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Solar heat collection and storage medium and preparing method thereof

A technology of solar heat collection and heat storage medium, which is applied in the direction of solar heat storage, solar heat collector, solar thermal energy, etc. It can solve the problems of wall agglomeration, easy leakage, corrosion of sealing ring by molten salt liquid, etc., and achieves Effects of improving heat storage performance, eliminating high pressure, and eliminating heat loss

Pending Publication Date: 2017-12-12
RAYSPOWER ENERGY GRP CO LTD
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Problems solved by technology

[0004] In order to solve the technical problems that agglomeration is easily generated on the vessel wall due to the existence of solid-liquid phase transition; the molten salt liquid has a strong corrosion effect on the sealing ring and is prone to leakage; the working temperature needs to be strictly controlled and cannot be too high or too low. A kind of solar heat collection and heat storage medium and its preparation method are proposed

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  • Solar heat collection and storage medium and preparing method thereof

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preparation example Construction

[0033] The invention provides a method for preparing a multilayer solar energy heat collection and heat storage medium, characterized in that: the method includes the following steps:

[0034] Step 1: Select spherical powder material as raw material;

[0035] Step 2: Treat the powder raw material by PVD, CVD, ion implantation, impregnation, coating and other methods to optimize its heat storage performance;

[0036] Step 3: Deposit a light-to-heat conversion layer on the surface of the powder material by PVD, CVD, dipping, coating and other methods;

[0037] Step 4: further depositing a light-transmitting and heat-insulating layer by using methods such as PVD, CVD, dipping, and coating.

[0038] According to the above method for preparing a solar heat collection and storage medium, the spherical powder raw material may be solid powder or hollow powder.

[0039] According to the above-mentioned preparation method of a solar energy heat collection and heat storage medium, the ...

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Abstract

The invention discloses a solar heat collection and storage medium which is of a powder material and solid phase-change-free multilayered structure. The outermost layer of the solar heat collection and storage medium is a light-transmitting heat-insulation layer, the middle layer is a photothermal conversion layer, and the center is a heat collection and storage body. The invention further discloses a preparing method of the solar heat collection and storage medium. As the light-transmitting heat-insulation layer exists, heat losses caused by heat radiation are eliminated, and the heat storage performance is greatly improved; the solid characteristic is macroscopically kept, gas-liquid and solid-liquid phase changes do not exist, the problems of high pressure, caking, corrosion and the like caused by phase changing are eliminated, and the requirements of systematic design and equipment performance are greatly simplified; and heat storage and application of the medium are achieved within the wider temperature scope, the solar heat storage application convenience is improved, and the process control sensibility is reduced.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to a solar heat collection and heat storage medium and a preparation method thereof. Background technique [0002] Solar thermal utilization is an important aspect of solar energy application. In medium and high temperature solar thermal utilization, tower solar thermal utilization technology is the most mature, effective and the only technology that has been promoted in large-scale commercialization. [0003] In the earliest medium and high temperature solar technology, water was used as the heat storage medium. However, because of gasification and high temperature, the water medium has a series of problems such as corrosion and pressure resistance caused by high temperature and high pressure; in the current tower solar technology, the main use The molten salt of 300-400 degrees is used as the heat storage medium, but it also has the following disadvantages: 1. Due to the soli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/34C09K5/14
CPCF24S60/00C09K5/14Y02E10/40
Inventor 薛晨光杨武保陆钧
Owner RAYSPOWER ENERGY GRP CO LTD
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