Heliostat mirror field used for tower solar thermal power plant

A tower-type solar energy and heliostat technology, which is applied in the field of heliostat mirror fields, can solve the problems of complex mirror fields, inappropriateness, inconvenient construction and maintenance, etc., to ensure safe operation, reduce total costs, and improve land utilization. Effect

Active Publication Date: 2017-03-22
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Chinese patent CN102753906B discloses a bionic heliostat arrangement method, which is to arrange the heliostats according to the Fermat spiral rule, which reduces the shadow occlusion loss between the heliostats to a certain extent and improves the efficiency of

Method used

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  • Heliostat mirror field used for tower solar thermal power plant
  • Heliostat mirror field used for tower solar thermal power plant
  • Heliostat mirror field used for tower solar thermal power plant

Examples

Experimental program
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Embodiment 1

[0058] See Figure 10 , the heliostat mirror field for a tower solar thermal power plant provided by the embodiment of the present invention includes a near-tower area 501 that is closer to the heat-absorbing tower 401 and a far-tower area 602 that is farther from the heat-absorbing tower, wherein, The near tower area 501 has a square shape, and the far tower area 602 has a circular shape. Specifically, when arranging the mirror field, at least one near tower partition can be set in the near tower area 501, and at least one far tower can be set in the far tower area 602. Partition, the arrangement of heliostats in each near-tower partition is selected from any one of linear fixed mirror row spacing staggered arrangement, linear fixed mirror row spacing non-staggered arrangement, and ring variable mirror row spacing non-staggered arrangement , the arrangement of the heliostats in each far tower partition is selected from any one of the staggered row spacing of linear variable m...

Embodiment 2

[0070] Such as Figure 11 As shown, when the near-tower area 503 is circular and the far-tower area 502 is square, in order to maximize the reflection efficiency of the heliostat mirror field, it is necessary to adjust the circular near-tower area 503 to a square, that is, in In the area defined between the boundary line of the circular near-tower area 503 and its circumscribed square 601 (i.e. Figure 11 The shaded area in ), the heliostats are arranged according to the arrangement of the far tower area 502 .

[0071] In this embodiment, the distribution rules between each near-tower partition and the far-tower partition and the specific arrangement rules of mirror rows and heliostats in each near-tower partition and far-tower partition are basically the same as those in Embodiment 1.

[0072] It should be noted that the distribution of heliostats in the near-tower area and the far-tower area of ​​the present invention is not limited to the methods of the above-mentioned emb...

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Abstract

The invention discloses a heliostat mirror field used for a tower solar thermal power plant. The heliostat mirror field comprises a near-tower area and a far-tower area. The density of heliostats in the near-tower area is larger than that of heliostats in the far-tower area. The near-tower area comprises at least one near-tower subarea. The far-tower area comprises at least one far-tower subarea. The arrangement mode of the heliostats in each near-tower subarea is any one of the linear fixed mirror line space staggered arrangement mode, the linear fixed mirror line space non-staggered arrangement mode and the annular variable mirror line space non-staggered arrangement mode. The arrangement mode of the heliostats in each far-tower subarea is any one of the linear variable mirror line space staggered arrangement mode and the annular variable mirror line space staggered arrangement mode. Compared with the prior art, when the scale of a power station is large, the reflection efficiency of a solar mirror field is effectively improved, the arrangement rules are simple and clear, and construction and maintenance are easy.

Description

technical field [0001] The invention belongs to the field of solar thermal power generation, in particular to a heliostat mirror field used in a tower type solar thermal power plant. Background technique [0002] The tower solar thermal power generation system is a solar mirror field composed of a series of heliostats with the function of automatically tracking the sun's trajectory, which concentrates and reflects sunlight to a heat absorber installed at a certain height, and heats the heat flowing through the heat absorber. The working fluid converts light energy into heat energy, thereby directly or indirectly generating high-temperature steam to drive a steam turbine to generate electricity. [0003] In the solar mirror field, the layout of heliostats directly affects the photoelectric efficiency of the tower solar thermal power generation system. At the same time, the total investment cost of the heliostat accounts for 40%-50% of the total investment cost of the power s...

Claims

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Application Information

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IPC IPC(8): F24J2/10F03G6/06F24S23/70
CPCF03G6/06F24S23/70Y02E10/46
Inventor 徐能李建华宋亦凡宓霄凌刘志娟李晓波
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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