Comparison-based optical study on a point-line-coupling-focus system with linear Fresnel heliostats | Zendy

Yanjun Dai | Zendy; Xian Li | Zendy; Lingyu Zhou | Zendy; Xuan Ma | Zendy; R.Z. Wang | Zendy

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Comparison-based optical study on a point-line-coupling-focus system with linear Fresnel heliostats

Author(s) -

Yanjun Dai,

Xian Li,

Lingyu Zhou,

Xuan Ma,

R.Z. Wang

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.00a966

Subject(s) - optics , heliostat , reflector (photography) , fresnel number , ray tracing (physics) , fresnel zone , hyperboloid , focus (optics) , distributed ray tracing , fresnel lens , nonimaging optics , beam (structure) , optical engineering , physics , geometrical optics , solar energy , diffraction , engineering , lens (geology) , light source , electrical engineering

Concentrating the concept of a beam-down solar tower with linear Fresnel heliostat (PLCF) is one of the feasible choices and has great potential in reducing spot size and improving optical efficiency. Optical characteristics of a PLCF system with the hyperboloid reflector are introduced and investigated theoretically. Taking into account solar position and optical surface errors, a Monte Carlo ray-tracing (MCRT) analysis model for a PLCF system is developed and applied in a comparison-based study on the optical performance between the PLCF system and the conventional beam-down solar tower system with flat and spherical heliostats. The optimal square facet of linear Fresnel heliostat is also proposed for matching with the 3D-CPC receiver.

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