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Solar selective absorbing film series suitable for medium-high temperature heat usage and preparation method thereof

A solar energy and selective technology, applied in the field of photothermal conversion materials and heat absorbing films for solar collectors, can solve the problem of high emissivity of absorbing films, and achieve the effect of reducing heat loss, high thermal stability and maintaining stability.

Active Publication Date: 2015-05-13
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Currently published TiN x o y Emissivity remains high in absorbing film patents

Method used

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  • Solar selective absorbing film series suitable for medium-high temperature heat usage and preparation method thereof
  • Solar selective absorbing film series suitable for medium-high temperature heat usage and preparation method thereof
  • Solar selective absorbing film series suitable for medium-high temperature heat usage and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A solar selective absorption film system 1 suitable for medium and high temperature heat utilization and a preparation method thereof.

[0047] The structure of this absorption film system 1 is as attached figure 1 As shown, the thickness composition of each film layer is as follows:

[0048] Copper foil substrate / silver thin film (100nm) / copper thin film (20nm) / TiAl x N y o z Thin film (88nm) / ZnSnSbO x Thin film (60nm) / SiO 2 Thin film (86nm).

[0049] The reflectance spectrum of the film is attached to figure 2 As shown, according to the national standard GB / T6424-2007 and GB / T 4271-2007, the technical indicators of the film system are as follows:

[0050] The absorption rate reaches 96.4%, and the emission rate is 1.9%.

[0051] Taking the process parameters of the magnetron sputtering equipment used in this embodiment as an example, the preparation method of this absorbing film system is as follows:

[0052] First, a silver film was plated on a copper foil ...

Embodiment 2

[0057] A solar selective absorption film system 2 suitable for medium and high temperature heat utilization and a preparation method thereof.

[0058] The structure of this absorbing film system 2 is as attached figure 1 As shown, the thickness composition of each film layer is as follows:

[0059] Al foil substrate / silver thin film (150nm) / copper thin film (10nm) / TiAl x N y o z Thin film (40nm) / ZnSnSbO x Thin film (150nm) / SiO 2 Thin film (50nm).

[0060] The reflection spectrum of the film system is attached image 3 As shown, according to the national standard GB / T6424-2007 and GB / T 4271-2007, the technical indicators of the film system are: the absorption rate reaches 96.2%, and the emissivity rate is 1.8%.

[0061] Taking the process parameters of the magnetron sputtering equipment used in this embodiment as an example, the preparation method of this absorbing film system is as follows:

[0062] First, a silver film was plated on a copper foil substrate with a silv...

Embodiment 3

[0067] A solar selective absorption film system 3 suitable for medium and high temperature heat utilization and a preparation method thereof.

[0068] The structure of this absorption film system 3 is as attached figure 1 As shown, the thickness composition of each film layer is as follows:

[0069] Stainless steel foil substrate / silver thin film (200nm) / copper thin film (5nm) / TiAl x N y o z Thin film (150nm) / ZnSnSbO x Thin film (40nm) / SiO 2 Thin film (150nm).

[0070] The reflection spectrum of the film system is attached Figure 4 As shown, according to the national standard GB / T6424-2007 and GB / T 4271-2007, the technical indicators of the film system are: the absorption rate reaches 97.2%, and the emissivity is 2.0%.

[0071] The preparation method of this coated glass is as follows:

[0072] First, a silver film was plated on a copper foil substrate with a silver target, with a thickness of 200nm, the sputtering power was 1kW, and the argon flow rate was 50 sccm; t...

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Abstract

The invention discloses a solar selective absorbing film series suitable for medium-high temperature heat usage and a preparation method of the solar selective absorbing film series suitable for the medium-high temperature heat usage. The solar selective absorbing film series comprises infrared high-reflective silver film plated on a metal base bottom, copper film, titanium aluminum nitrogen oxygen film, zinc tin antimony oxide film and silica film from top to bottom in sequence. Solar energy absorbance of the absorbing film series is larger than 96 percent, emittance is smaller than 2 percent, and the absorbing film series has the advantages of being super-low in emittance and high in photothermal conversion efficiency. Film plating rate of the zinc tin antimony oxide materials in the film series is high, and improvement of producing efficiency is benefited. The absorbing film series can be widely used in heat collectors of solar energy photothermal conversion, suitable for application of solar heat usage in construction integrated products, and especially suitable for wide application of medium-high temperature solar energy heat usage products. The solar selective absorbing film series suitable for medium-high temperature heat usage can be continuously plated on a base bottom with a large area through an industrialized magnetic control sputtering preparing method, and low-cost large-scale high-efficient producing is achieved.

Description

technical field [0001] The invention relates to the field of heat-absorbing films for solar heat collectors and light-to-heat conversion materials, in particular to a solar selective absorbing film system suitable for medium-high temperature heat utilization and a preparation method thereof. technical background [0002] With the rapid development of modern society and economy, the human demand for energy is increasing. However, the reserves of traditional energy such as coal, oil, and natural gas continue to decrease and become increasingly scarce, resulting in rising prices. At the same time, the environmental pollution caused by conventional fossil fuels is also becoming more and more serious. These greatly limit the development of society and the improvement of human life quality. . Energy issues have become one of the most prominent issues in the contemporary world. Therefore, seeking new energy sources, especially non-polluting clean energy sources has become a resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/48B32B15/04C23C14/35C23C14/06C23C14/08C23C14/10C23C14/14C23C14/16
CPCF24S70/225F24S70/30Y02E10/40
Inventor 陆卫陈飞良王少伟俞立明刘星星简明郭少令陈效双王晓芳
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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