Medium-high-temperature through type metal solar collector tube

A medium-high temperature, straight-through technology, used in the field of solar thermal utilization, can solve the problems of high temperature resistance and oxidation resistance of material corrosion and heat absorption coating, and achieve the effect of high temperature resistance, high absorption rate, and not easy to mechanical damage.

Active Publication Date: 2011-10-05
HUANENG POWER INTERNATIONAL +2
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, glass-metal vacuum solar heat collector tubes are generally used for solar thermal power generation, while Fresnel solar thermal power generation systems directly use metal heat collector tubes, which have the problem of material corrosion at medium and high temperatures of 200-500 °C , high temperature resistance and oxidation resistance of heat-absorbing coatings

Method used

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  • Medium-high-temperature through type metal solar collector tube
  • Medium-high-temperature through type metal solar collector tube
  • Medium-high-temperature through type metal solar collector tube

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Embodiment Construction

[0016] The present invention will be described in more detail below in conjunction with the accompanying drawings.

[0017] like figure 1 As shown, the medium and high temperature straight-through solar metal heat collector tube includes a metal base tube 1, and the outer surface of the metal base tube 1 is covered with an anti-corrosion coating 2 and an absorbing coating 3 sequentially from the inside to the outside, wherein the anti-corrosion coating Layer 2 is a high-phosphorus electroless nickel coating, and the thickness of the high-phosphorus electroless nickel coating is 10-20 μm, such as figure 2 As shown, the absorption coating 3 is sequentially composed of a metal infrared reflective sub-coat 31, a high-temperature endothermic sub-coat 32 in a cermet, and an anti-reflection sub-coat 33 from the inside to the outside, and the metal material of the metal infrared reflective sub-coat 31 Using Nb, Cu, Al, Ti, Mg, Rh, Ag or Au, the thickness of the metal infrared reflec...

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Abstract

The invention discloses a medium-high-temperature through type metal solar collector tube which comprises a metal parent tube, the outer surface of the metal parent tube is covered with an anti-corrosion coating and an absorption coating in sequence from inside to outside, wherein the anti-corrosion coating is a high phosphorous chemical nickel-plated coating, the thickness of the high phosphorous chemical nickel-plated coating is 10 to 20 Mum, and the absorption coating comprises a metal infrared reflecting sub-coating, a metal ceramic medium-high-temperature heat absorbing sub-coating and areflection reducing sub-coating in sequence from inside to outside. The medium-high-temperature through type metal solar collector tube disclosed by the invention solves the problems of corrosion of materials at a medium-high temperature of 200 to 500 DEG C, and heat resistance and oxidation resistance of the heat absorbing coating, realizes corrosion, heat and high pressure resistance, and has low cost, a simple preparation process and high practicality.

Description

technical field [0001] The invention belongs to the technical field of solar light and heat utilization, and in particular relates to a medium-high temperature through-type solar metal heat collecting tube, in particular to a medium-high temperature solar metal heat collecting tube suitable for use in a Fresnel solar thermal power generation system. Background technique [0002] With the rapid growth of the national economy, the demand for energy is increasingly strong, and the problems of energy shortage and environmental pollution caused by fossil energy are becoming increasingly acute. Renewable energy resources have great potential and can be used sustainably. They have played an important role in meeting energy demand, improving energy structure, reducing environmental pollution, and promoting economic development, and have attracted widespread attention from the international community. Renewable energy mainly refers to solar energy, wind energy, biomass energy and tid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/50F24J2/46
CPCY02E10/40
Inventor 许世森刘明义郑建涛徐海卫裴杰徐越王保民
Owner HUANENG POWER INTERNATIONAL
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