Fixed mirror solar concentrator for power generation
Conference
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OSTI ID:6808304
The General Atomic Company (GA) Fixed Mirror Solar Concentrator (FMSC) employs a fixed mirror trough that produces a sharp line focus regardless of sun position. The heat receiver, which employs a compound parabolic (Winston) secondary concentrator, is moved in a circular arc to track the focal line. With secondary concentration the FMSC has a theoretical upper concentration limit of 206 suns, and the secondary concentrator makes possible the design of a practical FMSC to efficiently generate steam at modern steam plant operating conditions. Because the mirror trough of the FMSC is stationary, it can be made using low-cost type construction approaches. General Atomic has fabricated FMSC modules of precast concrete and glass mirrors to supply a 260-m/sup 2/ collector field to Sandia Laboratories for their Solar Total Energy Demonstration Facility. These modules were constructed on-site at Sandia using local labor. The combination of concrete substrate and glass mirrors yields a rugged, low-maintenance concentrator that has good potential for low-cost, high volume, on-site construction. Scientific Atlanta, Inc., has developed another construction approach based on supporting the glass mirrors with inexpensive metal stampings. These structures can be quickly assembled in the field.
- Research Organization:
- General Atomic Co., San Diego, Calif. (USA); Georgia Inst. of Tech., Atlanta (USA). School of Mechanical Engineering
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 6808304
- Report Number(s):
- GA-A-14883; CONF-780425-3
- Country of Publication:
- United States
- Language:
- English
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