by: nikitha and shikha. what is wind energy? a source of energy that is driven by the force of wind....
TRANSCRIPT
Wind EnergyBy: Nikitha and Shikha
What is Wind Energy?A source of energy that is driven by
the force of wind. Wind is caused by huge convection
currents in the Earth's atmosphere, driven by heat energy from the Sun.
Wind energy is the fastest growing segment of all renewable energy sources.
For hundreds of years, we have been using wind as a form of energy. Windmills have been used for pumping water
RenewabilityWind is one of the easiest energy source to
renew. This is because wind is naturally occurring every day.
The best way to take advantage of the easily renewable nature of wind power as an energy source is to build turbines in places where wind occurs frequently.
Turbines catch the wind's energy with their propeller-like blades. they can be connected to a utility power grid or even combined with a photovoltaic (solar cell) system.
CostDue to improvements of wind turbines, the
cost of wind energy has decreased. Wind energy is one of the most affordable
energy resources in today’s economy.There was a decrease in cost of more than
90% since the early 1980's.
Pros to Wind EnergyFreeNever will run outClean, non-polluting, electricityNo air pollutants or greenhouse gases No fuel to purchase and minimal
operating expenses.
Cons to Wind EnergyTechnology requires a higher initial
investment than fossil-fueled generators.Lots of noise produced by the rotor blades.Birds and bats having been killed by flying
into the rotors.Does not always blow when electricity is
needed. Wind cannot be storedGood wind sites are often located in remote
locations far from areas of electric power demand.
The Science Behind Wind EnergyWind energy is generated through the kinetic
energy found in wind is converted into mechanical power
Wind turbines are like airplane propellers that turn as wind pushes them which powers an electric generator that supplies an electric current
The power generated in then stored in batteries for later use
Waste ProductsThere are no waster products produced from
wind energyWind energy lowers greenhouse gas
emissions
Uses of Wind EnergyWind energy is used
by states/countries that can invest into it and have a good amount of wind to power cities/townsCaliforniaDenmarkGermany
Wind energy has not been in widespread use because the land that wind turbines are put on can be used for farming which leads to choosing between what is more important – food or power
General Public Accessibility