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# Small Wind Turbines For Electricity And Irrigation

Small Wind Turbines For Electricity And Irrigation

##### Contents
• Small Wind Turbines: A Technology For Energy Independence
• And Sustainable Agriculture
• Introduction: Why “Small” Wind Turbines?
• Why Not “Big” Wind Turbines?
• How Small Are Hence, “Small” Wind Turbines?
• Why Small Wind Turbines For Pumping Water?
• General Plan Of This Book And Acknowledgments
• Bibliography
• General Theory Of Wind Driven Machines
• Betz’s Theorem
• The Extension Of Betz’s Theorem To Vertical Axis Wind
• Turbines
• Discussion Of The Extension Of Betz’s Theorem To
• Vertical Axis Turbines
• Notions On The Theory Of Wing Sections
• Action Of The Air On A Wing In Motion
• Lift, Drag, And Moment Coefficients
• Graphical Representation Of The Aerodynamic
• As A Function Of The Pitch Angle
• Eiffel’s Polar
• Lilienthal’s Polar
• Mixed Representations
##### Definitions And Terminology
• Solidity Coefficient, Σ
• Specific Speed, Λ
• Coefficient Of Motor Torque, Cm
• Coefficient Of Axial Force, Cf
• Coefficient Of Power, Cp
• Relationships Between Dimensionless
• Small Wind Turbines For Electricity And Irrigation
• Coefficients
• Reynolds’ Number
• Classification Of Wind Turbines
• Vertical Axis Wind Turbines
• Reaction Driven Turbines
• Aerodynamic Action Turbines
• Hybrid Turbines
• Horizontal Axis Wind Turbines
• Fast Turbines
• Slow Wind Turbines
• “Undefinable” Wind Driven Machines
• Comparison Between Different Types Of Wind
• Turbines
##### Accessory Devices Of Wind Turbines
• Application Of Betz’s Theorem
• Application Of Dimensionless Coefficients
• Bibliography
• Simplified Aerodynamic Theory For The Design Of The Rotor’s
• Definition Of The Problem
• Speed Loss Coefficient, A
• Coefficient Of Specific Local Speed
• Coefficient Of Angular Speed, A′
• The Theory Of The Annular Flow Tube With Vortical Trail
• The Theory Of The Aerodynamic Forces On The Element
• Optimum Variation Of The Angle Θ
• Optimum Variation Of The Product Σl
• Optimum Blade For Maximum Aerodynamic
• Small Wind Turbines For Electricity And Irrigation
• Efficiency
• Conclusions
• Variation Of The Chord
• Relationship Between Solidity, Specific Speed, And
• Efficiency Of The Turbine
• Solidity And Specific Speed