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Combined cycle power generation system based on particle heat exchanger and solar power generation system

A combined cycle power generation and power generation system technology, applied in indirect heat exchangers, heat exchanger types, regenerative heat exchangers, etc., can solve problems such as low power generation efficiency

Pending Publication Date: 2022-07-22
浙江高晟光热发电技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, outside the corresponding temperature range, the three cycle power generation systems all have the problem of low power generation efficiency

Method used

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  • Combined cycle power generation system based on particle heat exchanger and solar power generation system

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Effect test

Embodiment 1

[0030] The embodiment of the present invention utilizes the temperature range of the higher power generation efficiency of the air cycle power generation system and the supercritical carbon dioxide cycle power generation system, and couples the two power generation systems with the particle heat exchanger to provide a combined cycle based on the particle heat exchanger. power generation system, see figure 1 , the system includes a particle heat exchanger 1, an air circulation power generation system, and a supercritical carbon dioxide power generation system;

[0031] The air cycle power generation system includes: an air turbine 2, a heat exchanger 3, a first regenerator 4, a first cooler 5, and an air compressor 6;

[0032] The air working medium flowing out of the air outlet of the particle heat exchanger 31 passes through the air turbine 2, the high temperature side of the heat exchanger 3, the high temperature side of the first regenerator 4, the first cooler 5, the air c...

Embodiment 2

[0057] A solar power generation system, including the combined cycle power generation system based on the particle heat exchanger of Example 1, the sunlight is concentrated by the heliostat field around the heat absorption tower, and the solar energy is absorbed by the heat absorber on the heat absorption tower. The solar energy is converted into the heat energy of the heat storage particles, and the particle heat exchanger 1 transfers the heat energy of the heat storage particles to the air circulation power generation system, and further transfers it to the supercritical carbon dioxide power generation system to realize the stepped utilization of temperature and improve the power generation efficiency.

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Abstract

The invention discloses a combined cycle power generation system based on a particle heat exchanger and a solar power generation system. The combined cycle power generation system comprises the particle heat exchanger, an air cycle power generation system and a supercritical carbon dioxide power generation system. The air circulation power generation system comprises an air turbine, a heat exchanger, a first heat regenerator, a first cooler and an air compressor. An air working medium flowing out of an air outlet of the particle heat exchanger passes through the air turbine, the high-temperature side of the heat exchanger, the high-temperature side of the first heat regenerator, the first cooler, the air compressor and the low-temperature side of the first heat regenerator, and then returns to the particle heat exchanger through an air inlet of the particle heat exchanger; the supercritical carbon dioxide power generation system communicates with the air circulation power generation system through the low-temperature side of the heat exchanger. The power generation efficiency of the air circulation power generation system and the power generation efficiency of the supercritical carbon dioxide circulation power generation system are in respective high advantage temperature intervals, energy stored by heat storage particles is fully converted into electric energy, and the energy utilization rate is increased.

Description

technical field [0001] The invention belongs to the technical field of solar thermal power generation, and in particular relates to a combined cycle power generation system based on a particle heat exchanger and a solar power generation system. Background technique [0002] In the solar thermal power generation system, the solid particle heat absorption and storage technology is one of the mainstream technologies in the third-generation tower CSP research. (2) The cost of particles is low; (3) The endothermic temperature of the particles is high, up to 1000 °C; (4) The storage and transportation of the particles does not require the use of expensive metal materials, and the equipment cost is low. [0003] The current power generation systems mainly include three cycle power generation systems: air Brayton cycle, sCO2 cycle and Rankine cycle. Among the above three power generation systems, the air Brayton cycle has the highest applicable temperature range, and has the highest...

Claims

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Application Information

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IPC IPC(8): F03G6/06F01K23/10F01K25/00F01K25/10F28D19/02
CPCF03G6/065F01K23/10F01K25/00F01K25/103F28D19/02
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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