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APPLICATION (S): Parabolic Troughs

DESCRIPTION:  Troughs are long, curved mirrors heliostats that focus or concentrate sunlight onto receiver tubes filled with a circulating heat transfer fluid. The fluid can reach very high temperatures (up to 400oC). These high-temperature systems are used primarily in commercial and industrial applications.


Paravolic troughs track the sun along one axis, concentrating the energy on to a receiver tube to be located at the trough focal point. The receiver tubes are filled with some type of heat transfer medium such as oil or water, which is used to power a steam turbine or generator via heat exchanges.


Parabolic troughs assembled in collector fields are responsible for almost all commercially produced solar thermal power.


SPECIALIZED EQUIPMENT: Parabolic reflectors (heliostats), Receiver tubes


MANUFACTURER (S): Pilkington Solar International


COUNTRIES TECHNOLOGY IS UTILIZED: USA, Germany, Spain, Israel


INFORMATION SOURCES


i.    Article(s):
ii.    Publication(s)
?    Renewable Energy Technologies: A review of status and costs of selected technologies. 1994. A world Bank Technical Paper number 240
iii.    Internet site(s):
?    The Australia Renewable Website (Austria Greenhouse Office)
?    The International Energy Agency Solar PACES Website
?    EREN Website


COSTS

i.    Capital or initial costs: US$2,800 /kW for 80 – 100 MW
ii.    Operation and maintenance cost: 2 – 4 USc/kWh
iii.    Fuel energy costs: USc 12 – 31 kWh


CAPACITY: <100MW


OUTPUT RANGE:


INPUTS / RAW MATERIALS UTILIZED TO PRODUCE: Solar Energy, Water (to generate steam), Transfer fluid or media


ORGANIZATION (S) PROMOTING TECHNOLOGY: International Energy Agency (IEA), USDOE, Australia Greenhouse Office



Category/ies:Solar Tech.
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