http://avxhome.se/blogs/crazy-slim

(Sean Pound) #1
LIMITATIONS
Electricity can only be
generated when the
wind blows, which may
not always be constant.
Birds and bats can also be
killed when they crash into
the blades of the windmill.
A large amount of land
is required to set up a
wind farm.

Wind is created when air is is heated by the sun.
Warm air rises, causing areas of what we call “low
air pressure” – the air has literally taken some
pressure of f as it rises up. All processes on Ear th
are about creating balance, and so air that is at
a higher pressure (i.e., a bit cooler) will move in to
“balance” the low pressure area. This movement
of air causes the wind. There is a bit more to it, of
course, but this is the general idea.
Getting power from the wind is quite simple.
All it needs is a windmill with sails that are
turned by the movement of the air, which turn a
turbine that powers a generator.
Wind is ever ywhere! And the low cost of
building wind turbines means that wind power
is one of the fastest-growing kinds of renewable
energy in the world.


THE WIND


GOING GREEN!
Free download pdf