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Compound parabolic concentrator (CPC) solar energy concentration and photovoltaic power generation combined application device

A solar concentrator and combined application technology, applied in the field of solar energy applications, can solve the problems of high operating costs, low utilization efficiency, and differentiated utilization, and achieve the effects of high utilization efficiency, reduced heat load, and improved output performance

Inactive Publication Date: 2013-07-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing solar energy application systems do not differentiate the use of infrared and visible light in solar radiation energy, and the utilization efficiency is low.
The existing device has high processing costs and high operating costs

Method used

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  • Compound parabolic concentrator (CPC) solar energy concentration and photovoltaic power generation combined application device
  • Compound parabolic concentrator (CPC) solar energy concentration and photovoltaic power generation combined application device
  • Compound parabolic concentrator (CPC) solar energy concentration and photovoltaic power generation combined application device

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specific Embodiment approach 1

[0018] Specific implementation mode one: as Figure 1~3 As shown, the combined application device of CPC solar energy concentration and photovoltaic power generation described in this embodiment includes a CPC solar concentrator 1, a coated quartz glass layer 2, a solar photovoltaic cell 3 and a foamed quartz medium layer 4. In the CPC solar concentrator 1 The coated quartz glass layer 2 is arranged in the inner cavity (or inner surface) of the solar concentrator 1, and the solar photovoltaic cell 3 is arranged between the coated quartz glass layer 2 and the inner wall surface of the CPC solar concentrator 1, and the coated quartz glass layer 2 and the solar photovoltaic cell 3 The foamed quartz medium layer 4 is filled between them; the coated quartz glass layer 2 is composed of a quartz glass layer and a selective coating, and the selective coating is plated on the inner surface of the quartz glass layer; the coated quartz glass layer 2 Selective coatings are used to transmi...

specific Embodiment approach 2

[0029] Embodiment 2: In this embodiment, the quartz glass used to make the quartz glass layer is spliced ​​and assembled by unit blocks. This can reduce the processing difficulty of the quartz glass CPC type curved surface. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: The selective coating in this embodiment is a magnesium fluoride film. This selective coating has low reflectivity (visible light between 0.3 μm and 0.8 μm) and high reflectivity for infrared radiation (greater than 0.8 μm). Other compositions and connections are the same as those in Embodiment 1 or 2.

[0031] The device of the present invention sequentially arranges solar photovoltaic cells, foamed quartz medium, quartz glass on the inner surface of the CPC, and the quartz glass is coated with a characteristic thin film that transmits visible light and reflects infrared. The reflected infrared wave enters the heat absorber and is transformed into heat energy. Visible light passes through the quartz glass, is reflected and refracted by the foamed quartz glass for many times, and is evenly incident on the surface of the solar cell to output electric power. According to the change of the incident angle of sunlight, the distribution ratio of light heat and ...

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Abstract

A compound parabolic concentrator (CPC) solar energy concentration and photovoltaic power generation combined application device relates to a solar energy concentration and photovoltaics combined application device, belongs to the technical field of solar energy application, aims at separately using infrared light and visible light in solar radiation energy, and has good utilization efficiency. A solar photovoltaic battery, foam quartz glass and quartz glass are sequentially arranged on the inner surface of a CPC, wherein visible light is covered on the quartz glass in plating mode to reflect feature films of infrared. Reflected infrared waves enter a heat absorber to be converted into heat energy, visible light penetrates through the quartz glass and is reflected and refracted for multiple times by the foam quartz glass and uniformly irradiated onto the surface of the solar energy, and electric power is output. According to changes of sunlight incident angles, distribution proportion of optothermal quantity and photoelectrical quantity of a system is adjusted. The CPC solar energy concentration and photovoltaic power generation combined application device comprehensively uses solar energy, can provide heat energy and power supply power, is simple in processing and operating, and has huge application potential.

Description

technical field [0001] The invention relates to a technical device for combined application of solar energy concentration and photovoltaic, belonging to the technical field of solar energy application. Background technique [0002] Solar energy resources are abundant, clean and easy to obtain. The development of efficient solar energy utilization technology is of great significance to energy saving, emission reduction, environmental improvement, and meeting the power requirements of space vehicles. The traditional solar energy application system is a single photothermal or photoelectric conversion system, which has not been comprehensively developed according to the spectral characteristics of solar energy, and the utilization efficiency is low. CPC has good receiving characteristics and does not need to accurately track the sun. It has important application potential in high-temperature solar fields such as seawater desalination, large-scale hydrogen production, and thermal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/00F24J2/48H02N6/00H02S40/22H02S40/44
CPCY02E10/40Y02E10/52Y02E10/60
Inventor 夏新林戴贵龙孙创艾青
Owner HARBIN INST OF TECH
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