Griffin
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (56 download)

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Book Synopsis Blade System Design Studies by : Dayton A. Griffin

Download or read book Blade System Design Studies written by Dayton A. Griffin and published by . This book was released on 2004 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Innovative Design Approaches for Large Wind Turbine Blades

Author : TPI Composites, Inc
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (521 download)

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Book Synopsis Innovative Design Approaches for Large Wind Turbine Blades by : TPI Composites, Inc

Download or read book Innovative Design Approaches for Large Wind Turbine Blades written by TPI Composites, Inc and published by . This book was released on 2003 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Wind Turbine Blade Design and Materials

Author : Povl Brondsted
Publisher : Woodhead Publishing
ISBN 13 : 0081030088
Total Pages : 516 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Advances in Wind Turbine Blade Design and Materials by : Povl Brondsted

Download or read book Advances in Wind Turbine Blade Design and Materials written by Povl Brondsted and published by Woodhead Publishing. This book was released on 2023-01-14 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Wind Turbine Blade Design and Materials, Second Edition, builds on the thorough review of the design and functionality of wind turbine rotor blades and the requirements and challenges for composite materials used in both current and future designs of wind turbine blades. Reviews the design and functionality of wind turbine rotor blades Examines the requirements and challenges for composite materials used in both current and future designs of wind turbine blades Provides an invaluable reference for researchers and innovators in the field of wind

MARE-WINT

Author : Wiesław Ostachowicz
Publisher : Springer
ISBN 13 : 3319390953
Total Pages : 432 pages
Book Rating : 4.3/5 (193 download)

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Book Synopsis MARE-WINT by : Wiesław Ostachowicz

Download or read book MARE-WINT written by Wiesław Ostachowicz and published by Springer. This book was released on 2016-08-30 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a holistic, interdisciplinary overview of offshore wind energy, and is a must-read for advanced researchers. Topics, from the design and analysis of future turbines, to the decommissioning of wind farms, are covered. The scope of the work ranges from analytical, numerical and experimental advancements in structural and fluid mechanics, to novel developments in risk, safety & reliability engineering for offshore wind.The core objective of the current work is to make offshore wind energy more competitive, by improving the reliability, and operations and maintenance (O&M) strategies of wind turbines. The research was carried out under the auspices of the EU-funded project, MARE-WINT. The project provided a unique opportunity for a group of researchers to work closely together, undergo multidisciplinary doctoral training, and conduct research in the area of offshore wind energy generation. Contributions from expert, external authors are also included, and the complete work seeks to bridge the gap between research and a rapidly-evolving industry.

Blade Design and Analysis for Steam Turbines

Author : Murari P. Singh
Publisher : McGraw Hill Professional
ISBN 13 : 0071635734
Total Pages : 384 pages
Book Rating : 4.0/5 (716 download)

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Book Synopsis Blade Design and Analysis for Steam Turbines by : Murari P. Singh

Download or read book Blade Design and Analysis for Steam Turbines written by Murari P. Singh and published by McGraw Hill Professional. This book was released on 2011-03-22 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: THE LATEST STEAM TURBINE BLADE DESIGN AND ANALYTICAL TECHNIQUES Blade Design and Analysis for Steam Turbines provides a concise reference for practicing engineers involved in the design, specification, and evaluation of industrial steam turbines, particularly critical process compressor drivers. A unified view of blade design concepts and techniques is presented. The book covers advances in modal analysis, fatigue and creep analysis, and aerodynamic theories, along with an overview of commonly used materials and manufacturing processes. This authoritative guide will aid in the design of powerful, efficient, and reliable turbines. COVERAGE INCLUDES: Performance fundamentals and blade loading determination Turbine blade construction, materials, and manufacture System of stress and damage mechanisms Fundamentals of vibration Damping concepts applicable to turbine blades Bladed disk systems Reliability evaluation for blade design Blade life assessment aspects Estimation of risk

Carbon Design Studies for Large Blades

Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (958 download)

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Book Synopsis Carbon Design Studies for Large Blades by :

Download or read book Carbon Design Studies for Large Blades written by and published by . This book was released on 2013 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Design Studies for Twist-coupled Wind Turbine Blades

Author : James Locke
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (56 download)

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Book Synopsis Design Studies for Twist-coupled Wind Turbine Blades by : James Locke

Download or read book Design Studies for Twist-coupled Wind Turbine Blades written by James Locke and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Wind Turbine Blade Design and Materials

Author : Povl Brondsted
Publisher : Elsevier
ISBN 13 : 0857097288
Total Pages : 485 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Advances in Wind Turbine Blade Design and Materials by : Povl Brondsted

