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Continuous type heat storage system based on photo-thermal moving bed

A technology of heat storage system and moving bed, which is applied in the field of continuous heat storage system, can solve the problems of complex heat storage system, poor mass transfer and heat transfer performance, etc., and achieve the effect of solving agglomeration and continuous operation reliability

Inactive Publication Date: 2020-02-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a continuous heat storage system based on photothermal moving bed for the problems of material agglomeration, poor mass and heat transfer performance, and complex heat storage system in traditional hydrated salt adsorption heat storage reactors.

Method used

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  • Continuous type heat storage system based on photo-thermal moving bed
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specific Embodiment approach 1

[0020] Specific implementation manner one: such as Figure 1-Figure 4 As shown, this embodiment records a continuous thermal storage system based on a photothermal moving bed, including an automatic feeding device, a photothermal reactor, a transmission system, a material collection device 2, a support frame 1, and a thermal storage material, The discharging end of the automatic feeding device is connected to the feeding end of the inner tube 3 of the photothermal reactor. The photothermal reactor is supported by the support frame 1 and arranged obliquely. The discharging end of the photothermal reactor is low. At the feed end, the material collection device 2 is arranged below the discharge end of the photothermal reactor (used to collect the heat storage material that is driven by the chain 4 to the discharge end of the photothermal reactor and then falls freely), and the transmission system The chain 4 in the middle penetrates into the automatic feeding device and the photot...

specific Embodiment approach 2

[0021] Specific implementation manner two: such as figure 1 , image 3 As shown, this embodiment is a further description of specific embodiment 1. The automatic feeding device includes a front duct 5, a silo 6 and a rear duct 7; the bottoms of the front and rear side walls of the silo 6 are all provided with Through holes, the through holes on the front side of the silo 6 communicate with the rear end of the front duct 5, the through holes on the rear side wall of the silo 6 communicate with the front end of the rear duct 7, and the front side of the rear duct 7 is provided with multiple exhaust Hole 8, the silo 6 is arranged obliquely, the inclination angle of the silo 6 is the same as that of the photothermal reactor, and the inclination angle between the front and rear side walls of the silo 6 and the horizontal plane is an acute angle (for the heat storage material to slide down to the front and rear conduit openings) ; The heat storage material is added by the silo 6.

[00...

specific Embodiment approach 3

[0024] Specific implementation manner three: such as figure 1 , Figure 4 As shown, this embodiment is a further description of the second embodiment. The photothermal reactor (which is the core component of the heat storage process) is a double-layer tube structure in which an inner tube 3 and an outer tube 9 are nested together. , The outer tube 9 is a glass tube (with high light transmittance), and the outer wall of the inner tube 3 is provided with a selective absorption coating (with high efficiency light absorption capability, and efficiently converts the received light energy into heat energy, while It has extremely low emissivity to reduce radiant heat loss), a vacuum closed cavity is formed between the inner tube 3 and the outer tube 9 (to prevent the wall of the inner tube 3 from facing the environment to dissipate heat), and both ends of the inner tube 3 extend out of the outer tube 9 The outside; the chain 4 carries the heat storage material into the inner tube 3 (th...

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Abstract

The invention relates to a continuous type heat storage system based on a photo-thermal moving bed and belongs to the field of solar heat storage. The discharging end of an automatic feeding device isconnected with the feeding end of an inner pipe of a photo-thermal reactor, the photo-thermal reactor is supported by a supporting frame and is arranged in an inclined mode, the discharging end of the photo-thermal reactor is lower than the feeding end of the photo-thermal reactor, a material collecting device is arranged below the discharging end of the photo-thermal reactor, a chain in a transmission system penetrates into the automatic feeding device and the photo-thermal reactor, and heat storage materials are put into the automatic feeding device and driven by the chain in the transmission system to enter the photo-thermal reactor and then fall into the material collecting device through a discharging port of the photo-thermal reactor. According to the continuous type heat storage system, complex heat transmission parts do not need to be arranged in the photo-thermal and heat storage process, sunlight is directly absorbed to carry out photo-thermal conversion, and the heat is stored in the adsorbing type heat storage materials. Moisture desorption and heat storage are achieved by erecting a moving bed system, the problems of clustering and wall sticking of high-water-contentadsorbents are effectively solved through transmission of the chain, and the system is capable of running continuously and good in reliability.

Description

Technical field [0001] The invention belongs to the field of solar thermal storage, and particularly relates to a continuous thermal storage system based on a photothermal moving bed. Background technique [0002] my country's solar energy resources are very rich, with annual radiation exceeding 5000MJ / m 2 The area accounts for more than 96% of the land area. The bottleneck of the use of renewable energy such as solar energy is the intermittent and instability of energy sources, which leads to a mismatch between the heating side and the demand side, and heat storage technology is an effective way to solve this problem. Since chemical heat storage has the advantages of high energy density, no insulation protection, long storage period, etc., it is the best choice for solar heat storage. [0003] The hydrated salt adsorption heat storage has the characteristics of high heat storage density, reaction temperature range (20~150℃) matched with building heating, and friendly to the ecolo...

Claims

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Application Information

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IPC IPC(8): F24S60/00F24S70/225
CPCF24S60/00F24S70/225Y02E10/40
Inventor 魏思雨苏彦麟李俊峰韩瑞周伟高继慧秦裕琨
Owner HARBIN INST OF TECH
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