Solar energy paper index
Optical analysis of a beam-down linear Fresnel reflector coupled with a flat plate receiver
One-line summary
A solar energy research paper on Optical analysis of a beam-down linear Fresnel reflector coupled with a flat plate receiver.
Engineering notes
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Beam-down concentrating solar systems consist of two successive reflections. Compared to the conventional concentrated configurations, there are two concentrators, and the receiver is on the ground level. In the present study, a beam-down linear Fresnel reflector is investigated in optical terms. The collector is a conventional flat plate receiver. Two different secondary concentrators are examined and compared based on their optical performance. Both the secondary concentrators are hyperboloidal, intending to enhance the optical performance. The first concentrator examined has a parabolic shape. The second concentrator examined consists of flat segments, which are designed based on the parabolic profile of the previous parabolic secondary concentrator, aiming to reduce the configuration’s construction cost. The major objective of this work is to conduct an optical analysis of the proposed configurations and calculate the optical performance, the incident angle modifier, and the intercept factor for various incident angles. The maximum value for optical efficiency was calculated at 68.6% and refers to the flat-segmented design, a promising value for a concentrating solar system.
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