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Integrated solar receiver-multistage heat accumulation system

A heat storage system and receiver technology, applied in the field of concentrated solar power (CSP), can solve the problem of limited heat exchange efficiency of the system

Active Publication Date: 2020-10-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single heat storage medium limits the heat transfer efficiency of the system. Therefore, it is of great significance to study an integrated solar receiver-multi-stage heat storage system using a multi-stage heat storage method to improve the heat transfer efficiency of the system.

Method used

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  • Integrated solar receiver-multistage heat accumulation system

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with accompanying drawing.

[0013] refer to figure 1 , the integrated solar receiver-multistage heat storage system of the present invention includes a compound parabolic concentrator (CPC) 1, a multistage heat storage packed bed 9 and a cavity receiver 11, and the compound parabolic concentrator ( The CPC) 1 is positioned in the top conical aperture of the cavity receiver 11 and has a corresponding cover covering the aperture. The multi-stage heat storage packed bed 9 is directly connected to the cavity receiver 11, and the insulating layers of the two are the cavity receiver shell 2 and the multi-stage heat storage packed bed shell 5 respectively.

[0014] Four air outlets 11 (installed with valves) are evenly distributed at a certain height on the side of the chamber receiver 11, and four circulating air inlet and outlet pipes 3 are evenly distributed, among which the chamber receiver 11 and the m...

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Abstract

The invention discloses an integrated solar receiver-multistage heat accumulation system. The system is applied to a downward irradiation type CSP system, a cavity type receiver and a multistage heataccumulation packed bed are integrated, independent heat accumulators and receiver modules are avoided, usage of connection pipelines is reduced, the overall design of the system is optimized, and theinitial investment cost of the system is reduced. The heat exchange effect in the packed bed is enhanced through a circulation air pipeline both in the heat filling process and the heat releasing process, and the heat exchange efficiency of the system is improved through a method of multistage heat accumulation in the packed bed. Hot air output by the system can be used by users or be merged intoother systems to achieve an auxiliary effect, and various advantages of economy, safety and stability are achieved.

Description

technical field [0001] The invention relates to concentrated solar power (CSP) technology, in particular to an integrated solar receiver-multi-stage heat storage system applied to a down-beam CSP system. Background technique [0002] Concentrated solar power (CSP) systems with thermal storage units can provide dispatchable energy and are the main direction of future CSP system technology development. At present, relevant researchers have carried out a lot of research work on how to operate such systems with high efficiency and low cost, but the research focuses on the structure and heat storage medium of the heat storage system. few. [0003] In the earliest research on the integrated solar receiver-heat storage system, molten salt was used as the heat storage medium, and the concentrated sunlight irradiated the molten salt, and the molten salt directly absorbed and stored heat, thus simplifying the overall design of the system and reducing the system cost. The complexity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S60/00F24S23/71
CPCF24S23/71F24S60/00Y02E10/40
Inventor 王军李秀秀杨嵩
Owner SOUTHEAST UNIV