institute for cte educators july 15-17, 2013
DESCRIPTION
A STEM View of Wind Energy. Institute for CTE Educators July 15-17, 2013. R. Keith Booker, Ed.S Memphis East High School. Wind Energy - Overview. Vertical Axis Wind Turbine (VAWT) 7 th Century - Persia First use of wind for production Used for milling grain 11 th Century – China - PowerPoint PPT PresentationTRANSCRIPT
Institute for CTE EducatorsJuly 15-17, 2013
A STEM View of Wind Energy
R. Keith Booker, Ed.SMemphis East High School
Vertical Axis Wind Turbine (VAWT) • 7th Century - Persia
• First use of wind for production• Used for milling grain
• 11th Century – China• First to adapt wind for pumping water• First large-scale salt extraction
Wind Energy - Overview
Advantages• Omni-directional• Low wind speed• Low mounting height
Disadvantages• Low starting torque• Dynamic instability• Main bearing failure
Vertical Axis Wind Turbine (VAWT)
Horizontal Axis Wind Turbine (HAWT) • 11th Century - Europe
• Brought from Middle East during Crusades• Used for grain mills and water pumps
• 14th Century – Netherlands• First large scale pumping application
• 1887 – James Blythe - Scotland• First use for electrical generation
Wind Energy - Overview
Advantages• High-wind stability• Variable-pitch blades• Lower mechanical stress
Disadvantages• High start-up cost• Downwind instability• Requires additional controls
Horizontal Axis Wind Turbine (HAWT)
Panemone Wind Turbine
Vertical Axis Wind Turbine (VAWT)
Darrieus Wind Turbine
Vertical Axis Wind Turbine (VAWT)
Savonius Wind Turbine
Vertical Axis Wind Turbine (VAWT)
Fixed-blade Wind Turbine
Horizontal Axis Wind Turbine (HAWT)
Turbine Components
Horizontal Axis Wind Turbine (HAWT)
U.S. Wind Production Zones
Worldwide Production
2010 Worldwide Wind Energy Production = 2.8 Terawatt hours (TWh)
Average U.S. household usage = 3 kWh
2.8 TWh = 2,800,000,000 kWh / 3 kWh = 930,000,000 U.S. homes
Worldwide Production
1. China
2. U.S.
3. Germany
4. Spain
5. India
Top Ten Producers (GWh)
6. France
7. Italy
8. U.K.
9. Canada
10. Portugal
6.8
6.7
6.5
5.2
4.1
62.7
46.9
29.1
21.7
16.1
Questions?