Cavity type heat absorber and heat absorbing and storing system

A heat absorber and cavity technology, which is applied in the field of cavity heat absorbers and heat absorption and storage systems, can solve problems such as low heat absorption efficiency and achieve the effect of improving power generation efficiency

Pending Publication Date: 2021-12-07
浙江高晟光热发电技术研究院有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a cavity heat absorber and a heat absorption and storage system to solve the problem of low heat absorption efficiency of the existing cavity heat absorber

Method used

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  • Cavity type heat absorber and heat absorbing and storing system
  • Cavity type heat absorber and heat absorbing and storing system
  • Cavity type heat absorber and heat absorbing and storing system

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Embodiment 2

[0053] see Figure 7 , this embodiment provides a heat absorption and storage system, including the cavity heat absorber 1 in the first embodiment above, which can realize the coupling of the particle heat absorber and the molten salt heat absorber.

[0054] Specifically, it can include particle heat absorption and storage systems and molten salt heat absorption and storage systems. Among them, the particle heat storage system can specifically include a particle heat tank 2, a particle / SCO 2 Heat exchanger 3, particle cold tank 4 and particle elevating system 5, the input end of particle heat tank 2 is connected with the output end of hot particle collecting hopper 102 of cavity heat absorber 1, and particle elevating system 5 can transfer cold particles The particles in the tank are lifted to the cold particle inlet 103 at the top of the cavity heat absorber 1, thereby realizing circulation.

[0055] The molten salt heat absorption and storage system may specifically includ...

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Abstract

The invention discloses a cavity type heat absorber and a heat absorbing and storing system. A cavity type heat absorbing opening is formed in the front wall of a cavity type heat absorber body; a heat absorbing pipe set is arranged on the outer surface of the front wall; the heat absorbing pipe set is located on at least one side of the cavity type heat absorbing opening; solar energy of a mirror field is collected to the cavity type heat absorbing opening, the energy flux density in the cavity type heat absorbing opening is high, the solar energy enters the cavity type heat absorber through the cavity type heat absorbing opening to heat particles, and therefore the function of a particle heat absorber is achieved. However, the energy flux density around the cavity type heat absorbing opening is relatively low, but the requirement for the energy flux density of a heat absorption and storage medium with low heat absorption temperature can still be met, and therefore the heat of the part can be absorbed through the heat absorbing pipe set. Heat absorption and storage media with different heat absorption temperatures are adopted, the media with high heat absorption temperature are matched with SCO2 cycle power generation, and the media with low heat absorption temperature are matched with steam Rankine cycle power generation. The two circulation systems are both located in a temperature interval with high efficiency, and the problem that an existing cavity type heat absorber is low in heat absorption efficiency is solved.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and in particular relates to a cavity-type heat absorber and a heat absorption and storage system. Background technique [0002] With the goal of "carbon peaking and carbon neutrality", solar thermal power generation technology has received widespread attention, but the cost per kilowatt-hour of solar thermal power generation technology limits its application and development. Improving the power generation efficiency of power stations is one of the important measures to reduce power generation costs. Supercritical carbon dioxide (SCO 2 ) Brayton cycle power generation system has high power generation efficiency, and has received extensive attention from scholars. Related research results show that for heat source temperatures below 550 °C, the efficiency of the steam Rankine cycle is higher than that of the SCO 2 cycle; and when the temperature range of the heat source i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S60/00F24S60/30F24S70/60F24S23/00F22B1/02
CPCF24S60/00F24S60/30F24S70/60F24S23/00F22B1/028F24S2070/62Y02E10/44
Inventor 俞明锋章晓敏宓霄凌王伊娜其他发明人请求不公开姓名
Owner 浙江高晟光热发电技术研究院有限公司
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