Download or read book Advances in Wind Turbine Blade Design and Materials written by Povl Brondsted and published by Elsevier. This book was released on 2013-10-31 with total page 485 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind energy is gaining critical ground in the area of renewable energy, with wind energy being predicted to provide up to 8% of the world’s consumption of electricity by 2021. Advances in wind turbine blade design and materials reviews the design and functionality of wind turbine rotor blades as well as the requirements and challenges for composite materials used in both current and future designs of wind turbine blades. Part one outlines the challenges and developments in wind turbine blade design, including aerodynamic and aeroelastic design features, fatigue loads on wind turbine blades, and characteristics of wind turbine blade airfoils. Part two discusses the fatigue behavior of composite wind turbine blades, including the micromechanical modelling and fatigue life prediction of wind turbine blade composite materials, and the effects of resin and reinforcement variations on the fatigue resistance of wind turbine blades. The final part of the book describes advances in wind turbine blade materials, development and testing, including biobased composites, surface protection and coatings, structural performance testing and the design, manufacture and testing of small wind turbine blades. Advances in wind turbine blade design and materials offers a comprehensive review of the recent advances and challenges encountered in wind turbine blade materials and design, and will provide an invaluable reference for researchers and innovators in the field of wind energy production, including materials scientists and engineers, wind turbine blade manufacturers and maintenance technicians, scientists, researchers and academics. Reviews the design and functionality of wind turbine rotor blades Examines the requirements and challenges for composite materials used in both current and future designs of wind turbine blades Provides an invaluable reference for researchers and innovators in the field of wind energy production

Technical Abstract Bulletin

Author :
Publisher :
ISBN 13 :
Total Pages : 850 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Technical Abstract Bulletin by :

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Technical Information Indexes

Author : United States. Naval Air Systems Command
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Technical Information Indexes by : United States. Naval Air Systems Command

Download or read book Technical Information Indexes written by United States. Naval Air Systems Command and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aerodynamic Design of Wind Turbine Blades Utilising Nonconventional Control Systems

Author : I. Kade Wiratama
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Aerodynamic Design of Wind Turbine Blades Utilising Nonconventional Control Systems by : I. Kade Wiratama

Download or read book Aerodynamic Design of Wind Turbine Blades Utilising Nonconventional Control Systems written by I. Kade Wiratama and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of the significant growth of wind turbines in size, blade load control has become the main challenge for large wind turbines. Many advanced techniques have been investigated aiming at developing control devices to ease blade loading. Individual pitch control system, adaptive blades, trailing edge microtabs, morphing aerofoils, ailerons, trailing edge flaps, and telescopic blades are among these techniques. Most of the above advanced technologies are currently implemented in, or are under investigation to be utilised, for blade load alleviation. The present study aims at investigating the potential benefits of these advanced techniques in enhancing the energy capture capabilities rather than blade load alleviation. To achieve this goal the research is carried out in three directions: (i) development of a simulation software tool suitable for wind turbines utilising nonconventional control systems, (ii) development of a blade design optimisation tool capable of optimising the topology of blades equipped with nonconventional control systems, and (iii) carrying out design optimisation case studies with the objective of power extraction enhancement towards investigating the feasibility of advanced technologies, initially developed for load alleviation of large blades, for power extraction enhancement. Three nonconventional control systems, namely, microtab, trailing edge flap and telescopic blades are investigated. A software tool, AWTSim, is especially developed for aerodynamic simulation of wind turbines utilising blades equipped with microtabs and trailing edge flap as well as telescopic blades. As part of the aerodynamic simulation of these wind turbines, the control system must be also simulated. The simulation of the control system is carried out via solving an optimisation problem which gives the best value for the controlling parameter at each wind turbine run condition. Developing a genetic algorithm optimisation tool which is especially designed for wind turbine blades and integrating it with AWTSim, a design optimisation tool for blades equipped with nonconventional control system is constructed. The design optimisation tool, AWTSimD, is employed to carry out design case studies. The results of design case studies reveal that for constant speed rotors, optimised telescopic blades are more effective than flaps and microtabs in power enhancement. However, in comparison with flap and microtabs, telescopic blades have two disadvantages: (i) complexity in telescopic mechanism and the added weight and (ii) increased blade loading. It is also shown that flaps are more efficient than microtabs, and that the location and the size of flaps are key parameters in design. It is also shown that optimisation of the blade pretwist has a significant influence on the energy extraction enhancement. That is, to gain the maximum benefit of installing flaps and microtabs on blades, the baseline blades must be redesigned.