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Free images Related to Power & Energy
Wind Turbines

Note on large files:  Very large files may be bigger than your screen.  
Right click on any portion of the image showing and chose "save as".

 

 

Have you ever heard of a wind farm?  Yep, there are land owners that farm the wind!

While the windmills of olden times captured the wind with their blades and converted that energy via gears to pump water or grind grain, the modern wind "turbine" converts kinetic energy from the wind into electrical power.  

What's kinetic energy?  Physics explains that the kinetic energy of an object is the energy that it possesses due to its motion.  Kinetic energy is energy that is in motion.  Moving water and wind are good examples.  In the case of the wind turbines, it is the energy of the wind caught by blades. 

Wind turbine is the name given to this design of a wind capturing object, but there is no actual turbine used in the design.  Large blades that rotate caused by the force of the wind should more accurately be called "blade-powered generators" for it is the motion of the blades that generates electricity.  Nonetheless, the common name that appears to be sticking to describe to these energy producing capturers of wind, is the wind turbine.

Large groups of turbines are known as "wind farms".  

Wind energy projects have sprouted up around the world.  They are popular because the wind is a free and renewable resource.  It emits no harmful greenhouse gases.  Unless otherwise noted, the images below are of turbines located in the province of southern Ontario.  

Did you know....

that the blades capturing the wind come is a variety of shapes and sizes.  The blades may be straight, v-shaped, or curved.  There are also blades that look like scoops.  

Big wind turbines need firm structures on which to be placed.  Typically, they are lowered onto reinforced concrete platforms up to five meters in diameter by cranes.  The towers themselves are made of rolled, steel, concrete or a mixture of the two.   Larger towers measure between 80-100 meters high and are fitted together in sections.

The cone-shaped center of the blades that sits on top of the tower is called a "nacelle".  Within the nacelle is the generator and a braking system that prevents the turbine from spinning too fast.  While the nacelle can rotate 360 degrees, within the nacelle is a "yaw drive" which turns the nacelle so that it's facing directly into the wind.

Large turbines like the ones found below in Southern Ontario can produce up to 2.5 megawatts of power at full speed. 

 

Did you know....

that a two-megawatt turbine costs about $4-5 million to install? According to the Toronto Star newspaper (2011), the owners of the land where turbines are placed are paid about $38,000 each year in rent .

Although wind farms are becoming an increasingly important source of renewable green energy, farming wind does not come without controversy.  There have been many objections and demonstrations against wind turbines.  Concerns include the noise that turbines emit and their health effects.  A recent (2014) Canadian federal study, however, turned up no direct link between wind-turbine noise and health effects such as headaches, high blood pressure and stress. 

 

three blade wind turbine on winter field

Wind Turbine - 1

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 4608 x 3456 -  For the full-size resolution of this image click here.

 

 

tall white wind turbine

Wind Turbine - 2

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 2592 x 3456 -  For the full-size resolution of this image click here.

 

 

wind farm turbines

Wind Turbine - 3

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 4054 x 3041 -  For the full-size resolution of this image click here.

 

 

south ontario wind turbines

Wind Turbine - 4

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 2592 x 3456  -  For the full-size resolution of this image click here.

 

 

southern ontario wind farm

Wind Turbine - 5

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 4608 x 3456 -  For the full-size resolution of this image click here.

 

 

tall white wind turbines

Wind Turbine - 6

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 3334 x 4445  -  For the full-size resolution of this image click here.

 

 

wind farm hydro generators

Wind Turbine - 7

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 4608 x 3456 -  For the full-size resolution of this image click here.

 

 

three blades of wind generator

Wind Turbine - 8

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 3456 x 4608  -  For the full-size resolution of this image click here.

 

 

wind turbine three straight blades

Wind Turbine - 9

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 3456 x 4608  -  For the full-size resolution of this image click here.

 

 

large wind generator on farmer field

Wind Turbine - 10

Medium - 640 x 480  Right click on above image and chose "save as".

Large - 3155 x 4205  -  For the full-size resolution of this image click here.

 

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