Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of solar selective absorbing coating and preparation method thereof

An absorbing coating and selective technology, which is applied in the field of solar thermal utilization and thermal power generation, can solve the problems of atomic diffusion, limit the application of high-temperature thermal power generation, coating peeling, etc., and achieve good temperature stability and excellent photothermal conversion efficiency Effect

Active Publication Date: 2018-12-04
NANJING TECH UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it will face problems such as atomic diffusion and coating peeling at high temperatures, and the preparation conditions of magnetron sputtering are relatively strict, and the thickness of each layer needs to be controlled more accurately, which limits its application in high-temperature thermal power generation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of solar selective absorbing coating and preparation method thereof
  • A kind of solar selective absorbing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like figure 1 As shown, a solar selective absorbing coating, the coating is sequentially arranged as a high infrared reflective layer 1, a multi-scale cermet absorbing layer 2, and a photoluminescent layer 3 from the base to the surface; the high infrared reflective layer 1 For polishing stainless steel sheets, the metal phase of the multi-scale cermet absorption layer 2 is composed of one or more metal particles with a particle size ranging from nanometers to micrometers, and the metals include but are not limited to Mo, Ni, W, Fe, Al, the ceramic phase consists of one or more ceramic composites, ceramics including but not limited to SiO 2 、Al 2 o 3 , TiC, TiN. The photoluminescent layer 3 is located on the top layer of the coating, and is made of rare earth-doped potassium sodium niobate-based ceramics ((K,Na)NbO 3 ) material comp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a solar selective absorbing coating and a preparation method thereof. The solar selective absorbing coating is characterized in that a high infrared reflection layer, a multi-scale metal ceramic absorbing layer and a photoluminescence layer are arranged in sequence from the substrate to the surface of the coating; the high infrared reflection layer serves as the substrate; the metal phase of the multi-scale metal ceramic absorbing layer comprises one or more metal particles of which the particle size is of nanometer-micrometer grade; the ceramic phase is formed by compositing of one or more kinds of ceramic; the photoluminescence layer is positioned on the uppermost layer of the coating and made of a rare earth doping potassium-sodium niobate based ceramic ((K,Na)NbO3 material. The invention further discloses the preparation method of the solar selective absorbing coating. The solar selective absorbing coating has an excellent optical performance and a better heating stability.

Description

technical field [0001] The invention relates to a solar energy selective absorption coating and a preparation method thereof, which are used in solar heat collectors and belong to the technical field of solar thermal utilization and thermal power generation. Background technique [0002] Solar selective absorbing coating is an important energy material, and the light-to-heat conversion performance of the coating directly determines the efficiency of solar heat utilization. The currently commercialized solar selective absorption coating is a double-layer gradient absorption cermet selective coating prepared by magnetron sputtering. This coating uses the principles of metal-dielectric absorption and optical interference absorption to improve the absorption efficiency of the coating. Good absorbent properties. However, it will face problems such as atomic diffusion and coating peeling at high temperatures, and the preparation conditions of magnetron sputtering are relatively s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00F24S70/10
CPCC23C28/32C23C28/345F24S70/25F24S70/225Y02E10/40
Inventor 庞旭明林士舜周剑秋
Owner NANJING TECH UNIV