Transparent type solar energy condenser
A solar concentrator, transmissive technology, applied in the field of solar concentrators, can solve the problems of complex structure, increased energy consumption and manufacturing costs, and achieve the effect of increasing the receiving area
Inactive Publication Date: 2010-08-25
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology
It is usually composed of light sensor, signal processing and judgment (single-chip microcomputer or computer), and driving device. Not only is the structure complex, but also it must be placed outdoors together with the concentrator. Reliability and durability have long been a big problem. problems, additionally requiring increased energy consumption and manufacturing costs
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[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0016] Referring to Fig. 1, the present embodiment constitutes the refraction-shaped transmissive solar concentrator according to Fig. 1 as shown in Fig. 1 with five shape plane Fresnel lenses, and carries out sunlight reception at the center of the sphere. From the analysis of light-gathering performance, the Fresnel lens is a non-imaging concentrator, which only needs to gather sunlight into a small area rather than a geometric ray; so the azimuth angle of the sun is 0°, ±30 °, ±60°, the incident angle of sunlight to the corresponding Fresnel lens is 0°, when the sun deviates from these special angles, there will be an incident angle not equal to 0°, then the focused light will be When the focal point is deviated, the luminous flux received by the receiver decreases.
[0017] Referring to Fig. 2, but specifically for the sunlight conveyor, it is required t...
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The present invention discloses a transmission type solar concentrator, comprising a Fresnel condensing lens group and Fresnel lenses arranged in the optical path of the Fresnel condensing lens group. The Fresnel condensing lens group has a folded-surface cambered structure. A plane Fresnel lens which forms an angle of 90 degrees with the optical axis of the Fresnel condensing lens group is arranged in front of the focus of the Fresnel condensing lens group. A concave mirror used for light finishing is arranged in front of the focus of the Fresnel condensing lens so as to enable sunshine to enter into a light receiving window with a smaller incidence angle. The Fresnel condensing lens group 1 of the present invention has the folded-surface cambered structure, so that the purpose of automatic tracking in a tracking-free condition is realized by increasing the receiving area of a condenser.
Description
technical field [0001] The invention relates to a solar concentrator, in particular to a tracking-free transmissive solar concentrator. Background technique [0002] Due to the dual pressure of energy crisis and environmental pollution, countries all over the world are investing huge manpower and material resources in the development and research of clean secondary energy, and solar energy has become one of the focus of research because it has these two characteristics at the same time; Dispersion of solar energy (1000W / m 2 ) and uncertainty, resulting in slow progress in its promotion and application; although with the continuous development of material science and automation technology, people have developed various forms of reflective and transmissive solar concentrators, such as reflective parabolic spheres (point Concentrating) and parabolic cylinder (line concentrating) and other structural forms, but their common feature is that they generally include a one-dimension...
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IPC IPC(8): G02B27/09F24J2/38G02B19/00F24S50/20
CPCY02E10/47
Inventor宁铎狄亮吴彦锐姚玺
OwnerSHAANXI UNIV OF SCI & TECH