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parabolic trough collector
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Parabolic trough system
Image courtesy of SunLabs, Dept. of Energy
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A type of concentrating solar
collector that uses U-shaped troughs to concentrate sunlight onto a
receiver tube, containing a working fluid such as water, which is positioned
along the focal line of the trough. Sometimes a transparent glass tube envelops
the receiver tube to reduce heat loss. Parabolic troughs often use single-axis
or dual-axis tracking. In rare instances, they may be stationary. Temperatures
at the receiver can reach 400°C. The heated working fluid may be used
for medium temperature space or process heat, or to operate a steam turbine
for power or electricity generation. In California, multi-megawatt power
plants were built using parabolic troughs combined with gas turbines.
External site
Parabolic Trough
Solar Power Network, National Renewable Energy Laboratory
Related categories
• SOLAR
ENERGY AND POWER
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