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Disc type power generation device based on V-shaped heat absorption wall cavity type solar absorber

A technology for solar energy absorption and power generation devices, applied in solar thermal power generation, components of solar collectors, solar collectors, etc., can solve problems such as low thermoelectric conversion efficiency, power generation costs easily affected by molten salt prices, etc. Effects of improving Brayton cycle efficiency, reducing optical loss, and improving heat transfer coefficient

Pending Publication Date: 2019-03-29
SOUTH CHINA UNIV OF TECH +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current cavity absorber, which is the core device of the dish solar thermal power generation system, often cannot simultaneously reduce heat loss, improve light-to-heat conversion efficiency, and effectively store heat.
Moreover, the current solar power generation system generally uses the Rankine cycle, which uses the focused sunlight to heat the heat transfer fluid and drive the steam turbine to generate electricity. Not only is it not suitable for water-scarce areas, but also the thermoelectric conversion efficiency is low.
In addition, the construction and production of thermal power stations often have a large demand for high-temperature molten salt for heat storage, and the cost of power generation is easily affected by the price of molten salt

Method used

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  • Disc type power generation device based on V-shaped heat absorption wall cavity type solar absorber
  • Disc type power generation device based on V-shaped heat absorption wall cavity type solar absorber
  • Disc type power generation device based on V-shaped heat absorption wall cavity type solar absorber

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] A dish-type power generation device based on a V-shaped heat-absorbing wall-cavity solar absorber, including a light-to-heat conversion unit, a supercritical CO 2 Brayton cycle power generation system; light-to-heat conversion unit converts light energy into heat energy, supercritical CO 2 Brayton cycle power generation system for power generation; light-to-heat conversion unit and supercritical CO 2 Brayton cycle power generation system connection.

[0027] Multiple light-to-heat conversion units can be connected in series or in parallel, and can also be connected in series and then in parallel to give supercritical CO 2 The Brayton cycle power generation system provides more thermal energy. In this embodiment, four light-to-heat conversion units are included. The four light-to-heat conversion units are first connected in series in pairs to form tw...

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Abstract

The invention discloses a disc type power generation device based on a V-shaped heat absorption wall cavity type solar absorber. The device comprises a light-heat conversion unit and a supercritical CO2 brayton cycle power generation system; the light-heat conversion unit comprises a V-shaped heat absorption wall cavity type solar absorber, collecting lenses and CO2 pipeline, wherein a plurality of collecting lenses are uniformly arranged on the periphery of the V-shaped heat absorption wall cavity type solar energy absorber, and the V-shaped heat absorption wall cavity type solar energy absorber is connected to the supercritical CO2 brayton cycle power generation system through the CO2 pipeline; the V-shaped heat absorption wall cavity type solar energy absorber is internally provided with a V-shaped heat absorption cavity assembly, wherein the V-shaped heat absorption cavity assembly comprises a plurality of heat exchange layers, an included angle alpha is formed between every two adjacent heat exchange layers, V-shaped closed spaces are arranged as heat preservation chambers or heat absorption cavities, the heat preservation chambers and the heat absorption chambers are alternately arranged, and an optical incident window directly faces the heat absorption chamber; and a heat exchange pipe is embedded into the heat exchange layers. The device has the advantages of being highin thermoelectric conversion efficiency, high in power generation efficiency, low in cost and the like. The invention belongs to the technical field of solar disc type power generation.

Description

technical field [0001] The invention belongs to the technical field of solar dish power generation, and in particular relates to a dish power generation device based on a V-shaped heat-absorbing wall-cavity solar absorber. Background technique [0002] Solar energy is a kind of clean energy, and realizing efficient utilization of solar energy has always been the dream of mankind. The current solar energy utilization methods mainly include photovoltaic power generation, photothermal power generation and thermochemical application of solar energy. Constrained by the development of solar cell materials, it is difficult to increase the efficiency of photovoltaic power generation in a short period of time. Therefore, it is of great significance to carry out research on solar thermal utilization. According to the form of solar concentration, solar thermal power generation can be mainly divided into three types: trough type, tower type and dish type. Judging from the current com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S20/20F24S50/20F24S60/10F24S70/12F03G6/06F01K25/10F01K7/32
CPCF01K7/32F01K25/103F03G6/06Y02E10/46
Inventor 龙新峰张子英楼波尤坚郑国张明勇
Owner SOUTH CHINA UNIV OF TECH
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