Wind Energy Systems Gary L. Johnson (Author)

Wind Energy Systems Gary L. Johnson (Author)

Hardcover: 360 pages
Publisher: Prentice Hall; 1st Edition/1st Printing edition (January 1985)
Language: English
ISBN-10: 0139577548
ISBN-13: 978-0139577543

INTRODUCTION
Look at the ships also:, though they are so great and are driven by strong winds, they are
guided by a very small rudder wherever the will of the pilot directs. James 3:4
The wind is a free, clean, and inexhaustible energy source. It has served mankind well
for many centuries by propelling ships and driving wind turbines to grind grain and pump
water. Interest in wind power lagged, however, when cheap and plentiful petroleum products
became available after World War II. The high capital costs and the uncertainty of the wind
placed wind power at an economic disadvantage. Then in 1973, the Arab nations placed an
embargo on petroleum. The days of cheap and plentiful petroleum were drawing to an end.
People began to realize that the world’s oil supplies would not last forever and that remaining
supplies should be conserved for the petrochemical industry. The use of oil as a boiler fuel,
for example, would have to be eliminated. Other energy sources besides oil and natural gas
must be developed.
The two energy sources besides petroleum which have been assumed able to supply the
long term energy needs of the United States are coal and nuclear energy. Many people think
there is enough coal for several centuries at present rates of consumption, and likewise for
nuclear energy after the breeder reactor is fully developed. These are proven resources in the
sense that the technology is highly developed, and large coal and nuclear powered electrical
generating plants are in operation and are delivering substantial blocks of energy to the
consumer. Unfortunately, both coal and nuclear present serious environmental problems.
Coal requires large scale mining operations, leaving land that is difficult or impossible to
restore to usefulness in many cases. The combustion of coal may upset the planet’s heat
balance. The production of carbon dioxide and sulfur dioxide may affect the atmosphere and
the ability of the planet to produce food for its people. Coal is also a valuable petrochemical
feedstock and many consider the burning of it as a boiler fuel to be foolish.
Nuclear energy has several advantages over coal in that no carbon dioxide or sulfur dioxide
are produced, mining operations are smaller scale, and it has no other major use besides
supplying heat. The major difficulty is the problem of waste disposal, which, because of the
fears of many, will probably never have a truly satisfying solution.
Because of these problems, wind power and other forms of solar power are being strongly
encouraged. Wind power may become a major source of energy in spite of slightly higher costs
than coal or nuclear power because of the basically non-economic or political problems of coal
and nuclear power. This is not to say that wind power will always be more expensive than
coal or nuclear power, because considerable progress is being made in making wind power less
expensive. But even without a clear cost advantage, wind power may become truly important
in the world energy picture.
Wind Energy Systems by Dr. Gary L. Johnson October 10, 2006

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