Download or read book Convective Heat Transfer and Experimental Icing Aerodynamics of Wind Turbine Blades written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: October 2008.
Download or read book Convective Heat Transfer and Experimental Icing Aerodynamics of Wind Turbine Blades written by Xin Wang and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Iced airfoil -- Aerodynamics -- Ice shapes -- Heat transfer -- Power losses -- Experiment.
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
Download or read book Heat Transfer and Icing of Wind Turbine Blades written by Xin Wang and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The total worldwide base of installed wind energy peak capacity reached 197 GW by the end of 2010. Wind turbine systems are being installed often in mountains and cold weather regions, due to their high wind energy potential. Harsh cold weather climates affect wind turbine performance. Ice accretion and irregular shedding during turbine operation lead to load imbalances, vibration and structural failures, often causing the turbine to shut off. This book presents an experimental investigation including three important fundamental aspects: energy losses of wind energy while a wind turbine is operating under icing conditions; aerodynamic characteristics of an airfoil during a simulated icing event and heat transfer characteristics of the airfoil with and without liquid water content at varying angles of attack. The drag, lift and moment are measured by a force balance system to obtain the aerodynamics of an iced airfoil. The book also quantifies the power loss under various icing conditions. The data obtained can be used to validate numerical models and predict heat transfer characteristics when wind turbines operate in cold climate regions.
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.
Download or read book Aerodynamics of Wind Turbines written by R.S. Amano and published by WIT Press. This book was released on 2014-11-24 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on Aerodynamics of Wind Turbines with topics ranging from Fundamental to Application of horizontal axis wind turbines, this book presents advanced topics including: Basic Theory for Wind turbine Blade Aerodynamics, Dynamics-Based Health Monitoring and Control of Wind Turbine Rotors, Experimental Testing of Wind Turbines Using Wind Tunnels with an Emphasis on Small-Scale Wind Turbines Under Low-Reynolds Numbers, Computational Methods, Ice Accretion for Wind Turbines and Influence of Some Parameters, and Special Structural Reinforcement Technique for Wind Turbine Blades. Consequently, for these reasons, analysis of wind turbines will attract readers not only from the wind energy community but also in the gas turbines heat transfer and fluid mechanics community.
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 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.
Download or read book Analytical and Experimental Investigation of a Forced convection Air cooled Internal Strut supported Turbine Blade written by Eugene F. Schum and published by . This book was released on 1954 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Heat transfer Characteristics of an Air cooled Sintered Porous Turbine Blade written by Louis J. Schafer (Jr.) and published by . This book was released on 1952 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Procedure for Calculating Turbine Blade Temperatures and Comparison of Calculated with Observed Values for Two Stationary Air cooled Blades written by W. Byron Brown and published by . This book was released on 1952 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Local and average blade temperatures were calculated for two stationary air-cooled turbine blades with 10 tubes and 13 fins forming the internal heat-transfer surfaces. These temperatures were calculated using previously published NACA temperature-distribution equations and the most recent theories for determining heat-transfer coefficients, including for the first time the allowance for effects of variable wall temperature on gas-to-blade heat-transfer coefficients at the leading and trailing sections of turbine blades. Comparison of calculated and experimental blade temperatures, for gas temperatures of 300° and 1000°F, resulted in good agreement.
Download or read book An Experimental and Computational Approach to Iced Wind Turbine Aerodynamics written by Peter Blasco and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents an analysis of power loss of a representative 1.5 MW wind turbine for variable icing conditions. Power losses are estimated using aerodynamic data obtained in a combination of two experimental methods. Atmospheric icing conditions varying in temperature, droplet size, and liquid water content are generated in an icing facility to simulate a 45-minute icing event on a representative wind turbine airfoil section. The ice shapes are then molded for preservation and subsequent wind-tunnel testing. Lift and drag measurements are made and used to estimate the total power production of the iced wind turbine using a blade-element momentum theory prediction code. Detailed measurements of ice profiles show that aerodynamic penalties are mainly a function of surface roughness due to icing. A 16% loss of airfoil lift at operational angle of attack is observed for freezing-fog conditions. Drag increases at a lift coefficient of 0.5 are observed to be 190% at temperatures near 0°C, 145% near -10° C, and 80% near -20°C. An analysis of the wind turbine aerodynamic loads due to atmospheric icing yields power losses ranging from 16% to 26% near an average wind speed of 8 m/s. An exception to these results exists for a single super-large droplet icing case in which lift decrease and drag increase are more severe at 25% and 219%, respectively. The analysis gives insight to potential control strategies for wind turbine operators attempting to minimize revenue loss in cold-climate operations.
Download or read book Experimental and Analytical Research on the Aerodynamics of Wind Driven Turbines written by C. Rohrbach and published by . This book was released on 1977 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Additional Experimental Heat transfer and Durability Data on Several Forced convection Air cooled Strut supported Turbine Blades of Improved Design written by Eugene F. Schum and published by . This book was released on 1955 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Analytical Investigation of Heat transfer Characteristics of a Return flow Air cooled Turbine Rotor Blade written by Francis S. Stepka and published by . This book was released on 1959 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Incidence on Wall Heating Rates and Aerodynamics on a Film Cooled Transonic Turbine Blade written by Cengiz Camci and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the influence of incidence on convective heat transfer to highly curved surfaces of a film-cooled turbine rotor blade. A computational study of free-stream inviscid aerodynamics without cooling at various incidences is followed by well-documented measured heat transfer data sets. The heat transfer experiments are discussed for cases with and without film cooling, performed under realistic gas turbine flow conditions in the short-duration heat transfer facility of the von Karman Institute for Fluid Dynamics. The precise location of the stagnation point and the iso-Mach number contours in the passage for each incidence (−10, 0, 10, +15 deg) are presented for a nominal exit Mach number of 0.94. The free-stream mass flow rate was kept constant for each experiment at different incidence levels. Three rows of compound angled discrete cooling holes are located near the leading edge in a showerhead configuration. Two rows of staggered discrete cooling holes are located on the suction side and a single row of cooling holes is located on the pressure side. The short-duration measurements of quantitative wall heat fluxes on nearly isothermal blade surfaces both in the presence and absence of coolant ejection are presented. The study indicated that the change of the position of the stagnation point strongly altered the aerodynamic behavior and convective heat transfer to the blade in approximately the first 30 percent of both the pressure side and the suction side in the presence and absence of film cooling. The immediate vicinity of the stagnation point was not significantly affected by changing incidence without cooling. Transitional behavior both on the suction surface and on the pressure surface was significantly influenced by the changes in approaching flow direction. Flow separation associated with incidence variations was also observed. Extremely low levels of the convective heat transfer coefficients were experienced near the regions where small separation bubbles are located.
Download or read book An Experimental and Numerical Convective Heat Transfer Analysis Over a Transonic Gas Turbine Rotor Blade written by Keith Baharath Cassie and published by . This book was released on 2006 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
