Title: Dr. Jeff SaleeDr. Scott FrazierDr. Shannon Ferrell
1The Power of WindHelping 4-Hers Understand Wind
Power in OklahomaApril 23, 2009
- Dr. Jeff Salee Dr. Scott Frazier Dr. Shannon
Ferrell - Department of Agricultural Education, Department
of Biosystems Department of Agricultural - Communication, and Leadership and Agricultural
Engineering Economics
2Location, location, location
Source http//www.greenspec.co.uk/html/energy/win
dturbines.html
3Location, location, location
Source Paul Gipe, Wind Energy Basics (Chelsea
Green Publishing Co., 1999)
4The Power of Wind Curriculum
- How can we think like an engineer?
- How do we study the wind?
- How do we use the wind?
- How do geography and community influence wind
power projects? - How does wind inspire creativity and design?
5How Do Geography and Community Influence Wind
Power Projects?The Oklahoma Version
6So why is it so windy in the southern Great
Plains?
7But what about Oklahoma specifically?
8A Map of Oklahomas Wind Resources
G
Current Wind Farms A Oklahoma (Woodward) B
Blue Canyon (Lawton) C Weatherford D
Centennial (Fort Supply) E Sleeping Bear (Fort
Supply)
F Buffalo Bear (Ft. Supply / Buffalo)G Red
Hills (Hammon)
Source Oklahoma Wind Power Initiative
9Top 10 States by Installed Wind Energy Capacity
10States with Renewable Portfolio StandardsSource
US Department of Energy, Office of Energy
Efficiency and Renewable Energy
11Oklahomas Installed Utility-Scale Wind Power
Capacity
Source Oklahoma Wind Power Initiative
12What concerns do communities have about wind
power?
13What concerns do communities have about wind
power?
14What concerns do communities have about wind
power?
15What concerns do communities have about wind
power?
16How Do We Study The Wind?
17How do we study the wind?
18Measuring Oklahomas wind
19How Do We Think Like an Engineer?
20Power is a function of air density, swept area,
and wind speed
- Doubling rotor length gets us 22 four times the
swept area and thus four times the power - Since power increases as a cubic function of
velocity, we see 23 eight times the power.
Source http//www.windpower.org/en/tour/wres/ener
wind.htm,
21A sense of turbine scale
Source Paul Gipe, Wind Energy Basics (Chelsea
Green Publishing Co., 1999)
22How big is a wind turbine?
Hub Weight 35,000 lbs (17.5 tons, 2 1/3
elephants) Blade Length 113 feet (wingspan of a
747 jet) Blade Weight 17,500 lbs (8.75 tons, 1.1
elephants) Total Rotor Weight 87,500 lbs (43.75
tons, 5 2/3 elephants)
COURTESY OMPA
23How big is a wind turbine?
60 TON NACELLE (about the size of a small school
bus)
COURTESY OMPA
24How big is a wind turbine?
THE TOP SECTION WEIGHS 24.5 TONS
COURTESY OMPA
25COURTESY OMPA
26An example from Woodward/Freedom
Source Image and measurements from Google Earth,
http//earth.google.com
27Spacing OutThe spatial impacts of projects
- American Wind Energy Association estimates total
area of 60 acres/MW of capacity. - 3 acres (5) to actual physical occupation of
land. - 57 acres (97) to exclusion area for windflow
preservation.
¼ section (160 acres)
Image from Google Earth