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Advanced composites for stressed-membrane heliostats

Author

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  • Ramohalli, K.
  • Butler, B.
  • Visvanathan, G.

Abstract

The concept of achieving ultra low cost (∼- $20/m2) and ultra low weight (5 kg/m2) for heliostats is explored theoretically and experimentally; the full-scale size is up to 15-m diameter. The basic innovation of a taut fishnet supporting a stretched membrane across a ring frame is the central theme. Variations include double membranes—a reflective membrane over a structural membrane which can be composed of steel wires or graphite fiber-polymer matrix composites. Wood and graphite composites may be used for the ring frame. The non-linear problem of stress-strain analysis is formulated and solved using NASTRAN. At the time of this reporting, results for the smaller sizes are available. The analysis provides a basis for the design, fabrication, and cost estimates.

Suggested Citation

  • Ramohalli, K. & Butler, B. & Visvanathan, G., 1987. "Advanced composites for stressed-membrane heliostats," Energy, Elsevier, vol. 12(3), pages 245-259.
    • Handle: RePEc:eee:energy:v:12:y:1987:i:3:p:245-259
    DOI: 10.1016/0360-5442(87)90083-1
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