Research Paper Design and optical analysis of the band-focus Fresnel lens solar concentrator

Solar energy is one of the most promising renewable energy sources and is very important for sustainable development of energy. This paper presents a new type of solar concentrator with focus Fresnel lens. The design principle of the solar concentrator was demonstrated and the spectral collection performance was simulated by Monte Carlo ray tracing (MCRT) and compared with the linear Fresnel lens. The results showed that spectral concentration uniformity and optical efficiency of the Fresnel lens by focusing are better than those of linear focusing Fresnel lenses. At the same time, analyzing some characteristic parameters of Fresnel lens concentrators with different focusing conditions, the result of the optical efficiency of the concentrating solar power generation (CPV) system is to focus the Fresnel lens concentrator from a high ratio Can be improved. In the middle.

In this paper, we have studied and compare line focused Fresnel lens solar collectors using different resonator receivers. Line focus Fresnel lens with each cavity receiver The thermal performance of a solar collector was experimentally studied at different temperature levels. Fresnel lens using different types of line focusing cavity receivers The efficiency coefficient and the heat dissipation factor of the solar collector can be obtained both theoretically and experimentally. Eight cavity receivers were tested and analyzed: triangles, curves, rectangles, semicircles, regular trapezoids, inverted trapezoids, molded trapezoids and convex shapes. The results showed that the theoretical results agree well with the experimental results. Line Focusing Fresnel Lens In the case of the solar collector, the triangular cavity receiver shows the best thermal performance. When the operating temperature is 180 ° C, the maximum experimental heat removal coefficient is about 0.805.

Thermal performance analysis of line focused Fresnel lens solar collector using different resonator receiver

Solar energy is one of the most promising renewable energy sources and is very important for sustainable development of energy. This paper presents a new type of solar concentrator with focus Fresnel lens. The design principle of the solar concentrator was demonstrated and the spectral collection performance was simulated by Monte Carlo ray tracing (MCRT) and compared with the linear Fresnel lens. The results showed that spectral concentration uniformity and optical efficiency of the Fresnel lens by focusing are better than those of linear focusing Fresnel lenses. At the same time, analyzing some characteristic parameters of Fresnel lens concentrators with different focusing conditions, the result of the optical efficiency of the concentrating solar power generation (CPV) system is to focus the Fresnel lens concentrator from a high ratio Can be improved. In the middle.