Compact high-flux two-stage solar collectors based on tailored edge-ray concentrators

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Solar Energy

DOI:https://doi.org/10.1016/0038-092X(96)00015-1· OSTI ID:501969

Friedman, R P ^[1]; Gordon, J M ^[1]; Ries, H ^[2]

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1. Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel)
2. Paul Scherrer Inst., Villigen (Switzerland)

The recently-invented tailored edge-ray concentrator (TERC) approach permits the design of compact two-stage high-flux solar collectors, with a focusing primary reflector and a non-imaging TERC secondary reflector. We present a new primary reflector shape based on the TERC approach and a secondary TERC tailored to its particular flux map, such that more compact concentrators emerge at flux concentration levels in excess of 90% of the thermodynamic limit. Calculations and raytrace simulation results are also offered which demonstrate that V-cone approximations to a wide variety of TERCs attain the concentration of the TERC to within a few percent. These V-cones represent practical secondary concentrators that may be superior to corresponding compound parabolic concentrator or trumpet secondaries. 13 refs., 5 figs., 2 tabs.

• OSTI ID: 501969
• Journal Information: Solar Energy, Journal Name: Solar Energy Journal Issue: 6 Vol. 56; ISSN SRENA4; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
99 GENERAL AND MISCELLANEOUS
CALCULATION METHODS
DESIGN
PERFORMANCE
SIMULATION
SOLAR COLLECTORS
SOLAR CONCENTRATORS
SOLAR FLUX
SOLAR REFLECTORS