An external particle heat absorber and solar power generation system

An external heat absorber technology, applied in solar thermal power generation, solar heating systems, solar thermal energy, etc., can solve the problems of low heat absorption efficiency of particle heat absorbers, improve land utilization, reduce electricity cost, The effect of heat absorption temperature uniformity

Active Publication Date: 2021-07-09
浙江高晟光热发电技术研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an external particle heat absorber and solar power generation system to solve the problem of low heat absorption efficiency of the existing particle heat absorber

Method used

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  • An external particle heat absorber and solar power generation system
  • An external particle heat absorber and solar power generation system
  • An external particle heat absorber and solar power generation system

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Embodiment 1

[0046] see Figure 1 to Figure 6, In one embodiment, an external particle heat absorber includes a particle heat exchanger 3 and a heat absorption tube group 8 for receiving solar energy. The particle heat exchanger 3 is provided with at least one particle channel 6 and at least one working medium channel 4, and the working medium channel 4 is in heat transfer contact with the particle channel 6, so that the particles in each particle channel 6 can be connected to the working medium channel The phase change working medium in 4 performs heat exchange. The heat-absorbing tube group 8 is filled with a phase-change working fluid whose evaporation temperature is higher than the heat-absorbing temperature of the particles circulating in the particle channel 6 . The output end of the heat-absorbing tube group 8 is connected with the input end of the working medium channel 4, and the input end of the heat-absorbing tube group 8 is connected with the output end of the working medium c...

Embodiment 2

[0072] A solar power generation system, comprising the external particle heat absorber in the first embodiment above. By setting the phase change working medium as the intermediate heat exchange medium, the heat is transferred to the particles after evaporation and the particles are raised to the required temperature, which has higher efficiency. At the same time, the external heat sink structure is adopted, which is conducive to the expansion of the installed capacity of the power station, thereby reducing the investment cost per unit scale. The external heat sink can be arranged in a circular mirror field to increase land utilization.

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Abstract

The invention discloses an external particle heat absorber and a solar power generation system. A particle heat exchanger is provided with a particle channel and a working medium channel inside. In the circulation pipeline, the working fluid channel is in heat transfer contact with the particle channel. After the phase change working fluid in the heat-absorbing tube group absorbs heat and evaporates into a gaseous phase change working medium, it enters the working fluid channel and the cold particles in the particle channel conduct heat transfer. The phase-change working fluid that is heat-exchanged and condensed into liquid flows back to the heat-absorbing tube group. The heated hot particles can be output to the next external device through the output end of the particle channel. By setting the liquid-phase phase change working medium as the intermediate heat exchange medium, the heat is transferred to the particles after evaporation and the particles rise to the required temperature, which has high efficiency and solves the problem of low heat absorption efficiency of the existing particle heat absorbers. question. At the same time, particle technology is cheap and has a higher heat absorption temperature. Under the same heat absorption efficiency, it can greatly reduce the cost per kilowatt-hour of a solar thermal power station.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and in particular relates to an external particle heat absorber and a solar power generation system. Background technique [0002] Solar energy is a green, sustainable and clean energy, so it may become an ideal main energy source in the future. Solar thermal power generation is equipped with large-scale and cheap energy storage technology, so the power output is smooth, stable and dispatchable, and has broad application prospects. [0003] Solid particle heat absorption and storage technology is a new type of solar heat absorption and storage technology, and it is one of the mainstream technologies in the research of third-generation tower-type photothermal power generation. Its main advantages are as follows: solid particles can simultaneously meet the requirements of heat absorption, heat transfer and heat storage. Demand; the cost of particles is low; the heat absorpti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S10/30F24S10/95F24S70/60F24S80/20F03G6/06
CPCF03G6/06F24S10/30F24S10/95F24S70/60F24S80/20F24S2070/62Y02E10/44Y02E10/46
Inventor 俞明锋章晓敏宓霄凌
Owner 浙江高晟光热发电技术研究院有限公司
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