Occlusion-eliminating radiation energy density simulation method in tower-type solar thermal power generation system

A thermal power generation system and tower solar technology, which is applied in 3D modeling, electrical digital data processing, 3D image processing, etc. Effect

Active Publication Date: 2016-10-26
ZHEJIANG UNIV
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Huang W, et al.(2014)(Huang W, Xu Q. Development of an analytical method and its quick algorithm to calculate the solar energy collected by a heliostat field in a year[J].Energy Conversion and Management,2014,83:110 -118.) It is proposed to simulate the entire mirror field by serial accumulation on the CPU, but it can only give an estimate of the total energy value, and cannot give the distribution of radiant energy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Occlusion-eliminating radiation energy density simulation method in tower-type solar thermal power generation system
  • Occlusion-eliminating radiation energy density simulation method in tower-type solar thermal power generation system
  • Occlusion-eliminating radiation energy density simulation method in tower-type solar thermal power generation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] In this embodiment, the left-handed global coordinate system is adopted, and the Y axis is upward.

[0085] Such as figure 1 As shown, the method for simulating the radiant energy density without shading in the tower solar thermal power generation system of this embodiment includes the following steps:

[0086] (1) Establish a large axis-parallel bounding box for the entire heliostat field. Each heliostat 1 establishes a small axis-parallel bounding box 2. The side length of the small bounding box 2 is equal to the long side of the heliostat 1, the center Is the center of heliostat 1, so that the small bounding box 2 can permanently enclose heliostat 1, such as figure 2 Shown.

[0087] (2) Divide the large bounding box equidistantly along the distribution direction of the heliostats to produce a uniform grid 3. Multiple heliostats are marked with H1, H2, ... Hx, such as Figure 3~5 Shown

[0088] Specifically, this large bounding box is equally spaced along the XZ direction of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an occlusion-eliminating radiation energy density simulation method in a tower-type solar thermal power generation system. The method comprises the following steps: (1) an axially-parallel large bounding box for an overall heliostat field is built; (2) the large bounding box is equidistantly divided along a heliostat distribution direction; (3) light poles reflected and incident by the heliostats are modeled; (4) as for each light pole, an intersected grid intersected with the light pole is found out; (5) intersection determination is carried out on the heliostats in the intersected grid and the corresponding light poles; (6) shadow is converted into occlusion; (7) a corresponding relationship between a receiving panel and streamline drawing cache is built; (8) the heliostats and the occlusion thereof are projected on the receiving panel; (9) a sequence of heliostats in the streamline and the occlusion heliostats is organized and depth valuation is carried out; and (10) an occlusion area with reflection light spots is eliminated and is parallelly accumulated to cumulative cache. The quick simulation method of the invention can effectively improve the calculation accuracy and the efficiency, and the simulation result is more authentic and reliable.

Description

Technical field [0001] The invention relates to the technical field of solar thermal power generation simulation technology, in particular to a method for simulating the radiation energy density of a tower-type solar thermal power generation system that effectively eliminates obstruction. Background technique [0002] The real-time prediction and simulation of the radiant energy density distribution on the receiver of the tower solar thermal power generation system are of great significance to the tower solar thermal power generation project. [0003] To achieve high-precision simulation, it is necessary to consider the two phenomena that often affect the power generation efficiency in the heliostat field: shadow and occlusion. In order to improve power generation efficiency, these two phenomena must be avoided as much as possible. However, for a large heliostat field, it is necessary to determine the shadow and occlusion relationship between heliostats, which requires a huge amou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/10G06T15/40G06T15/50G06T3/00G06T1/20G06T1/60G06F17/50
CPCG06F30/20G06T1/20G06T1/60G06T3/0006G06T15/405G06T15/503G06T17/10
Inventor 赵豫红冯结青何才透
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap