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Obtaining method of interception factor of trough parabolic concentrator based on image processing

A parabolic concentrator and trough paraboloid technology, applied in the field of solar energy applications, can solve problems such as labor consumption and low efficiency, and achieve the effect of improving work efficiency and saving labor costs

Inactive Publication Date: 2019-05-21
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is undoubtedly very labor-intensive and inefficient.

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  • Obtaining method of interception factor of trough parabolic concentrator based on image processing
  • Obtaining method of interception factor of trough parabolic concentrator based on image processing
  • Obtaining method of interception factor of trough parabolic concentrator based on image processing

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Embodiment Construction

[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0031] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0032] figure 1 Shown is a schematic diagram of the structure of a trough parabolic concentrator. Its structure is very simple. The paraboloid 1 reflects and gathers sunlight into the heat collecting tube 2, thereby converting solar energy into heat energy. In practical application, the paraboloid 1 is not a complete and continuous mirror, but a plurality of square plane mirrors attached to the paraboloid. figure 2 It is a plan view of paraboloid expansion, and in the present embodiment, 7 * 4 sma...

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Abstract

The invention discloses a method for obtaining the interception factor of a trough parabolic concentrator based on image processing, and relates to the technical field of solar energy application. Technical key points of the present invention: image acquisition step: erect an image acquisition device at a certain distance from the trough parabolic concentrator; control the image acquisition device to capture the front view of the trough parabolic concentrator; position data recording step: measure the image acquisition device and The relative position of the parabolic concentrator; the calculation steps for the theoretical position of the black band of the collector tube; the coordinate conversion step: converting the theoretical position of the black band on the longitudinal section of the parabola into the pixel coordinates of the corresponding reflector on the parabolic surface; the black band image processing steps; The steps for expressing the interception factor of a reflector are as follows: Calculate the light escape area of ​​the black band area of ​​the reflector based on the theoretical black band image sequence and the actual black band image sequence of a certain reflector; draw the escape area on the theoretical black band position on the reflector.

Description

technical field [0001] The invention relates to the technical field of solar energy applications, in particular to a method for obtaining the interception factor of a trough parabolic concentrator. Background technique [0002] The trough parabolic concentrator is a classic way of solar energy utilization. see figure 1 . The solar energy is reflected by the parabola and concentrated on the heat collecting tube located in front of the parabola, thereby converting the solar energy into heat energy. Ideally, people hope that the paraboloid can gather more light into the heat collecting tube, so how much sunlight can be gathered by the paraboloid into the heat collecting tube is a concern of people. This requires detection of some indicators of the concentrator, such as interception factor, focal line error, and tangent line error. [0003] In the prior art, technicians measure the paraboloid on site to know its light-gathering performance. This method is undoubtedly very l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/70G06T5/00G06T7/10
CPCG06T5/92
Inventor 刘奇黄韫栀韩路易何凌周学斌李昌聪
Owner SICHUAN UNIV
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