Wind power PRESENTATION

ITS ABOUT THE ALTERNATE ENERGY SOURCE WIND AND ITS APPLICATIONS

1. 1
Wind Energy
A Renewable Source of Energy
Presentation By
Sanjana and Alekhya
2
nd
Year EEE Department
BVRIT Hyderabad

2. 2
Renewable Energy
Energy is basically classified into 2 categories.
Renewable and Non Renewable.
Non Renewable sources are Coal, Petrol etc...
Renewable Sources are Solar, Biomass, Wind, Water etc…

3. 3
Wind Energy Outline
History
Context
Working
Advantages
Site Selection
Disadvantages
Economics Improvement
Future

4. 4
Wind Energy History
1200 to 1850
Golden era of windmills started in western Europe –
50,000
1850’s
 Multiblade turbines for water pumping made and
marketed in U.S
1850 – 1930
As many as 6,000,000 units installed in US Midwest
1936+
US Rural Electrification Administration extends the grid to
isolated rural sites.
Grid Electricity rapidly displaced multiblade turbines

5. Wind Energy - What is it?
All renewable energy (except tidal and
geothermal power), ultimately comes from
the sun.
The earth receives 1.74 x 10
17
watts of
power (per hour) from the sun.
About one or 2 percent of this energy is
converted to wind energy
(which is about 50-100 times more
than the energy converted to
biomass by all plants on earth).
Differential heating of the earth’s surface
and atmosphere induces vertical and
horizontal air currents that are affected by
the earth’s rotation and contours of the
land  WIND.
Ex: Land Sea Breeze Cycle

6. Windmill Design
 A Windmill captures wind
energy and then uses a
generator to convert it to
electrical energy.
The design of a windmill
is an integral part of how
efficient it will be.
When designing a
windmill, one must decide
on the size of the turbine,
and the size of the
generator.

8. 8
Increasingly Significant Power Source
Wind could
generate
6% of
nation’s
electricity
by 2020.
Wind currently produces less than
1% of the nation’s power.
Source: Energy Information Agency

9. 9
Advantages of Wind Power
Environmental Benefits
Economic Development
Benefits
Fuel Diversity & Conservation
Benefits
Cost Stability Benefits

10. 10
Pollution from Electric Power
23%
28%
33%
34%
70%
0% 20% 40% 60% 80%
Toxic Heavy Metals
Particulate Matter
Nitrous Oxides
Carbon Dioxide
Sulfur Dioxide
Percentage of U.S. Emissions
Electric power is a primary source of industrial air pollution

11. 11
Density = P/(RxT)
P - pressure (Pa)
R - specific gas constant (287 J/kgK)
T - air temperature (K)
= 1/2 x air density x swept rotor area x (wind speed)
3
r A V
3
Area = p r
2 Instantaneous Speed
(not mean speed)
kg/m
3
m
2
m/s
Power in the Wind (W/m
2
)

12. 12
Site Selection
Technical Factors affecting site selection:
High Average annual wind speed
Low Cost of Construction
Close Distance from Utility line or customers
Prevailing wind Direction
Surface Roughness
Obstacle Height, Dis >5OH, OH, <0.5HH

13. 13
Disadvantages
Birds - A Serious Obstacle
Noise Disturbances
Cost of Wind Turbine
Threat to Wildlife
Wind Can Never Be
Predicted
Suited To Particular Region
Visual Impact

14. 14
Wind Energy Natural Characteristics
Wind Speed
Height
Air density
Blade swept area

15. 15
Turbines Constantly Improving
Larger turbines
Specialized blade design
Power electronics
Computer modeling
Produces more efficient design
Manufacturing improvements

16. 16
Improved Capacity Factor
Performance Improvements due to:
Better sitting
Larger turbines/energy capture
Technology Advances
Higher reliability
Capacity factors > 35% at good sites
Examples (Year 2000)
Big Spring, Texas
37% CF in first 9 months
Springview, Nebraska
36% CF in first 9 months

17. 17
Expectations for Future Growth
20,000 total turbines installed by 2010
6% of electricity supply by 2020
India now ranks as a “wind superpower” having a net
potential of about 45000 MW only from 13 identified states.
100,000 MW of wind power
installed by 2020

18. 18
The Future of Wind - Offshore
• 1.5 - 6 MW per
turbine
• 60-120 m hub
height
• 5 km from shore,
30m deep ideal
• Gravity foundation,
pole, or tripod
formation
• Shaft can act as
artificial reef
• Drawbacks- T&D
losses (underground
cables lead to shore)
and visual eye sore

19. 19

20. 20
Ancient Resource Meets 21
st
Century

21. Thank you
Any Queries ??
Project Guide:
COL Dr. SURENDRA
Visionary Lighting and Energy INDIA Ltd.