wind energy in buildings

Wind Turbines

• Vinay Anam• Sem -2• Rachana sansad acadmeny of architecture

Sustainable building technology

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


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


How wind turbines work


Parts in wind turbines


Wind Turbines components


Factors affecting Wind turbinesIn 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.


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The 400-watt AVX400 turbine from AeroVironment, released in 2006 and shown here, has since been replaced by the 1-kilowatt AVX1000.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


A wind turbine works byextracting kinetic energy out of the wind andconverting it to mechanical and then electricalenergy.

Power generated by wind tunnel is calculated as follows


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


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).


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.


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


This opening in the face of the Pearl River Tower will funnel wind to a vertical-axis wind turbine

Pearl river tower


Thank – you ! (No Questions)


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

http://www.buildinggreen.com/auth/article.cfm/2009/4/29/The-Folly-of-Building-Integrated-Wind

http://www.buildinggreen.com/auth/article.cfm/2009/4/29/The-Folly-of-Building-Integrated-Wind

wind energy in buildings

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