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Experimental Investigation Of Power Requirements For Wind Turbines Electrothermal Anti Icing Systems
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Book Synopsis Experimental Investigation of Power Requirements for Wind Turbines Electrothermal Anti-icing Systems by : Oloufemi Fakorede
Download or read book Experimental Investigation of Power Requirements for Wind Turbines Electrothermal Anti-icing Systems written by Oloufemi Fakorede and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric icing effects is a critical issue for wind farms in Nordic regions; it is responsible for production losses, shortens the equipment's lifetime, and increases safety risks. Electrothermal anti-icing is one of the existing techniques of ice mitigation, and its energy consumption for wind turbines has been numerically investigated over the years but never fully validated experimentally in the literature. In this work, we aimed to determine the energy consumption for anti-icing systems based solely on experimental investigations. Our methodology is to quantify the energy required to protect a custom-built NACA 0012 airfoil from ice buildup in a wind tunnel. The results are extrapolated to a full-scale wind turbine.
Book Synopsis Design, Modeling and Testing of an Electro-Thermal Ice Protection System for Wind Turbines by : David Getz
Download or read book Design, Modeling and Testing of an Electro-Thermal Ice Protection System for Wind Turbines written by David Getz and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: There has been a substantial growth in the total installed wind energy capacity worldwide, especially in China and the United States. Icing difficulties have been encountered depending on the location of the wind farms. Wind turbines are adapting rotor ice protection approaches used in rotorcraft applications to reduce aerodynamic performance degradation related to ice formation. Electro-thermal heating is one of the main technologies used to protect rotors from ice accretion and it is one of the main technologies being considered to protect wind turbines. In this research, an anti-icing configuration using electro-thermal heating was explored to find optimum power density requirements to keep the rotor blade free of ice at all times. The objective of these experiments were to identify the feasibility of the power requirements from the stake holders and determine an initial power density for the de-icing approach. The electro-thermal heater system located on the spinning wind turbine representative blade sections were powered through a slip-ring. The wind turbine sections were scale models of the 80% span region of a generic 1.5 MW wind turbine blade. The icing cloud impact velocity was matched with a 1.5 MW wind turbine at full production. Three icing conditions were selected for this research: Light, Medium and Severe. Light icing conditions were created using clouds at -8C with a 0.2 g/m3 liquid water content (LWC) and water droplets of 20 m median volumetric diameter (MVD). Medium icing condition clouds had a LWC of 0.4 g/m3 and 20 m MVD, also at -8C. Severe icing conditions had an LWC of 0.9 g/m3 and 35 m MVD at -8C. Experimental anti-icing results were compared with LEWICE, a NASA developed analytical heat transfer software. The average output temperature discrepancy between the suction and pressure sides of the airfoil were 39.5% and 11.1%, respectively. The correlation coefficient of the pressure-side output temperature and power density showed a positive correlation of 0.9516. The anti-icing configuration with the allocated power requirements was deemed unfeasible. This thesis then discusses the design process required to develop a de-icing ice protection system (ice is allowed to accrete to then be removed) for wind turbines and a design procedure was developed. Initially, ice accretion thickness gradients along the span of the rotor blade for light, medium and severe icing conditions were collected. Ice accretion rates along the span of the representative full-scale turbine blade in the severe icing condition ranged from 1.125 mm/min to 1.85 mm/min. Given the maximum power available for the de-icing system (100 kW), heating zones were determined along the span and the chord of the blade. The maximum available power density for each span-wise heater section was 0.385 W/cm2. The heating sequence started at the tip of the blade, to allow de-bonded ice to shed off along the span of the rotor blade due to centrifugal forces. Given the continuity of the accreted ice, heating a zone could de-bond the ice over that specific zone, but the ice formation could not detach from the blade as it would be cohesively connected to the ice over its adjacent inboard zone. The research determined the critical minimum ice thickness required to shed the accreted ice mass with a given amount of power availability by not only melting the ice interface over the zone, but also creating sufficient tensile forces to break the cohesive ice forces between two adjacent heating zones. The quantified minimum ice thickness to overcome ice cohesive forces were obtained for all identified icing conditions. The minimum ice thicknesses required for effective shedding at 26.7%, 44.4% and 62.2% of the span were 7.2mm, 5mm and 4mm, respectively. The digitized ice areas of these thicknesses were used to calculate the centrifugal force at each heater section. The experiment data was critical in the design of a time sequence controller that allows consecutive de-icing of heating zones along the span of the wind turbine blade with the allocated power.
Book Synopsis Wind Turbines by : Abdel Ghani Aissaoui
Download or read book Wind Turbines written by Abdel Ghani Aissaoui and published by BoD – Books on Demand. This book was released on 2016-07-27 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable energies constitute excellent solutions to both the increase of energy consumption and environment problems. Among these energies, wind energy is very interesting. Wind energy is the subject of advanced research. In the development of wind turbine, the design of its different structures is very important. It will ensure: the robustness of the system, the energy efficiency, the optimal cost and the high reliability. The use of advanced control technology and new technology products allows bringing the wind energy conversion system in its optimal operating mode. Different strategies of control can be applied on generators, systems relating to blades, etc. in order to extract maximal power from the wind. The goal of this book is to present recent works on design, control and applications in wind energy conversion systems.
