2. Wind energy conversion is a
spellbinding field to study, if
only because its past has
been so checkered and its
exact future is so vague.
3. But unlike many of these
other industries, wind
energy has been around for
thousands of years and it's
a technology that has been
reinvented many times.
10. 500 B.C.
The development of
sail boats led directly
to the development
of the first recorded
wind powered device
in Persia (the Middle
East)…
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11. 500 B.C.
Sails were used to
drive a mill stone
for the grinding of
grain. These were
seen first in Persia,
500 BC.
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12. 500 B.C.
Some versions
were also used to
pump water for
drinking water and
for simple
irrigation of
agricultural land.
29. 20 th Century (USA)
First Use of Wind for
Large-Scale
Generation of
Electricity
30. 20 th Century (USA)
With the development of
electrical power,
scientists and
technologists developed
ways of producing
electricity through the
use of wind generators
(also known as turbines).
31. 20 th Century (USA)
In the 1930s one of the
largest experimental
machines, called the
Palmer-Putman
machine was first used.
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32. 20 th Century (USA)
This was capable
of producing 1.25
megawatts of
electricity.
33. 20 th Century (USA)
However, due to the
materials available at the
time, its effectiveness was
reduced to a great extent
and made the machine
hard to maintain.
34. 20 th Century (USA)
It had 50 meter
rotors which were
large compared to
other designs.
