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Trough-type solar medium-temperature and high-temperature collector tube

A trough solar energy and heat collector technology, applied in the field of solar heat collectors

Inactive Publication Date: 2012-10-17
SUZHOU JIAYAN ENERGY EQUIP
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  • Summary
  • 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

[0015] The heat collecting tube of the trough type solar medium and high temperature heat collector of the present invention comprises a stainless steel substrate, on which a layer of niobium anti-infrared reflection film, titanium nitrogen oxide gradient absorption film and titanium dioxide anti-reflection film are sequentially arranged.

[0016] The preparation process is as follows:

[0017] Sputtering deposition of niobium anti-infrared reflection film on stainless steel substrate, working pressure 0.2-1.5 Pa; sputtering titanium oxynitride gradient absorbing film on anti-infrared reflection film, working pressure 0.2-0.8Pa, reaction gas nitrogen, nitrogen and oxygen volume ratio 1:1~1:10, the gas volume is 60-150Sccm; the titanium dioxide anti-reflection film is sputter deposited on the titanium oxynitride gradient absorbing film, the working pressure is 0.2-0.8Pa, and the oxygen volume of the reaction gas is 30-200Sccm.

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Abstract

The invention relates to a trough-type solar medium-temperature and high-temperature collector tube, which comprises a stainless steel substrate and is characterized in that an anti-infrared reflecting film, a titanium oxynitride graded absorbing film and an antireflection film are sequentially arranged on the stainless steel substrate. Since the coating layer of the collector tube provided by the invention has lower low-temperature emissivity, a film system has lower thermal loss and the thermal insulation performance is good; and since the coating layer is made of a high-hardness, wear-resistant and antioxidant material and the resistivity is low, the weather resistance and the medium-temperature and high-temperature service performance of the collector tube provided by the invention are excellent and the collector tube is suitable for temperature of 350-550DEG C.

Description

technical field [0001] The invention belongs to solar heat collectors, and more specifically, the invention relates to a heat collecting tube of a trough solar medium and high temperature 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 temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/48
CPCY02E10/40F24S70/225F24S70/30
Inventor 葛波
Owner SUZHOU JIAYAN ENERGY EQUIP
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