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Heat collecting plate of solar heat collecting device

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

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

AI Technical Summary

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 solar heat collector of the present invention comprises a stainless steel base plate, on which a layer of aluminum nitride anti-infrared reflection film, aluminum oxynitride gradient absorbing film and aluminum oxide anti-reflection film are sequentially arranged.

[0017] The preparation process is as follows:

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

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PUM

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Abstract

The invention relates to a heat collecting plate of a solar heat collecting device. The heat collecting plate comprises a stainless steel base plate and is characterized in that an aluminum nitride anti-infrared reflecting film, an aluminum oxynitride gradually-changing absorbing film and an aluminum nitride antireflection film are sequentially arranged on the stainless steel base plate. A coating layer of the stainless steel base plate has low low-temperature emitting rate, so that a film system has low heat loss and good heat-preserving performance. In addition, the coating layer is made of a high-hardness abrasion-resisting anti-oxidizing material and has low resistivity, so that the weather resistance and the intermediate-temperature using performance of the heat collecting device are excellent, and the heat collecting plate is suitable for being used at the temperature of 300-450 DEG C.

Description

technical field [0001] The invention belongs to a solar heat collector, and more specifically, the invention relates to a heat collecting plate of a 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 exceeding 400°C can be use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/46F24J2/50
CPCY02E10/40
Inventor 葛波
Owner SUZHOU JIAYAN ENERGY EQUIP
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