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Wind Energy

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Robin Murphy

on 12 January 2014

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Transcript of Wind Energy

Physics Project By Elena & Robin
Wind Energy
What Is Wind Energy?
Wind energy is electricity generated from the wind.

It is generated in windmills and/or wind turbines.

Wind power is a renewable source of energy.

It's one of the fastest growing source of energy around the world.

How It Works
Wind turbine works the opposite of a fan.

It uses wind to create electricity where as a fan uses electricity to create wind.

Wind turns the blades, which spin a shaft, which connects to a generator that creates electricity.
spin from the energy in the wind.

is connected to the blades and the low-speed shaft allowing them to rotate
Low-speed shaft spins the gear box the high-speed shaft.
high-speed shaft in turn spins the generator.
the generator spins creating electricity
Advantages of Wind Power
renewable source of energy
Wind energy is environment friendly since it does not require fossil fuels to be burnt and in turn does not emit greenhouse gases or co2 into the atmosphere.
Wind turbines does not take up a lot of space meaning the land can be used for also used by farmers for agriculture
Cost efficient once the wind turbine is set up it doesn't cost much more money to generate electricity since the wind is free.
New technologies makes the extraction of wind energy more efficient
Wind turbines come in different sizes and can be adapted for different types of area
great for remote locations
When combined with solar electricity it becomes a stable and dependable source of energy for developing and developed countries
creates jobs (i.e installation and maintenance)
Disadvantages of Wind Power
wind is not predictable
Wind power does not generate a lot of electricity as a single unit which in turn multiple units must be made to make an impact
the installment of wind turbines is very expensive and can affect wildlife in the area
Controversial type of energy with people living in the countryside or remote locations
The noise pollution is an issue for nearby residents
limited source of energy geographically
visually unappealing
Energy Transformations in Wind Turbines
Wind turbines transform the kinetic energy from the wind to electrical in the generator.
When the wind spins the blades attached to the rotor the machines in the turbine transforms the kinetic energy into mechanical energy.
The mechanical energy in the gearbox is transferred to the generator that transforms the mechanical energy into electrical energy.
Wind Power in Canada
Wind energy is used all over Canada.
Nunavut is the only province that does not produce wind energy.
Canada's current installed capacity is 7,051 MW
Ontario produces the most wind energy at 2,366.1 MW
Wind turbines today produce electricity 70-85% of the time.
It generates different outputs depending on the wind speed.
Over a time span of a year a wind turbine should generally produce 30% of the maximum output.
with Example
Wind Energy in the Future
(How Does a Wind Turbine Work)

(Advantages of Wind Energy)

(Disadvantages Of Wind Energy)

Types of Wind Turbines
Horizontal Axis Wind Turbines (HAWT)
Blades rotate parallel to the ground.
Advantages :
Tall base allows access to stronger winds.
High efficiency because the turbines move perpendicular to the wind receiving energy through the whole rotation.
(Canada's Energy Future)
(Global Wind Day)
Tall tower base is easy to see from far away which can be unappealing to some people.
Requires additional parts to stop the turbines from spinning and destroying itself.
(Wind Energy Stamp from Canada)

(Exploring Green Technology)
Types of Wind Turbines Cont...
(Green Energy Saving Tips)
Vertical Axis Wind Turbines (VAWT)
(Wind Energy Planning)
Blades rotate perpendicular to the ground.
(wind turbines power)
Can be located closer to the ground where parts are easier to maintain.
Able to take advantage of locations that can increase wind velocity, like roofs and hills.
(How Does a Wind Turbine Work)
Low efficiency from additional drag from the blades rotating in the wind.
Being close to the ground does not let the turbines get the high speed winds above.
(Canwea)Canwea. (n.d.). Retrieved from
(Canwea)Canwea. (n.d.). Retrieved from
(How Does a Wind Turbine Work)How Does a Wind Turbine Work?. (n.d.). Wind Program:. Retrieved November 21, 2013, from
(Advantages of Wind Energy)Advantages and Disadvantages of Wind Energy. (n.d.). Home. Retrieved November 21, 2013, from
(Disadvantages Of Wind Energy)Disadvantages Of Wind Energy. (n.d.). ConserveEnergyFuture. Retrieved November 21, 2013, from
(Blackboard)Energy is transferred and transformed by forces doing work. (n.d.). Blackboard. Retrieved November 21, 2013, from
(Canada's Energy Future)Canada's Energy Future: Energy Supply and Demand Projections to 2035 - Emerging Fuels and Energy Efficiency Highlights. (n.d.). Government of Canada, National Energy Board. Retrieved November 21, 2013, from
(STELR)STELR :: wind ENERGY. (n.d.). STELR :: wind ENERGY. Retrieved November 21, 2013, from
(Global Wind Day)How efficient are wind turbines? - Global Wind Day. (n.d.). Global Wind Day. Retrieved November 21, 2013, from
(Centurion Energy)Centurion Energy. (n.d.). Types of Wind Turbines. Retrieved November 21, 2013, from
(Energy 101)Energy 101: Wind Power. (2011, December 16). YouTube. Retrieved November 21, 2013, from
(Wind Power)Wind Power: The Truth. (2012, August 27). YouTube. Retrieved November 21, 2013, from
(Wind Energy Stamp from Canada)Wind Energy Stamp from Canada. (n.d.). WIND-WORKS:. Retrieved November 21, 2013, from
(Exploring Green Technology)How does wind energy work?. (n.d.). Exploring Green Technology. Retrieved November 21, 2013, from
(Green Energy Saving Tips)How Wind Turbines Work. (n.d.). Green Energy Saving Tips RSS. Retrieved November 21, 2013, from
(Wind Energy Planning)Wind Energy Planning: Results of the American Planning Association Survey. (n.d.). Wind Energy Planning: Results of the American Planning Association Survey. Retrieved November 21, 2013, from
(wind turbines power)How many wind turbines does it take to produce 1 million megawatts of power?. (n.d.). How many wind turbines does it take to produce 1 million megawatts of power?. Retrieved November 21, 2013, from
(Horizontal Axis Wind Turbine)Horizontal Axis Wind Turbine. (n.d.). Horizontal Axis Wind Turbine. Retrieved November 21, 2013, from
(Vertical Access Wind Turbines) Vertical Access Wind Turbines. (n.d.). Vertical Access Wind Turbines. Retrieved November 21, 2013, from
(Vertical axis wind turbine)Vertical axis wind turbine. (n.d.). Panoramio. Retrieved November 21, 2013, from
Research References
Picture References
(Centurion Energy
(Centurion Energy
(Centurion Energy
(Centurion Energy)
(Centurion Energy)
(Horizontal Axis Wind Turbine)
(Vertical Access Wind Turbines)
(Vertical axis wind turbine)
(Horizontal Axis Wind Turbine)
(Energy 101)
(Energy 101)
Wind Power Facts
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