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Metal-medium multilayered structure color-adjustable sun photo-thermal absorbing coating

A multi-layer structure, metal coating technology, applied in solar thermal devices, solar thermal power generation, metal layered products, etc., can solve problems such as limitations, and achieve low cost, easy control of the preparation process, and low infrared thermal emissivity. Effect

Inactive Publication Date: 2014-04-16
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of solar collectors is usually coated with a black absorbing coating to maximize the solar energy absorption rate, but the collector with a black surface is limited in the process of integrating with the building, because compared to black 85% of residents prefer colored solar collectors

Method used

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  • Metal-medium multilayered structure color-adjustable sun photo-thermal absorbing coating
  • Metal-medium multilayered structure color-adjustable sun photo-thermal absorbing coating
  • Metal-medium multilayered structure color-adjustable sun photo-thermal absorbing coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A purple solar heat absorbing coating and a preparation method thereof.

[0026] The solar heat absorbing coating consists of a substrate, an infrared reflective layer, an absorbing layer, and an antireflection layer from bottom to top. The absorbing layer is composed of an aluminum nitride film and a titanium film. The specific film composition is as follows:

[0027] Quartz sheet / Cu / Ti / AlN / Ti / AlN.

[0028] This embodiment takes magnetron sputtering equipment as an example, and its preparation method is as follows:

[0029] Firstly, the quartz wafer was used as the substrate, and the copper film was plated on the quartz wafer by DC magnetron sputtering. The target material used is a metal copper target, and the thickness of the copper film reaches 120 nm by sputtering for 240 seconds.

[0030] Then, DC magnetron sputtering is used to plate titanium film on the copper film. The target used is a metal titanium target. The thickness of the titanium film reaches 24 nanom...

Embodiment 2

[0034] A yellow-green solar heat absorbing coating and a preparation method thereof.

[0035] The solar heat absorbing coating consists of a substrate, an infrared reflective layer, an absorbing layer, and an antireflection layer from bottom to top. The absorbing layer is composed of an aluminum nitride film and a titanium film. The specific film composition is as follows:

[0036] Quartz sheet / Cu / AlN / Ti / AlN / Ti / AlN.

[0037] This embodiment takes magnetron sputtering equipment as an example, and the preparation method of its absorbing coating is as follows:

[0038] Firstly, the quartz plate was used as the substrate, and the aluminum film was deposited on the quartz plate by DC magnetron sputtering. The target material used is a metal aluminum target, and the thickness of the aluminum film reaches 120 nanometers by sputtering for 240 seconds.

[0039] Then, using metal aluminum as the target material, nitrogen gas was introduced as the reaction gas to plate an aluminum nitr...

Embodiment 3

[0043] A blue solar heat absorbing coating and a preparation method thereof.

[0044] The solar heat absorbing coating consists of a substrate, an infrared reflective layer, an absorbing layer and an antireflection layer from bottom to top. The absorbing layer is composed of an aluminum oxide film and a titanium film. The specific film composition is as follows:

[0045] Aluminum flake / Ag / Al 2 o 3 / Ti / Al 2 o 3 / Ti / Al 2 o 3 .

[0046] This embodiment takes magnetron sputtering equipment as an example, and the preparation method of its absorbing coating is as follows:

[0047] Firstly, the quartz wafer was used as the substrate, and the silver film was plated on the quartz wafer by DC magnetron sputtering. The target used is a metal silver target, and the thickness of the silver film reaches 120 nanometers by sputtering for 150 seconds.

[0048] Then, using metal aluminum as the target material, oxygen was introduced as the reaction gas to coat the aluminum oxide film on t...

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Abstract

The invention relates to a metal-medium multilayered structure color-adjustable sun photo-thermal absorbing coating. The coating sequentially comprises a substrate, an infrared reflection layer, an absorbing layer and a sputtering reaction layer, wherein the infrared reflection layer, the absorbing layers and the sputtering reaction layer are sequentially arranged on the substrate, the absorbing layer of the coating is formed by conducting plating on metal coatings and medium coatings in an alternate mode and includes 2 to 7 layers, and the first layer is one of the metal coatings from top to bottom. Changing of the color of the coating is achieved by changing the layer number and thickness combination of the metal coatings or the medium coatings in the absorbing layer or by changing the thickness of the sputtering reaction layer. The sun selective absorbing coating has the advantages of being high in sunlight absorptive, low in infrared emission rate, high in photo-thermal conversion efficiency, adjustable in coating color, easy in preparation process control and low in production cost, and is particularly suitable for an occasion where a solar thermal collector and a building are integrated.

Description

technical field [0001] The invention relates to the field of solar light-to-heat conversion materials and solar heat collectors, in particular to a solar-light-heat-absorbing coating with an adjustable color of a metal-medium multilayer structure. Background technique [0002] As an ideal sustainable clean energy source, solar energy has been paid close attention to by people. At present, the utilization of solar energy is mainly reflected in photothermal, photoelectric and photochemical conversion. The most direct method of solar thermal conversion is to use solar collectors with high solar light absorption and low heat emission. The surface of solar collectors is usually coated with a black absorbing coating to maximize the solar energy absorption rate, but the collector with a black surface is limited in the process of integrating with the building, because compared to black 85% of residents prefer colored solar collectors. Therefore, a solar collector with a beautiful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/48B32B15/00
CPCY02E10/40
Inventor 赖发春吴杨微杨睿华林丽梅郑卫锋
Owner FUJIAN NORMAL UNIV
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