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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 35 — Dec. 10, 2013
  • pp: 8586–8616

Theory and design of line-to-point focus solar concentrators with tracking secondary optics

Thomas Cooper, Gianluca Ambrosetti, Andrea Pedretti, and Aldo Steinfeld  »View Author Affiliations


Applied Optics, Vol. 52, Issue 35, pp. 8586-8616 (2013)
http://dx.doi.org/10.1364/AO.52.008586


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Abstract

The two-stage line-to-point focus solar concentrator with tracking secondary optics is introduced. Its design aims to reduce the cost per m 2 of collecting aperture by maintaining a one-axis tracking trough as the primary concentrator, while allowing the thermodynamic limit of concentration in 2D of 215 × to be significantly surpassed by the implementation of a tracking secondary stage. The limits of overall geometric concentration are found to exceed 4000 × when hollow secondary concentrators are used, and 6000 × when the receiver is immersed in a dielectric material of refractive index n = 1.5 . Three exemplary collectors, with geometric concentrations in the range of 500 1500 × are explored and their geometric performance is ascertained by Monte Carlo ray-tracing. The proposed solar concentrator design is well-suited for large-scale applications with discrete, flat receivers requiring concentration ratios in the range 500 2000 × .

© 2013 Optical Society of America

OCIS Codes
(080.0080) Geometric optics : Geometric optics
(220.1770) Optical design and fabrication : Concentrators
(350.6050) Other areas of optics : Solar energy
(080.4035) Geometric optics : Mirror system design
(080.4298) Geometric optics : Nonimaging optics

ToC Category:
Geometric Optics

History
Original Manuscript: September 25, 2013
Manuscript Accepted: October 20, 2013
Published: December 9, 2013

Citation
Thomas Cooper, Gianluca Ambrosetti, Andrea Pedretti, and Aldo Steinfeld, "Theory and design of line-to-point focus solar concentrators with tracking secondary optics," Appl. Opt. 52, 8586-8616 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-35-8586

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