We have a daily need of a huge amount of electricity and
there is a lot of ways to get it. Of course there’s both better
and worse ways to extract energy and one of the better ways is wind
power. The spreading of wind power in Sweden is so far not so big
but it’s on its way in the development.
Wind power is a good idea if you want to protect the
environment. Wind power stations convey no atmospheric pollutions
and it’s renewable. Other positive things about wind power are
that the nature is saving carbon, uranium and the spread of ash. They
are also easy to remove and you can recycle every single part of a
wind power station.
Wind power stations are getting bigger, better and the development
is getting forward.
How does wind power work?
A wind power station is built so it can catch the motion energy
in the wind. The motion energy goes from the wind in to the propeller
which starts to rotate. The propeller contains a turbine that is
attached to a generator. When the turbine begins to rotate the generator
makes electricity to the energy net and then the electricity is
ready to use in our homes. The effectivity depends on how big wind
amount that hits the propeller. More electricity is produced if
the wind amount is bigger. However that isn’t the only thing that
affects the effectivity, the size of the propeller is also important.
It’s the same principle; if the propeller is bigger the effectivity
gets bigger too.
Development
In present investigations there are people who are check if there
is a possibility that wind power stations can be built out in the
sea. They do this because there are a lot of benefits with building
in the sea. For example the main benefits are that it’s possible
to make bigger wind power stations and it's more energy in the wind.
The most appropriate place to put a wind power station is where
it’s about 10 to 35 meters deep. It’s very expensive with wind power
stations out in the sea but on the other hand it’s a pretty new
technique and it’s still developing, which is a very positive thing.
