A method for simulating radiation energy density distribution of light spots in tower type solar thermal power generation

A technology of tower solar energy and density distribution, which is applied in the field of simulation of radiant energy density distribution to achieve the effect of improving simulation accuracy and efficiency

Active Publication Date: 2019-04-23
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Limited to the radiant energy density distribution model adopted and the z-buffering algorithm used to deal with shadows and occlusions, the radiant energy density distribution of the contour edge of the occluded area on the spot presents a sharp transition, which obviously does not match the real situation

Method used

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  • A method for simulating radiation energy density distribution of light spots in tower type solar thermal power generation
  • A method for simulating radiation energy density distribution of light spots in tower type solar thermal power generation
  • A method for simulating radiation energy density distribution of light spots in tower type solar thermal power generation

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Embodiment Construction

[0075] Such as Figure 1~6 As shown, the simulation method of the radiant energy density distribution of the spot in the tower solar thermal power generation in this embodiment is divided into three steps. First, consider the influence of shadow and occlusion, and extract the effective reflection area on the surface of the heliostat; then, deduce and establish the analytical model of the virtual radiant energy density distribution scalar field function defined in the local coordinate system of the heliostat; finally, the virtual scalar field function is obliquely projected onto the receiving plane along the reflection direction of the heliostat, thus completing the reception The distribution modeling of the radiant energy density received on the receiver, where figure 1 The coordinate systems established in the simulation method of the present invention are respectively the global coordinate system O-XYZ of the heliostat field, the local coordinate system o-xy of the heliostat...

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Abstract

The invention discloses a method for simulating radiation energy density distribution of light spots in tower type solar thermal power generation, which relates to the technical field of tower type solar thermal power generation system simulation and comprises the following steps of (1) extracting an effective reflection area on the surface of a heliostat under the condition of considering the influence of shadow and shielding; (2) deducing and establishing an analytical model of a virtual radiation energy density distribution scalar field function defined under a heliostat local coordinate system; (3) obliquely projecting the virtual radiation energy density distribution scalar field function to a receiving plane in parallel along the reflection direction of a heliostat to complete modeling of radiation energy density distribution received on a receiver. According to the method, factors such as the sunlight direction, the radiation energy distribution of the solar surface, the position, the size and the rotation of the heliostat, the micro surface of the heliostat and shadow and shielding are considered, and experiment and comparison results show that compared with an existing analysis method, the analysis model provided by the invention is higher in precision and can be quickly calculated.

Description

technical field [0001] The invention relates to the technical field of simulation of tower-type solar thermal power generation systems, in particular to a method for simulating the distribution of radiation energy density of light spots in tower-type solar thermal power generation. Background technique [0002] Tower-type solar thermal power generation is an environmentally friendly and sustainable emerging technology to deal with the energy crisis in the contemporary world (Romero M, Steinfeld A. Concentrating solar thermal power and thermochemical fuels [J]. Energy & Environmental Science, 2012, 5 (11): 9234 -9245.). In this type of system, the maneuvering strategy, especially when the system is unstable, requires extensive real-time radiant energy simulations. In addition to the consideration of power generation efficiency, the distribution of radiant energy density on the surface of the receiver is related to the safe operation of the system (Roldán M I, Monterreal R. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 赵豫红冯结青何才透
Owner ZHEJIANG UNIV
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