Book Synopsis Wind Turbine Icing Physics and Anti-/De-Icing Technology by : Hui Hu
Download or read book Wind Turbine Icing Physics and Anti-/De-Icing Technology written by Hui Hu and published by Academic Press. This book was released on 2022-08-30 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind Turbine Icing Physics and Anti-/De-Icing Technology gives a comprehensive update of research on the underlying physics pertinent to wind turbine icing and the development of various effective and robust anti-/de-icing technology for wind turbine icing mitigation. The book introduces the most recent research results derived from both laboratory studies and field experiments. Specifically, the research results based on field measurement campaigns to quantify the characteristics of the ice structures accreted over the blades surfaces of utility-scale wind turbines by using a Supervisory Control and Data Acquisition (SCADA) system and an Unmanned-Aerial-Vehicle (UAV) equipped with a high-resolution digital camera are also introduced. In addition, comprehensive lab experimental studies are explored, along with a suite of advanced flow diagnostic techniques, a detailed overview of the improvements, and the advantages and disadvantages of state-of-the-art ice mitigation strategies. This new addition to the Wind Energy Engineering series will be useful to all researchers and industry professionals who address icing issues through testing, research and industrial innovation. Covers detailed improvements and the advantages/disadvantages of state-of-the-art ice mitigation strategies Includes condition monitoring contents for lab-scale experiments and field tests Presents the potential of various bio-inspired icephobic coatings of wind turbine blades
Book Synopsis Handbook of Numerical Simulation of In-Flight Icing by : Wagdi George Habashi
Download or read book Handbook of Numerical Simulation of In-Flight Icing written by Wagdi George Habashi and published by Springer Nature. This book was released on 2024-01-12 with total page 1278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Handbook of Numerical Simulation of In-Flight Icing covers an array of methodologies and technologies on numerical simulation of in-flight icing and its applications. Comprised of contributions from internationally recognized experts from the Americas, Asia, and the EU, this authoritative, self-contained reference includes best practices and specification data spanning the gamut of simulation tools available internationally that can be used to speed up the certification of aircraft and make them safer to fly into known icing. The collection features nine sections concentrating on aircraft, rotorcraft, jet engines, UAVs; ice protection systems, including hot-air, electrothermal, and others; sensors and probes, CFD in the aid of testing, flight simulators, and certification process acceleration methods. Incorporating perspectives from academia, commercial, government R&D, the book is ideal for a range of engineers and scientists concerned with in-flight icing applications.
Book Synopsis 2023 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2023) Proceedings by : Song Fu
Download or read book 2023 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2023) Proceedings written by Song Fu and published by Springer Nature. This book was released on with total page 1991 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical and Field Experimental Investigation of Wind Turbine Dynamic De-icing Process by :
Download or read book Numerical and Field Experimental Investigation of Wind Turbine Dynamic De-icing Process written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Proceedings of the 17th Annual Conference of China Electrotechnical Society by : Jian Li
Download or read book The Proceedings of the 17th Annual Conference of China Electrotechnical Society written by Jian Li and published by Springer Nature. This book was released on 2023-03-31 with total page 1411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers outstanding papers presented at the 17th Annual Conference of China Electrotechnical Society, organized by China Electrotechnical Society (CES), held in Beijing, China, from September 17 to 18, 2022. It covers topics such as electrical technology, power systems, electromagnetic emission technology, and electrical equipment. It introduces the innovative solutions that combine ideas from multiple disciplines. The book is very much helpful and useful for the researchers, engineers, practitioners, research students, and interested readers.
Book Synopsis Wind Turbines in Cold Climates by : Lorenzo Battisti
Download or read book Wind Turbines in Cold Climates written by Lorenzo Battisti and published by Springer. This book was released on 2015-02-16 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the key concerns regarding the operation of wind turbines in cold climates and focuses in particular on the analysis of icing and methods for its mitigation. Topics covered include the implications of cold climates for wind turbine design and operation, the relevance of icing for wind turbines, the icing process itself, ice prevention systems and thermal anti-icing system design. In each chapter, care is taken to build systematically on the basic knowledge, providing the reader with the level of detail required for a thorough understanding. An important feature is the inclusion of several original analytical and numerical models for ready computation of icing impacts and design assessment. The breadth of the coverage and the in-depth scientific analysis, with calculations and worked examples relating to both fluid dynamics and thermodynamics, ensure that the book will serve not only as a textbook but also as a practical manual for general design tasks.
