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Medium-temperature solar thermal collector panel

A technology of solar heat collectors and heat collecting plates, applied in the field of solar heat collectors

Inactive Publication Date: 2012-10-10
SUZHOU JIAYAN ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, when the sun is deflected in the morning and afternoon, the angle between the incident light and the surface of the heat collecting tube becomes larger, and the absorption rate is further reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The heat collecting plate of the medium temperature solar heat collector of the present invention comprises a stainless steel base plate, on which a layer of nickel nitride anti-infrared reflection film, nickel oxynitride gradient absorbing film and nickel oxide anti-reflection film are sequentially arranged.

[0017] The preparation process is as follows:

[0018] Sputtering deposition of nickel nitride anti-infrared reflection film on stainless steel substrate, working pressure 0.2-1.5 Pa, reaction gas nitrogen volume 20-200Sccm; sputtering nickel oxynitride gradient absorbing film on anti-infrared reflection film, working pressure 0.2-0.8 Pa, reaction gas nitrogen and oxygen, nitrogen and oxygen volume ratio 1:1~1:10, gas volume 60-150Sccm; nickel oxide anti-reflection film is sputter deposited on nickel oxynitride gradient absorbing film, working pressure 0.2-0.8Pa, The amount of oxygen in the reaction gas is 30-200Sccm.

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Abstract

The invention relates to a medium-temperature solar thermal collector panel which comprises a stainless steel substrate. The medium-temperature solar thermal collector panel is characterized in that a nickel nitride infrared resistant reflective film, a nitrogen nickel oxide gradient absorption film and a nickel oxide antireflection film are sequentially arranged on the stainless steel substrate. The solar thermal collector panel coating has low low-temperature emissivity, so the film system is low in heat loss and high in thermal insulation property, the coating has high hardness, high wear resistance and oxidation resistance, and the electrical resistivity is low; and therefore, the solar thermal collector has excellent weather resistance and medium-temperature use performance and is suitable for the condition of the temperature between 300 DEG C and 450 DEG C.

Description

technical field [0001] The invention belongs to solar heat collectors, and more specifically, the invention relates to a heat collecting plate of a medium-temperature solar heat collector. Background technique [0002] Energy and the environment are two prominent social issues in the world today. Facing the shortage of various energy sources and environmental pollution, the search for the utilization of renewable energy has become the main direction of energy research in various countries. Solar energy is a renewable, non-polluting, and abundant resource. How to make full use of solar energy resources is to improve the energy utilization rate and utilization rate of solar collectors, and its core technology is to prepare a high absorption rate, low Emissivity, cheap selective absorbing coatings. In the field of solar heat utilization, the current development focus is on medium and high temperature heat collection, and heat collection tubes with working temperatures exceedin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/46F24J2/48C23C14/35C23C14/06C23C14/08
CPCY02E10/40
Inventor 葛波
Owner SUZHOU JIAYAN ENERGY EQUIP
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