The document discusses wind turbines and their use in buildings. It describes how wind turbines work by converting the kinetic energy of wind into mechanical and then electrical energy. It explains that wind speed typically increases with height, so placing wind turbines on tall buildings can help them take advantage of stronger winds. It provides examples of buildings that have incorporated wind turbines, such as the Bahrain World Trade Centre which has three 29-meter turbines that generate 11-15% of the building's energy needs.

1. Wind Turbines
• Vinay Anam
• Sem -2
• Rachana sansad acadmeny of architecture
Sustainable building technology

2. Rachana Sansad Academy of Architecture
About Wind Energy
•Wind energy is one of the cleanest forms of producing power
from renewable source
•Most of our electricity is used in buildings, and generating the
electricity on site reduces the need for transmission. This in turn
reduces transmission losses as well as the materials needed for
wiring and poles
•Wind speed typically increases with height, as it is less affected
by trees and surrounding topography. Putting wind turbines on
top of buildings—especially tall buildings—should allow them to
take advantage of height without an expensive, full-size tower.
•Wind energy is one of the cleanest forms
of producing power

3. Rachana Sansad Academy of Architecture
Wind Energy
How Wind Turbines work
•Wind is a form of solar energy. Winds are caused by the uneven heating of the
atmosphere by the sun, the irregularities of the earth's surface, and rotation of the
earth. Wind flow patterns are modified by the earth's terrain, bodies of water, and
vegetation.
• We use the motion energy to sail, fly a kite, or generate energy.
• Wind turbines convert the kinetic energy in the wind into mechanical power.
• The wind turns the blades, which spin a shaft, which connects to a generator and
makes electricity.
•Types of Wind Turbines
•Horizontal Wind Turbines
•Vertical Wind Turbines

4. Rachana Sansad Academy of Architecture
How wind turbines work

5. Rachana Sansad Academy of Architecture
Parts in wind turbines

6. Rachana Sansad Academy of Architecture
Wind Turbines components

7. Rachana Sansad Academy of Architecture
Factors affecting Wind turbines
In some cases, building geometry can enhance wind turbine performance.
Several manufacturers of building-integrated wind turbines are taking
advantage of the increased wind velocities at building parapets—where the
wind rises up the façade of a large building and curls over the edge. Some
architects are designing wind scoops right into the structures of buildings or
situating building towers to funnel wind into turbines.

8. Rachana Sansad Academy of Architecture
U.K.-manufactured Quiet Revolution
turbines produce 3 kW of power in
25 mph (11 m/s) wind.
The 400-watt AVX400 turbine from
AeroVironment, released in 2006
and shown here, has since been
replaced by the 1-kilowatt AVX1000.
New technologies

9. Rachana Sansad Academy of Architecture
A wind turbine works by
extracting kinetic energy out of the wind and
converting it to mechanical and then electrical
energy.
Power generated by wind tunnel is calculated as follows

10. Rachana Sansad Academy of Architecture
Factors locating the wind turbines
•Local wind climate area
•Shaping tall buildings to have greatest wind resource
•Latitude of the place
•Altitude of the place
•Topography of the place
•Scale of the hour, month or year

11. Rachana Sansad Academy of Architecture
Sizes of Wind turbines
•Wind turbines for land-based wind farms come in many sizes, with
rotor diameters ranging from about 50 meters to about 90 meters.
•Small wind turbines intended for residential or small business use
are much smaller. Usually are about 40 meters total.
Power generated of Wind turbines
•The output of a wind turbine depends on the turbine's size and the
wind's speed.
•Wind turbines being created now have power ratings ranging from
250 watts to 5 megawatts (MW).
•Wind speed is very important in projecting turbine performance.
•An average wind speed greater than four meters per second (m/s) (9
mph) is required for small wind electric turbines
•Larger wind power plants require minimum average wind speeds of
6 m/s (13 mph).

12. Rachana Sansad Academy of Architecture
Power
To calculate the amount of power a turbine can actually generate from the wind,
you need to know the wind speed at the turbine site and the turbine power rating.
Considering steady wind speeds, it's the diameter of the rotor that determines
how much energy a turbine can generate. Keep in mind that as a rotor diameter
increases, the height of the tower increases as well, which means more access to
faster winds.

13. Rachana Sansad Academy of Architecture
Examples of Building using wind turbines
The building Bahrain world trade centre
a twin skyscraper complex it has three wind turbines
with diameter of 29 meter each are supported by bridges
spanning between the complex's two towers. Through its positioning and the unique
aerodynamic design of the towers, the prevailing on-shore
Gulf breeze is funneled into the path of the turbines,
helping to create power generation efficiency.
the wind turbines will deliver approximately 11-15% of the
energy needs of the building,
or 1100 to 1300 megawatt-hours per year –
enough to provide light in 300 homes for over a year

14. Rachana Sansad Academy of Architecture
This opening in the face of the Pearl
River Tower will funnel wind to a
vertical-axis wind turbine
Pearl river tower

15. Rachana Sansad Academy of Architecture
Thank – you ! (No Questions)

16. Rachana Sansad Academy of Architecture
Referenes
http://www.buildinggreen.com/auth/article.cfm/2009/4
/29/The-Folly-of-Building-Integrated-Wind