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Solar energy absorption coating for flat plates

A flat panel solar energy and solar energy absorption technology, applied in the field of solar energy absorption coatings, can solve the problems of difficult process control, long production cycle, cumbersome production process, etc., and achieves simple production process, good waterproof and anti-aging performance, and high solar energy absorption efficiency. Effect

Inactive Publication Date: 2014-04-30
GUANGXI JISHUN ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a solar absorbing coating with low raw material cost, simple manufacturing process, good molding manufacturability, various colors, and high energy conversion efficiency, so as to solve the problems of single color and low solar energy conversion efficiency of current solar heat absorbing coatings. The raw materials of paint are expensive, the production cost is high, the production process is cumbersome, the process control is difficult, the production cycle is long and the efficiency is low, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix 8 parts of organic carbon black, 3 parts of titanium dioxide, 1.5 parts of manganese dioxide, 0.5 parts of iron oxide powder, 1 part of chromium oxide powder, 1 part of selenium cadmium sulfide powder and 0.5 part of copper oxide powder to make an absorbent. Add 25 parts of absorbent to 30 parts of ethanol with a concentration of 60%, stir for 15 minutes with a mixer at a speed of 250 rpm, mix well, and then mix 55 parts of the mixed solution with 40 parts of acrylic resin and 5 parts of additives Mixing, using a blender to stir at 500 rpm for 30 minutes, mixing evenly, and finally filtering the obtained solution with silk silk, putting the filtered solution in a container for sealed storage, and the parts of the above raw materials are measured in parts by mass.

[0029] The coating is uniformly coated on the outside of the flat solar collector, and after curing at room temperature, a black solar absorbing coating is obtained. The solar absorption rate is as high as...

Embodiment 2

[0031] Mix 3 parts of titanium dioxide, 2 parts of manganese dioxide, 9 parts of iron oxide powder, 1 part of chromium oxide powder, 1 part of selenium cadmium sulfide powder and 0.5 part of copper oxide powder to make absorbent, and add 30 parts of absorbent to 25 parts of ethanol with a concentration of 70% were stirred for 15 minutes with a stirrer at a speed of 250 rpm, mixed evenly, then 55 parts of the mixed solution was mixed with 40 parts of acrylic resin and 5 parts of auxiliary agents, and the mixture was mixed with a stirrer at 500 Stir for 30 minutes at rpm, mix evenly, and finally filter the obtained solution with silk silk, put the filtered solution in a container for sealed storage, and the parts of the above raw materials are measured in parts by mass.

[0032] The paint is evenly coated on the outside of the flat solar collector, and after curing at room temperature, a brick-red solar absorbing coating is obtained. The solar absorption rate is as high as 0.968 ...

Embodiment 3

[0034] Mix 3 parts of titanium dioxide, 1 part of manganese dioxide, 1 part of iron oxide powder, 8 parts of chromium oxide powder, 1 part of selenium cadmium sulfide powder and 0.5 part of copper oxide powder to make absorbent, and add 30 parts of absorbent to 25 parts of ethanol with a concentration of 65% were stirred for 15 minutes with a stirrer at a speed of 250 rpm, mixed evenly, then 55 parts of the mixed solution was mixed with 40 parts of acrylic resin and 5 parts of additives, and the mixture was mixed with a stirrer at 500 Stir for 30 minutes at rpm, mix evenly, and finally filter the obtained solution with silk silk, put the filtered solution in a container for sealed storage, and the parts of the above raw materials are measured in parts by mass.

[0035] The paint is uniformly coated on the outside of the flat solar collector, and after curing at room temperature, a brick-red solar absorbing coating is obtained. The solar absorption rate is as high as 0.961 and t...

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Abstract

The invention relates to solar energy absorption coating for flat plates. The solar energy absorption coating is formed by acrylic resin and is used for forming a thin film. An absorbent is prepared by using organic carbon black, titanium dioxide, manganese dioxide powder, ferric oxide powder, chromic oxide powder, cadmium sulfide selenide powder and copper oxide powder; ethyl alcohol, acetone or cyclohexanone is used as a solvent; the performances of the coating are improved by adding a plasticizer, an inhibitor, an anti-settling agent, a lubricating agent and a dispersing agent. A preparation technology of the solar energy absorption coating is simple; the solar energy absorption coating has relatively high solar energy absorption efficiency and relatively good waterproof and anti-ageing performances; the solar energy absorption coating with different colors can be selected so as to meet the decoration requirements of different requirements.

Description

technical field [0001] The invention relates to a solar absorbing coating, in particular to a solar absorbing coating which can be used for flat solar water heaters. Background technique [0002] With the current energy, environmental protection and other issues becoming more and more acute, solar energy, as a widely distributed and inexhaustible clean energy, is being paid more and more attention. However, due to the low energy density of sunlight, its direct utilization efficiency is low, and even cannot be effectively utilized. Solar heat-absorbing paint is a functional paint that can absorb solar energy by covering the surface of the collector to form a layer to enrich the solar energy density, convert solar radiation energy into heat energy, and improve the efficiency of light energy into heat energy. Because solar collectors are generally exposed to the outdoors for a long time, and the climate environment is changeable, solar heat absorbing coatings are required to h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/32
Inventor 蒙献芳周子茜陆俊行
Owner GUANGXI JISHUN ENERGY TECH
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