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Solar selective absorbing coating

An absorbing coating and selective technology, applied in the field of solar energy, can solve the problems of limited high temperature application and wide spectral transition region

Inactive Publication Date: 2014-02-12
YIKEBO ENERGY TECH SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a solar energy selective absorption coating, which solves the problem of limited high temperature application caused by the wide spectral transition region of the existing selective absorption coating

Method used

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Embodiment Construction

[0022] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings. The same or similar components in the figures are denoted by the same reference numerals.

[0024] figure 1 A first embodiment of the solar selective absorbing coating of the present invention is shown, see figure 1 , The solar selective absorbing coating comprises: a metal reflective layer 1 and a semiconductor absorbing layer 2 formed on the met...

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Abstract

The invention relates to the technical field of solar energy and discloses a solar selective absorbing coating. The solar selective absorbing coating comprises a metallic reflective layer and a semiconductor absorption layer formed on the metallic reflective layer, wherein the metallic reflective layer is prepared from Al, and the semiconductor absorption layer is prepared from Ge. According to the solar selective absorbing coating, the advantage that a Ge semiconductor is steep in energy band cutoff and has little adverse effect on the low infrared emissivity of metal Al is effectively exerted, so that a solar-system heat collector can absorb solar spectra to the maximum and effectively inhibit infrared radiation, and the limitations to the high-temperature application of the traditional selective absorbing coatings are broken through.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a solar selective absorption coating. Background technique [0002] Solar energy is an inexhaustible clean energy. However, due to its low energy density after reaching the earth, it brings difficulties to large-scale development and utilization. This determines that before solar energy is directly used in daily life and industrial production, the energy density of solar energy must be increased. The solar selective absorbing coating has a high absorption rate of visible light, but its own infrared radiation rate is very low, which can convert low-grade solar energy into high-grade heat energy, and enrich solar energy. Solar energy is an indispensable Inexhaustible clean energy, however, brings difficulties to large-scale development and utilization due to its low energy density after reaching the earth. This determines that before solar energy is directly used in daily li...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/48B32B15/04B32B9/04
CPCY02E10/40
Inventor 项晓东
Owner YIKEBO ENERGY TECH SHANGHAI
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