wind power notes - compatibility modemammoli/me217_stuff/lectures_f2017/wind_pow… · me217...
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Mechanical EngineeringME217 Energy, Environment & Society
ME 217: Energy, Environment & Society Fall 2017
Wind power
photo by Michael "Mike" L. Baird bairdphotos.com
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Wind power in history
Persia Greece
NetherlandsBritain
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Modern wind turbines
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Basic aerodynamics
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Lift vs. drag
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Near hub vs. near tip
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Inside a nacelle
generator
windspeed meters
gearbox
brake
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At the base
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Inside the tower
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How much power is in the wind?
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Example
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Turbine efficiency – the Betz limit
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Turbine performance
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Global atmospheric circulation
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Local wind patterns
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Effect of altitude
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Ground friction
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Example
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Land or sea?
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Wind resource assessment
sodar
direct measurement
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How do we make money from wind?
Characterize wind potential at the site
“spec out” the turbines
Secure a power purchase agreement
Secure all necessary permits and transmission access
Finance the project
Build the plant
Operate and maintain the plant
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Time variability of wind speed
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How to characterize wind speed?
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Weibull distributions
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Our data
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Histogram for our data
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The fitted Weibull distribution
k = 2.30783λ = 9.0444
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Now what?
136 x 1.5 MW General Electric wind turbines
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Turbine power curve
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GE 1.5 MW power curve
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How do we calculate revenue?
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Our revenue table
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What goes into the cost of energy
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Wind farm – following terrain
High Lonesome wind farm, New Mexico
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Wind farm – flat land
Wind farm in West Texas
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Tornado!
http://www.youtube.com/watch?v=0KdVCxY9o4s&feature=youtu.be&t=2m21sOn November 7, 2011, the Basehunters chase team of Isaac Pato, Kevin Rolfs, Scott Peake and Colt Forney tracked a tornado-producing supercell across southwest Oklahoma, documenting numerous tornadoes including one that impacted a large wind farm near Fort Cobb!
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This time not so lucky!
Damage done by tornado at Flat Ridge 2 wind farm in Kansas.
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Typical farm layout
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Turbine wake demonstration
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Effect of wake
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Q: where is electricity needed most?
A: at the major population centers near the coasts
Is wind available near there?
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Offshore technology
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Transitional depth concepts
www.nrel.gov/docs/gen/40462.pdf
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Deepwater concepts
www.nrel.gov/docs/gen/40462.pdf
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Small wind
What is the wind resource like in Albuquerque?
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Generation – load match (or not)