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• W318847362 abstract "Straight bladed fixed pitched vertical axis wind turbines (VAWTs) offer several potential advantages over the standard horizontal axis wind turbines which are now in common use worldwide. The purpose of this study was to determine the need for further research and develop on improved airfoil or blade characteristics for use on straight bladed fixed pitched VAWT. This need was demonstrated by the design and construction of an airfoil that was physically modeled and field tested. The test showed that asymmetric airfoils would enable SBVAWTs to self start. INTRODUCTION Wind is an abundant energy resource ultimately powered by the Sun. It is estimated that approximately 3% of the Sun’s thermal energy is transformed into wind energy. Recent studies show that current wind technology operating only in Class 3 wind locations is capable of producing approximately 72 terawatts of electricity (Stanford Report, 2005). This is forty times the amount of electrical power annually consumed worldwide and this clean power source is just beginning to be tapped on a large scale. Wind energy is developing into a major alternative energy source. Over 159,000 megawatts of wind generation were operational by the end of 2009 with 38,312 megawatts added in 2009 alone (World Wind Energy Association, 2010).The reasons for this growth are straightforward. Wind is a vast energy resource which is clean and renewable. By its inherent nature, wind power has the potential to reduce the environmental impact on wildlife and human health. Improvements in power electronics, materials, and wind turbine designs allow production to continually lower the cost of wind generated electricity making it today economically viable compared with most other fossil fuels. Most wind turbines are installed in locations where the minimum annual average wind speeds are between 14.3 and 15.7 mph. This range is known as Class 3 winds. The consistency and speed of these breezes are major factors in locating wind turbine farms. MODERN WIND TURBINES AND THEIR LIMITS The majority of wind turbine design currently focuses on the horizontal axis wind turbines (HAWTs). Today, more than 90% of wind turbines in use are of HAWT design (Vieira da Rosa, 2009). Modern HAWTs are currently favored for electrical generation for several reasons. First, the arrangement of the blades allows nearly their full area swept to always be interacting with the breeze. This maximum exposure to the wind improves the coefficient of performance (C p ) of modern HAWTs. Modern HAWTs have low blade solidity which is the ratio of blade area to the actual swept area. This aids the blades or airfoils in the production of lift. Though very successful, the modRigoberto Chinch i l la , PhD in Integrated Engineering, Ohio University, is an Associate Professor of Applied Engineering and Technology at Eastern Illinois University (EIU) since 2004. His teaching and research interests include Quality design, Biometric and Computer Security, Clean Technologies and Automation. Dr. Chinchilla has been a Fulbright and a United Nations scholar, serves in numerous departmental and university committees at EIU and has been awarded several research grants in his career. Dr. Chinchilla can be reached at rchinchilla@eiu.edu. Dr. Sam Guccione is an Associate Professor of Applied Engineering and Technology in the Eastern Illinois University (EIU) School of Technology. He has been coordinator of the School’s Automation and Control laboratory for the past 10 years where he taught robotics, automated processes, industrial computers and human machine interface in process control. Prior to his appointment at EIU, Dr. Guccione was department chair of Engineering Technology and an occasional assistant dean for 26 years at Delaware Technical and Community College, Dover. Before his teaching career, he worked for 10 years at McDonnell-Douglas (now Boeing) and other companies as an electrical engineer in the US space program. He has degrees in Electrical Engineering from the University of Illinois UrbanaChampaign and a doctorate in education from Temple University, Philadelphia. M r . J o s e p h T i l l m a n , P E serves as Director of Sustainability and campus engineer at Lake Land College in Mattoon, IL. He earned his BSEE from Southern Illinois University at Carbondale and is a licensed I l l inois professional engineer. He is extensively involved in alternative energy projects and is completing graduate studies at Eastern Illinois University in Charleston, IL." @default.
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• W318847362 date "2011-01-01" @default.
• W318847362 modified "2023-09-27" @default.
• W318847362 title "Wind Power Technologies: A Need for Research and Development in Improving VAWT’s Airfoil Characteristics" @default.
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