CEE 265 Lecture Notes - Wind Turbine, Triple Bottom Line, Sun Path

• School: U of M
• Department: Civil And Environmental Engineering
• Course: CEE 265
• Professor: Phillip Savage

Document Summary

Dependence on the cube of the wind speed. Rotor efficiency indicates how much kinetic energy will be extracted by the turbine. Important in choosing where to construct a wind turbine: actual wind turbines can"t actually get all kinetic energy from wind, based on limitation of generator. Wind speed distribution and average wind speed important for deciding turbine location. We also talked about capacity factor and effectiveness of turbine: impossible to get high cf and eff (the ideal, always a trade-off. Triple bottom line: economics, performance, and social factors: professor used baseball example. For wind turbine: capital cost = cost of turbine rotor + blades + tower + electromechanical system, capital cost (cc) increases as pr (rated power output) increases. In-class problem 21. 3: wind turbine energy payback time. Rate power of 2 mw running at 25% capacity: required 100,000 kg of steel to make, assume 40 kwh energy input to make each kg of steal.