We have developed a fully planar solar-pumped fiber laser using a solid-state luminescent solar collector (LSC). This laser does not use any focusing device, such as a lens or mirror; thus, it can ...
This paper introduces a novel design of the ray-leakage-free planar illumination system supplied by solar energy. First, we design a ray-leakage-free planar solar concentrator to collect direct sunlight. As shown in Fig. 1, the solar concentrator consists of five parts: achromatic hybrid collectors, beam splitters, binary optical …
Q absorber,ref (W) is the sunlight energy absorbed by the internal wall of the liner cavity receiver when the sun declination angle and solar hour angle are 0 •, receiver internal surface ...
Despite extensive research on solar evaporation, including investigations into materials, structures, salt-resistance techniques, and thermal management [20], [21], the findings are currently limited to laboratory settings.This lack of practical configuration on a large scale poses challenges for realizing widespread practical applications.
Planar micro-optic concentrators are passive optical structures which combine a lens array with faceted microstructures to couple sunlight into a planar slab waveguide. Guided rays propagate within the slab to edge-mounted photovoltaic cells. ... Orthogonal and secondary concentration in planar micro-optic solar collectors Opt …
A Nd 3+ -doped silica fiber is coiled into a cylindrical chamber filled with a sensitizer solution, which acts as a luminescent solar collector. The body of the chamber is highly reflective...
Planar micro-optic concentrators are passive optical structures which combine a lens array with faceted microstructures to couple sunlight into a planar slab waveguide. Guided …
The proposed planar solar concentrator can make adjustment of the number of collectors according to different concentration needs, which promotes the design freedom of solar illumination systems.
2. The conventional PTC2.1. General description The conventional PTC consists of a linear parabolic shape concentrator, a linear tubular receiver and a metallic support structure. The PTC tracks the sun usually …
In this study, we proposed a two-staged, transparent, planar solar concentrator composed of stacked waveguide sheets with an arc-segment structure …
Solar thermal power generation integrates photothermal conversion power generation and low-cost, large-scale heat storage, which is the primary support for constructing a green power system with ...
This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, combining a mechanical singleaxis tracker and scrollable prism sheets, can achieve a performance on a par with dual-axis tracking while reducing the cost of the tracking …
Analogously, a planar solar concentrator based on total internal reflection with symmetrical air prism was proposed (Xie et al., 2014). The design achieved an optical efficiency of 70% at a geometrical concentration ratio of 50x.
For high concentration ratio of the planar concentrator which is mainly used for photovoltaic or solar-thermal applications, the ray-leakage must be prevented during rays propagated in the lightguide. In this paper, the design of a ray-leakage-free discal solar concentrator is proposed which provides a high concentration ratio while …
A detailed study and several key aspects of perovskite solar cells (PSCs) is provided. • The detailed introduction of the perovskite materials and its types are also discussed. • The major influential factors are also briefly …
Micro-Optic Solar Collectors," in OSA Imaging and Applied Optics Congress, STuD2 (2010). #223533 - $15.00 USD Received 22 Sep 2014; revised 30 Oct 2014; accepted 31 Oct 2014; published 13 Nov 2014
Commercial optical modeling software LightTools is used to design and simulate the geometric structure of the planar solar concentrator used in the natural illumination system. In this paper, the material of collectors, hemisphere-coupling structures and lightguide is polymethyl methacrylate (PMMA) which is one of the most …
As the most important part of the natural illumination system, the planar solar concentrator consists of three parts: collector arrays, coupling structures and a …
The aim of the present work is to compare thermal efficiency of three flat-plate collectors, which are different in the type of coatings used in the absorber plate. The thermal efficiency of the collector was investigated using three types of absorber plate: the black painted, the black chrome coating, and the carbon coating. The thermal …
This study proposed a planar solar concentrator featuring alignment-free total-internal-reflection (TIR) collectors and an innovative compound tracker. The compound tracker, …
Besides FPSWCs and ETSWCs, there are various other types of solar collectors. Reza et al. [33] provided a comprehensive overview of concentrating photovoltaic thermal (CPV/T) collectors and found they have a promising market outlook, with the potential to compete with conventional power generation systems in the near …
Design of the hemisphere coupling structure. In the hybrid collector array, the paraboloid can concentrate the emergent rays with any tilt angle. Therefore, the function of the coupling structure can be only coupling the rays without any deflection. ... Planar solar concentrator featuring alignment-free total-internal-reflection collectors …
2.1.3. Single collecting plant matching to evaporator The condensation and collection of steam have a considerable effect on the final freshwater yield, and the design of the steam collector configuration directly affects the …
A lightguide coupling method for planar waveguide solar concentrator was proposed with the total internal reflection (TIR)-based symmetric couplers placed at the focal line of each lens [29]. It achieved more than 70% optical efficiency in condition of the geometric concentration ratio of 50.
Request PDF | Improving the performance and reliability of inverted planar perovskite solar cells with a ... Here, we report on NiO-based inverted structure perovskite solar cells with a high ...
Formation of the sheet collector with arc-segment structures: (a) steps of forming a thin planar collector with an arc-segment structure; (b) Integrating three components of Fig. 1(a) into an SCAS ...
We present a waveguide coupling approach for planar waveguide solar concentrator. In this approach, total internal reflection (TIR)-based symmetric air prisms are used as couplers to increase the coupler reflectivity and to maximize the optical efficiency. The proposed concentrator consists of a line focusing cylindrical lens array over a planar waveguide. …
Contact Us