Environmental Engineering Reference
In-Depth Information
1.4.5.3 
Nacelles
The.nacelle.contains.an.array.of.complex.machinery.including.yaw.drives,.
blade. pitch. change. mechanisms,. drive. brakes,. shafts,. bearings,. oil. pumps.
and.coolers,.controllers,.and.more.
1.4.5.4 
Towers
Low-cost. materials. are. especially. important. in. towers. because. towers. can.
represent.as.much.as.65.percent.of.the.weight.of.the.turbine..Concrete.in.tow-
ers.has.the.potential.to.be.low.in.cost,.but.may.involve.nearly.as.much.steel.
in.the.reinforcing.bars.as.a.conventional.steel.tower.
References
. 1.. Dvorak,. P.. 2010.. Wind. power. engineering—Wind. power. design.. Online. at:.
www.windpowerengineering.com.(accessed.September.22,.2011).
. 2.. TPI. Composites,. Inc.. 2010.. 20. percent. wind. energy. by. 2030.. Online. at:.
www.20percentwind.org.(accessed.July.20,.2010).
. 3.. Brondsted,.P.,.H..Lilholt,.and.A..Lystrup..2005.. Composite material for wind power tur-
bine blades. .Roskilde,.Denmark:.Annual.Reviews,.A.Nonproit.Scientiic.Publisher..
email:.povlbrondsted@risoe.dk,.hans.lilholt@risoe.dkaage.Lustrup@risoe.dk
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D.C.:.Department.of.Energy..www1.eere.energy.gov.(accessed.July.29,.2010).
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sheet. .Washington,.D.C.:.U.S..Department.of.Energy,.Princeton.Energy.Resources.
International,.LLC.
. 6.. IEA.Annual.Report..2001.. Implementing agreement for co-operation in the research
and development of wind turbine systems ..Paris:.International.Energy.Agency.
. 7.. AWEA. Market. Report.. 2001.. Wind energy growth was steady in 2000, Outlook
for 2001 is bright. Minneapolis:.American.Wind.Energy.Association..Online.at:.
www.awea.org/fag/Global105-2001.PDF.(accessed.July.29,.2010).
. 8.. American. Wind. Energy. Association,. 2001.. Wind project database: Wind energy
projects throughout the United States ..Online.at:.www.awea.org/projects/index.
html.(accessed.July.29,.2010).
. 9.. Department. of. Energy.. 2001.. Wind power today .. Washington,. D,C,:. DOE/
GO-102001-1325.
. 10.. Electric. Power. Research. Institute. and. DOE.. 1997.. Renewable energy technology
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. 11.. Wind. Turbine. OEMS. Global. Market. Share. Report. for. 2009,. online. at:. www.
windonline.org/2010/03/wtg-oem-market-shares-2009.html.(accessed.July.29,.
2010).
 
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