Solar supercritical carbon dioxide Brayton circulatory system

A technology of Brayton cycle and carbon dioxide, applied in solar thermal power generation, mechanical power generated by solar energy, steam engine device, etc., can solve the problems of high cost and low thermal efficiency, avoid heat exchange loss, improve heat exchange efficiency, and simplify the device Effect

Active Publication Date: 2019-08-13
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a solar energy supercritical energy storage and heat exchange system that can improve system efficiency and reduce costs in order to solve the problems of low thermal efficiency and high cost of the existing solar energy supercritical carbon dioxide Brayton cycle system. Critical carbon dioxide Brayton cycle system

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  • Solar supercritical carbon dioxide Brayton circulatory system
  • Solar supercritical carbon dioxide Brayton circulatory system
  • Solar supercritical carbon dioxide Brayton circulatory system

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Embodiment Construction

[0039] The present invention will be further described below with reference to the accompanying drawings.

[0040] Such as figure 1 As shown, the first embodiment of the present invention relates to a MgCO-based 3 / MgO energy storage solar supercritical carbon dioxide Brayton cycle system, supercritical carbon dioxide circulates in the system, the system includes:

[0041] The solar heat absorber 1, the turbine unit 3 and the Brayton cycle unit, the solar heat absorber 1 and the Brayton cycle unit are respectively connected to the turbine unit 3 through pipelines, and are used to store metal carbonate and corresponding metal oxide storage tanks 13 is connected in parallel with the circulating supercritical carbon dioxide pipeline between the solar heat absorber 1 and the turbine unit 3, and the gas storage tank 8 for storing supercritical carbon dioxide is arranged in the Brayton cycle unit;

[0042] The Brayton cycle unit in this embodiment is a recompression Brayton cycle ...

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Abstract

The invention discloses a solar supercritical carbon dioxide Brayton circulatory system. The circulatory system includes a solar heat absorber, a turbine unit and a Brayton cycle unit; the solar heatabsorber and the Brayton cycle unit are respectively connected to the turbine unit through pipelines; the circulatory system also includes a storage tank which is in parallel connection or series connection with the pipeline between the solar heat absorber and the turbine unit and used for storing metal carbonates and metal oxides; and in addition, the Brayton cycle unit is provided with a gas storage tank which is used for storing supercritical carbon dioxide. The provided circulatory system couples direct production of supercritical carbon dioxide based on thermochemistry and supercritical carbon dioxide Brayton cycle, so that efficient energy storage and heat exchange can be realized, device efficiency can be enhanced, and costs can be reduced.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a solar supercritical carbon dioxide Brayton cycle system. Background technique [0002] The annual solar radiation received by my country's land surface is equivalent to 4.9 trillion tons of standard coal. The western Qinghai-Tibet Plateau, the back of Gansu, northern Ningxia, and southern Xinjiang are areas with the richest solar energy resources, with a development potential of more than 85 trillion kWh / year. Accounting for about 75% of the country's total, my country's solar energy has huge potential for development. Solar power generation technologies are mainly divided into two categories: photovoltaic power generation and photothermal power generation. Photovoltaic power generation has many disadvantages such as discontinuous day and night, high energy storage costs, severe light abandonment, and short service life. And solar thermal power generation can use cheap energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G6/06F01K7/32F01K13/00
CPCF01K7/32F01K13/00F03G6/064Y02E10/46
Inventor 肖刚庞华倪明江骆仲泱岑可法程乐鸣
Owner ZHEJIANG UNIV
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