Download or read book Wind Turbine Icing written by Yan Li and published by BoD – Books on Demand. This book was released on 2023-11-29 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book includes six chapters on wind turbine icing. For wind turbines operating in cold regions, icing often occurs on blade surfaces in winter. This ice accretion can change the aerodynamic shape of the blade airfoil, causing performance degradation and loss of power generation, even leading to operational accidents. This book focuses on the recent research progress on wind turbine icing. Chapters address such topics as the effect of icing conditions on the icing distribution characteristics of a blade airfoil for vertical-axis wind turbines, power loss estimation in wind turbines due to icing, wind turbine icing prediction methods, especially those using machine learning, the icing process of a single water droplet on a cold aluminum plate surface, the main theories of the icing adhesive mechanism, and theoretical and experimental studies on the ultrasonic de-icing method for wind turbine blades. This book is a valuable reference for researchers and engineers engaged in wind turbine icing and anti-icing research.
Book Synopsis CFD Analysis and Design of Wind Turbine Ice Protection Systems by : David Switchenko
Download or read book CFD Analysis and Design of Wind Turbine Ice Protection Systems written by David Switchenko and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Cold climate regions have a high potential for wind energy production, but can also be characterized by frequent atmospheric icing events, which can significantly reduce the annual power production of a wind farm. Ice that accretes on turbine blades degrades their aerodynamic performance and reduces their power output. Thus, there is a need for more accurate assessment of the effect of atmospheric icing on wind turbines and for strategies to protect turbine blades from icing.The present work uses CFD analysis to focus on two important engineering issues related to wind turbine blade icing: the wind turbine performance loss due to blade icing, and the design of blade heating systems to prevent ice accretion. All CFD simulations are performed using the FENSAP-ICE simulation system.First, CFD simulations are used to predict the impact atmospheric icing has on wind turbine power production. Fully 3D simulations are performed considering the rotor geometry of the National Renewable Energy Laboratory (NREL) Unsteady Aerodynamics Experiment (UAE) Phase VI rotor. Four representative icing conditions are simulated. The resulting '1-hour' ice shapes are shown to reduce rotor torque, and therefore resulting power output, by up to 60%. Furthermore, at high wind speeds the NREL turbine blade is regulated by intentional blade stall to prevent very high torque and overproduction. CFD simulations showed that at these wind speeds, ice accretion could increase the wind turbine rotor torque significantly, potentially damaging the turbine due to overproduction and creating possible safety concerns. Next, the FENSAP-ICE system is used to predict the power required and effective coverage region needed for an anti-icing system to prevent ice accretion on the NREL UAE Phase VI rotor. In all cases the power required to keep the rotor ice-free was less than the rated power of the turbine.Lastly, a CFD simulation of a real-world, long-term, 17-hour icing event that took place at a wind farm in the Gaspé Peninsula of Québec was performed. Results of power loss successfully matched that which occurred on site. Moreover, it was determined that an anti-icing system used during a similar icing event could protect against icing in a self-sufficient manner." --
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind Turbine Control and Monitoring by : Ningsu Luo
Download or read book Wind Turbine Control and Monitoring written by Ningsu Luo and published by Springer. This book was released on 2014-08-30 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maximizing reader insights into the latest technical developments and trends involving wind turbine control and monitoring, fault diagnosis, and wind power systems, ‘Wind Turbine Control and Monitoring’ presents an accessible and straightforward introduction to wind turbines, but also includes an in-depth analysis incorporating illustrations, tables and examples on how to use wind turbine modeling and simulation software. Featuring analysis from leading experts and researchers in the field, the book provides new understanding, methodologies and algorithms of control and monitoring, computer tools for modeling and simulation, and advances the current state-of-the-art on wind turbine monitoring and fault diagnosis; power converter systems; and cooperative & fault-tolerant control systems for maximizing the wind power generation and reducing the maintenance cost. This book is primarily intended for researchers in the field of wind turbines, control, mechatronics and energy; postgraduates in the field of mechanical and electrical engineering; and graduate and senior undergraduate students in engineering wishing to expand their knowledge of wind energy systems. The book will also interest practicing engineers dealing with wind technology who will benefit from the comprehensive coverage of the theoretic control topics, the simplicity of the models and the use of commonly available control algorithms and monitoring techniques.
Book Synopsis International Journal of Offshore and Polar Engineering by :
Download or read book International Journal of Offshore and Polar Engineering written by and published by . This book was released on 2007 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wind Turbines by : Ibrahim H. Al-Bahadly
Download or read book Wind Turbines written by Ibrahim H. Al-Bahadly and published by BoD – Books on Demand. This book was released on 2011-04-04 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: The area of wind energy is a rapidly evolving field and an intensive research and development has taken place in the last few years. Therefore, this book aims to provide an up-to-date comprehensive overview of the current status in the field to the research community. The research works presented in this book are divided into three main groups. The first group deals with the different types and design of the wind mills aiming for efficient, reliable and cost effective solutions. The second group deals with works tackling the use of different types of generators for wind energy. The third group is focusing on improvement in the area of control. Each chapter of the book offers detailed information on the related area of its research with the main objectives of the works carried out as well as providing a comprehensive list of references which should provide a rich platform of research to the field.
Book Synopsis Experimental Investigation of Ice Accumulation on Horizontal Axis Wind Turbines by : Mustafa Ahmed Elhajare
Download or read book Experimental Investigation of Ice Accumulation on Horizontal Axis Wind Turbines written by Mustafa Ahmed Elhajare and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research Reports by :
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1954 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
