Heliostat field combined by small-area plane heliostat and large convergent heliostat

A technology of heliostat and small area, applied in the field of heliostat mirror field, can solve the problem that the optimal effect cannot be achieved, and achieve the effect of improving the land utilization rate, good field fault tolerance, and ensuring the condensing effect.

Active Publication Date: 2015-02-11
QINGHAI SUPCON SOLAR POWER GENERATION
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  • Abstract
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Problems solved by technology

However, this type of heliostat has high requirements and difficulties in terms of mirror surface production, mechanical process requirements, batch manufacturing, engineering installation and construction, fault tolerance, and operation and maintenance.
[0007] Due to the obvious advantages and disadvantages of the above four mainstream heliostat reflective surfaces, it is impossible to achieve the optimal effect for large-scale power station mirror fields using any one of the reflective surface forms

Method used

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  • Heliostat field combined by small-area plane heliostat and large convergent heliostat
  • Heliostat field combined by small-area plane heliostat and large convergent heliostat
  • Heliostat field combined by small-area plane heliostat and large convergent heliostat

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Embodiment Construction

[0022] The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In these drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0023] It should be noted that the figures in the embodiments of the present invention all take the northern hemisphere as an example.

[0024] see figure 1 , this embodiment provides a mirror field combining a small-area planar heliostat and a large-scale converging heliostat with adjustable focal length, including a heat absorber 101, a small-area planar heliostat 102, and a large-scale converging heliostat 103 . The a...

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Abstract

The invention discloses a heliostat field combined by a small-area plane heliostat and a large convergent heliostat, and is applied to a tower type solar thermal power generation heliostat field. The heliostat field comprises a heat absorber, the small-area plane heliostat and the large convergent heliostat, wherein the small-area plane heliostat is arranged in the area closer to the hear heat absorber, the large convergent heliostat is arranged in the area farer from the heat absorber, and the area of a reflector of the small-area plane heliostat is smaller than the area of a reflector of the large convergent heliostat. The heliostat field has the advantage that the combining method is adopted, so the fault-tolerance property is high, the construction period is shortened, the running and maintenance cost is low, and the quality of light spots can be ensured.

Description

technical field [0001] The invention relates to the field of tower-type solar thermal power generation, in particular to a heliostat mirror field in a solar thermal power generation system. Background technique [0002] The solar thermal power generation system uses heliostats to reflect sunlight to the receiver, and then converts solar radiation energy into heat energy output by the receiver through the heat-absorbing working medium in the receiver, such as water, air, liquid metal or molten salt, etc. Finally, high-temperature and high-pressure gas is generated to drive steam turbines or gas turbines to generate electricity. In the solar thermal power generation system, the heliostat, as the basic concentrating unit, is the basic equipment for energy collection and conversion of the entire system, and its investment cost accounts for about 50% of the total capital. Therefore, what form of heliostat should be used for the mirror field? appears to be particularly important....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/10F24J2/16F24S23/70F24S23/77
CPCY02E10/40
Inventor 李江烨李心刘琨王薇黄文君项翀
Owner QINGHAI SUPCON SOLAR POWER GENERATION
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