Heliostat characterization using starlight

A heliostat and starlight technology, applied in the direction of using optical devices, instruments, lighting and heating equipment, etc., can solve the problems of incomplete alignment and inconsistency, and achieve the effect of eliminating the need

Inactive Publication Date: 2018-07-31
SOLARRESERVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The second defect cause is imperfect alignment of the faces
[0020] The third cause of the defect is that the overall heliostat points
[0029] However, in general, prior art systems for measuring and controlling pitch, slope error and pointing error are distinct and separate systems

Method used

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  • Heliostat characterization using starlight
  • Heliostat characterization using starlight
  • Heliostat characterization using starlight

Examples

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Embodiment Construction

[0101] The embodiments described herein are exemplary and do not represent all possible implementations of the principles taught by the invention. In particular, embodiments of the present invention are directly applicable to the field of concentrated solar power, particularly concentrated solar power including the use of heliostats to redirect sunlight to a fixed focal point where the concentrated sunlight can be converted For other forms of energy, such as heat or electricity. However, the apparatus and methods described herein can be applied and adapted by one skilled in the art for use in other applications where it is necessary to measure the optical properties of mirrors at a distance.

[0102] As shown in the figure, in figure 1 , an exemplary CSP system 1 may include an array of heliostats 3 that redirect and concentrate sunlight onto a focal area 7 of a tower 17 . Each heliostat 3 may comprise one or more mirrors 5 .

[0103] Embodiments of the invention include di...

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PUM

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Abstract

The present invention provides an improvement to existing canting, slope error, and / or pointing measurement approaches, by using one or more cameras to observe the reflections of points of light in the firmament, such as the reflections of stars and / or planets as visible within the night sky in the heliostat facets. An illustrative heliostat measurement system comprises a plurality of heliostats,and at least one camera that observes at least one heliostat. The heliostats reflect an image of the firmament that can be observed by the at least one camera. The system further comprises (i) at least one captured image of the firmament reflected from at least one of the heliostats; and (ii) a computer comprising programming that determines a heliostat imperfection from the captured image, wherein the heliostat imperfection is selected from at least one of a slope error, a canting error, and a pointing error.

Description

[0001] priority [0002] This application claims the benefit of U.S. Provisional Application No. 62 / 182,196, filed June 19, 2015, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The present invention relates to the optical alignment of heliostats used in the field of concentrated solar power (CSP) to reflect sunlight to a target in a solar power plant. More specifically, the present invention relates to the relative alignment of the faces of a multi-faceted or single-sided heliostat, the measurement of the shape of the facets, and the overall orientation of one or more heliostats. Background technique [0004] The use of heliostats in the concentrated solar field (CSP) is well established in the prior art. A typical CSP system includes at least one central tower and a plurality of heliostats corresponding to each central tower. With the tower as the focal point, the corresponding multiple heliostats are uniformly redirec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24S50/20G01B11/30
CPCY02E10/47F24S50/20F24S23/70F24S2050/25G01B11/26
Inventor 布雷登·E·海因斯
Owner SOLARRESERVE TECH
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