197x Filetype PPTX File size 2.85 MB Source: tfaws.nasa.gov
Outline • Introduction • Objective • Numerical Setup • Results • Conclusions Wind Energy • The conversion of wind energy into various other useful forms such as electricity is known as wind power • Studying wind energy is desirable because: – Wind energy is renewable – There is ample supply of wind energy – Suitable wind patterns are available worldwide – Production costs of wind energy are declining – Wind energy produces minimal greenhouse gas emissions Wind Turbines Horizontal Axis Wind Vertical Axis Wind Turbines (HAWT) Turbines (VAWT) Advantages Advantages • Higher efficiency • Ground mounting makes • Can furl out of the wind to reduce maintenance easier wind speed seen by the blades • Can be installed in areas of wind • High towers reduce turbulence funnelling and high wind speeds caused by nearby structures • Lower noise signature • Disadvantages • Requires lower starting speeds • Tower mounting makes maintenance • Disadvantages more difficult • Lower efficiency • Requires large structures • May require guys to support • Installation requires heavy equipment • Requires additional controls to furl rotation axis and rotate to orient blades in the wind • Can create an inconsistent torque direction (pulse) Wind Turbines Wind Turbines
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