Small Wind Turbines For Electricity And Irrigation
Small Wind Turbines: Technology for Energy Independence – and Sustainable Agriculture – Introduction: Why “Small” Wind Turbines? – Why not the “big” wind turbines? – So how big are “small” wind turbines? – Why small wind turbines for pumping water? – Presentation of the book and thanks – Bibliography – General theory of wind turbines – Betz’s theorem – Extension of Betz’s theorem to the vertical wind – Turbines – Presentation of the extension of Betz’s theorem – Turbines with a vertical axis – Transversal concepts – Effect of the air on Movable wing – Lift, drag and moment coefficients – Graphical representation of aerodynamics – As a function of pitch angle – Eiffel Pole – Lilienthal Pole – Representations – Definitions and terminology – Duration coefficient Σ – Speed of specific rotation of the engine, Λ – Moment coefficient of engine speed, Cm – Axial force factor, Cf –Power Factor, Cp – Dimensionlessness Ratio – Coefficients – Reynolds Number – Classification of Wind Turbines – Vertical Axis Wind Turbines – Reaction Turbines – Aerodynamic Turbines – Hybrids – Horizontal Axis Wind Turbines – Fast Turbines – Slow Turbines – “Undefined” Wind Machines – Comparison between different types of wind.