Reflection silver mirror used for solar energy thermal power generation and manufacturing method thereof

A solar thermal power generation, silver mirror technology, applied in chemical instruments and methods, mirrors, sputtering coating, etc., can solve the problems of reflectivity discount, large reflectivity difference between reflecting silver mirrors, time-consuming and labor-intensive, etc. Reflectivity, Reflectance Guaranteed Effect

CN102323632AInactive Publication Date: 2012-01-18CHANGZHOU CHANGJIANG GLASS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-01-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a reflection silver mirror used for solar energy thermal power generation. The reflection silver mirror comprises ultrawhite ultrathin glass and substrate glass of a parabolic shape. A front surface of the ultrawhite ultrathin glass is plated with a highly transparent self-cleaning film layer. A back surface of the ultrawhite ultrathin glass is plated with an Al[2]O[3] bonding layer which is plated with an Ag reflecting layer. The above plated ultrawhite ultrathin glass is integrally fixed on a paraboloid of the substrate glass through the bonding layer. The reflection silver mirror has the advantages of high reflectivity and good weather resisting property.
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Description

technical field

[0001] The invention relates to the technical field of solar thermal power generation, in particular to a reflective silver mirror for solar thermal power generation and a manufacturing method thereof. Background technique

[0002] The reflectors for trough solar thermal power generation are parabolic reflectors. At present, there are mainly glass rear surface mirrors and metal front surface mirrors in the world. Metal front surface mirrors are mostly polished with stainless steel front surface (film) or high-purity aluminum front surface polishing and oxidation process. , poor weather resistance, cannot meet the service life of solar power generation for more than 20-30 years; and the silver-coated glass rear surface mirror is the most common and most promising long-term use mirror.

[0003] At present, the trough reflector that can withstand the environmental test for a long time in the world is the glass rear surface mirror. Most of this silver-coated glas...

Examples

Embodiment Construction

[0022] refer to figure 1 , the reflective silver mirror for solar thermal power generation of the present invention includes ultra-white ultra-thin glass 10 and a parabolic substrate glass 20 . After the ultra-white ultra-thin glass 10 is chemically tempered, the surface finish will not be affected, the mechanical strength is 3-5 times higher than that of physical tempering, and it has very good flexibility. The thickness of the ultra-white ultra-thin glass 10 is 0.85-1.6 mm, preferably 1 mm. Ultra-white ultra-thin glass chemically toughened is a flat glass during magnetron sputtering coating (it is flat before assembling with the substrate glass), unlike curved glass which is uneven, and the target base distance for sputtering is everywhere. Equal, the film formation is uniform, and the quality of the deposited film is guaranteed.

[0023] refer to figure 1 , the front surface of the flat ultra-white ultra-thin glass 10 is coated with a high-transparency self-cleaning film...