Environmental Engineering Reference
In-Depth Information
producer.of.wind.turbines.and.the.second-largest.producer.of.wind.power.
after.the.United.States. 12
According.to.the.Global.Wind.Energy.Council,.China.is.expected.to.remain.
one.of.the.main.drivers.of.global.growth.in.the.coming.years.with.annual.
additions.of.more.than.20.GW.by.2014..This.development.is.supported.by.a.
very.aggressive.government.policy.and.the.growth.of.the.domestic.industry..
The.Chinese.government.has.an.unoficial.target.of.150.GW.of.wind.capacity.
by.2020.
1.4.4.2 
About Owens Corning
Owens. Corning. is. a. leading. global. producer. of. glass. iber. reinforcements.
and. engineered. materials. for. composite. systems. and. residential. and. com-
mercial.building.materials..
The.business.delivers.a.broad.range.of.reinforcement.products.that.provide.
lightweight. alternatives. to. steel,. wood,. and. aluminum,. thereby. reducing.
weight.and.improving.energy.eficiency..Additional.information.is.available.
at.www.owenscorning.com.
1.4.4.3 
Wind Turbine Database
The. wind. turbine. database. consists. of. the. power. ranges. of. turbo.
machines.. The. wind. turbine. database. was. completed. from. a. variety. of.
industrial,.DOE.laboratory,.and.existing.resources..Much.of.the.wind.tur-
bine. components'. characteristics. and. weight. data. came. from. the. DOE,.
Wind. Partnerships. for. Advanced. Technologies. program. database,. their.
subcontractors,. as. well. as. directly. from. turbine. manufacturers,. such. as.
TPI. Composites,. Inc.. Twenty-eight. types. and. models. of. turbines. were.
analyzed, 5 . ranging. from. small. models. for. direct. current. (DC). battery.
changing.to.large.grid.connected.alternating.current.(AC).machines.cur-
rently.commercially.available.and.being.employed.in.100.to.200.MW.wind.
power. plants.. Very. large. multimegawatt. machines. being. designed. for.
future.wind.farm.applications,.both.on-.and.off-shore.also.were.included.
in.the.future.market..The.speciic.current.models,.type,.and.size.are.listed.
in.Table 1.2.
The.actual.unit.production.and.sales.data.incorporated.in.the.market.share.
database. is. considered. proprietary. by. the. manufacturers.. These. data. were.
used.in.estimating.weights.of.materials.shown.in.Table 1.3.
Approximately. half. of. the. small. turbine. market. measured. in. MW. is.
direct.drive.with.no.gearbox..The.trends.in.design.and.manufacturing.dif-
fer.between.small.and.large.turbines..Small.machines.tend.to.use.lighter-
weight. castings. in. an. effort. to. reduce. costs.. Many. parts. in. small. turbines.
are.die.cast.aluminum,.while.in.large.machines,.steel.castings.or.forgings.
are.needed.to.meet.strength.and.structural.fatigue.requirements..The.size.
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