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Multifunctional spectrum selective encapsulation material

A packaging material and selective technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problems that the solar PV/T system cannot work at night and the radiation cooling system cannot work during the day

Active Publication Date: 2016-09-21
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem that the traditional solar PV / T system cannot work at night and the traditional radiant cooling system cannot work during the day, this invention utilizes the high consistency in structure and the complementarity of working time between the two, and proposes a system that satisfies both Photoelectric conversion-light-to-heat conversion-multifunctional spectrally selective encapsulation materials for night-time radiative cooling

Method used

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  • Multifunctional spectrum selective encapsulation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 , a multifunctional spectrally selective packaging material includes a substrate 1, the material of the substrate 1 is an anodized aluminum plate with good thermal conductivity; one side of the substrate 1 is provided with a black polyvinyl fluoride-polyester-polyvinyl fluoride ( TPT) material layer 2; polyvinyl fluoride-polyester-polyvinyl fluoride (TPT) material layer 2 is installed with a photovoltaic cell 3, and the photovoltaic cell 3 is a monocrystalline silicon photovoltaic cell; the photovoltaic cell 3 is provided with a spectrally selective composite material Layer 4, the thickness of which is 25 μm, a simplified illustration of the spectral properties of the spectrally selective composite material layer 4 see figure 2 , the spectrally selective composite material layer 4 is made of a composite of a selective reflection film 5 and a selective emission film 6, and the simplified schematic diagrams of the spectral characteristics of the selective r...

Embodiment 2

[0031] The photovoltaic cell material is a polysilicon photovoltaic cell, and the selective reflection film 5 is indium oxide (In 2 o 3) thin film with a thickness of 12.5 μm, a transmittance greater than 0.9 in the solar radiation band of 0.2-3 μm, and a reflectance greater than 0.9 in other bands. The selective emission film 6 is a polyvinyl fluoride film with a thickness of 12.5 μm. The emissivity in the “atmospheric window” band of 8-13 μm is greater than 0.8, and the transmittance in other bands is greater than 0.9.

[0032] The spectrally selective composite material layer 4 has a thickness of 25 μm, its transmittance in the solar radiation band of 0.2-3 μm is greater than 0.8, its emissivity in the “atmospheric window” band of 8-13 μm is greater than 0.8, and its transmittance in the band above 13 μm is greater than 0.8. The reflectance is greater than 0.9.

[0033] Other structures are with embodiment 1.

Embodiment 3

[0035] The photovoltaic cell material is an amorphous silicon photovoltaic cell.

[0036] Other structures are with embodiment 1.

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Abstract

The invention relates to a multifunctional spectrum selective encapsulation material. The material comprises a substrate, and a black polyvinyl fluoride-polyester-polyvinyl fluoride (TPT) material layer, a photovoltaic cell and a spectrum selective composite material layer are sequentially arranged on one side of the substrate; and the spectrum selective composite material layer is compounded by a selective reflective film and a selective emission film. The transmittance of the spectrum selective composite material layer at the solar radiation band of 0.2-3mu m is more than 0.8, the emissivity at the ''atmospheric window'' band of 8-13mu m is more than 0.8, and the reflectivity at the band of more than 13mu m is more than 0.9. By adopting the material, electric energy and heat can be obtained by day via solar photovoltaic heating, and cold can also be obtained at night via radiation refrigeration, so that the limitations of traditional solar PV / T systems and radiation refrigeration devices are effectively solved.

Description

technical field [0001] The invention belongs to the field of energy utilization technology, and in particular relates to the comprehensive utilization of solar photovoltaic light and heat and the application of radiation refrigeration. Background technique [0002] Solar photovoltaic photothermal comprehensive utilization (PV / T) technology refers to a form of solar energy utilization that absorbs solar energy through PV / T collectors and simultaneously obtains electrical energy and thermal energy. subject to research and attention. [0003] Radiation cooling technology refers to the radiative heat exchange between the normal temperature object on the surface and the very low temperature outer space through the 8~13μm band of the "atmospheric window", and the radiative heat exchange with the relatively low temperature atmosphere, so as to achieve a certain temperature. Passive cooling method for cooling effect. Compared with the traditional vapor compression refrigeration me...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/054H01L31/0525
CPCY02E10/52H01L31/0481H01L31/054H01L31/0547
Inventor 裴刚胡名科曹静宇赵斌季杰
Owner UNIV OF SCI & TECH OF CHINA
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