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FLABEG collector reduces CSP cost by 25%

FLABEG, together with schlaich bergermann und partner, is working on a collector design to improve efficiency and reduce cost by up to 25% for concentrating solar power (CSP) parabolic trough plants.

By Kari Williamson

The companies are developing the CSP collector Ultimate Trough®, which could offer a 25% cost reduction of parabolic trough CSP collectors by lowering specific cost (€/m2) and improving performance.

The Ultimate Trough will be optimised for large solar fields in the range of 500,000-2,500,000 m² aperture area.

A larger diameter of the heat collection elements, supported by improved selective coatings with lower emissivity, allows a solar field design with lower specific parasitic consumption and less piping in the solar field, FLABEG says.

The number of drives, sensors and controls is reduced by more than 50%. In addition the number of units to be assembled, checked, mounted, aligned and commissioned will be reduced by larger CSP collector elements. The solar mirrors will have a dimension of 4 m2.

A prototype consisting of two CSP collector elements is currently being tested in preparation for a demonstration loop in the US where two Solar Collector Assembly (SCAs) will be running in the SEGS VIII plant during spring of the next year to validate the significant performance improvements.

The CSP collector design has been further supported by DLR (German Aerospace Center) and the FhG IML (Fraunhofer Society, Institute for material flow and logistics).

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sunrise1945 said

13 October 2011
We are working on a new design of parabolic collectors CSP Thermal plants in order to reduce the overall costs of this system by 30 - 35% with improvement in the efficiency. This will also result in lower land requirement. In order to increase the efficiciency of the system, we have targeted on;
1. The thickness of glass mirrors shall be reduced to 2.0 - 2.5mm with emphasis on accuracy of the parabolic shape.
2. Due to lighter mirrors, the weight of the supporting frames shall also be reduced considerably with lower power for movements in the tracking system.
3. We propose to use reflector coating system within the receiver tubes in order to minimize emissivity.

We are still in design stage and plan to manufacture these components shortly and then construct a prototype for testing in a years' time.
We also have plans to design parabolic dish system for CSP Thermal for operations at higher temperatures.

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