A Monte Carlo Simulation Method for Solar Radiant Energy Density with Peak Stability

A technology of solar radiation and simulation method, applied in the field of solar power generation simulation, can solve the problems of deviation of real situation, unstable peak value of simulation results, reducing the credibility of simulation results, etc., to achieve the effect of reducing RMSE

Active Publication Date: 2021-09-21
ZHEJIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since ray tracing is a discrete calculation method, the peak value of the simulation results is very unstable, and in some cases the error can reach 10%.
Unstable peaks will inevitably have a great impact on mirror field design results
[0008] 2. The root mean square error (Root Mean Square Error, RMSE) between the radiant energy distribution and the ground truth (GT for short) of the ray tracing reflection projection on the surface of the receiver is relatively large
A large RMSE will also reduce the credibility of the simulation results, so that the relevant parameters provided in research such as mirror field layout design, site parameter optimization, and focus optimization deviate from the real situation

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
  • A Monte Carlo Simulation Method for Solar Radiant Energy Density with Peak Stability
  • A Monte Carlo Simulation Method for Solar Radiant Energy Density with Peak Stability
  • A Monte Carlo Simulation Method for Solar Radiant Energy Density with Peak Stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Taking the existing two-way Monte Carlo ray tracing algorithm to simulate the radiant energy density of the receiver surface as an example, the calculation steps are as follows:

[0034] 1. According to the sun incidence model, the direction of the incident light is sampled. The light direction is determined by the elevation angle (set as θ) and the azimuth angle (set as )Sure. For example, when using the Buie sun distribution model, Obey the uniform distribution in the [0,2π] interval, and θ obeys the Buie distribution model, as shown in formula 1 and formula 2 respectively:

[0035]

[0036]

[0037] The calculation method of κ and γ is shown in formula 3,

[0038]

[0039] Among them, χ represents the CSR parameter that controls the distribution of Buie's solar light distribution model when the light is greater than the solar opening angle (4.65mrad).

[0040] 2. Sample the intersection of the incident light with the heliostat surface. A point is rand...

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 a Monte Carlo solar radiant energy density simulation method with stable peak value, comprising the following steps: (1) sampling the direction of the incident light according to the sun incident light model; (2) comparing the incident light and the surface of the heliostat (3) Conduct shading tests on the incident light to obtain the initial simulation results of the energy density distribution on the receiver surface; (4) Filter and calculate the initial simulation results of the energy density distribution on the receiver surface to obtain the Monte Carlo sun Radiant energy density simulation results. The Monte Carlo solar radiant energy density simulation method with stable peak value of the present invention adds one-step post-processing to the result of ray tracing algorithm simulation calculation: filter calculation, under the premise of ensuring that the total energy accepted by the receiver surface remains unchanged, the peak value and The true value is closer and more stable, while reducing the RMSE. The stable peak value and the distribution closer to GT provide a reliable guarantee for subsequent related algorithm research and simulation.

Description

technical field [0001] The invention relates to the technical field of solar power generation simulation, in particular to a Monte Carlo simulation method for peak-stable solar radiation energy density. Background technique [0002] With the shortage of fossil energy resources and the increasingly serious environmental problems in recent years, clean and renewable energy has attracted widespread attention from academia and industry circles. Solar energy is a common renewable resource. As the main source and provider of the earth, solar energy is naturally safe, clean, easy to obtain, renewable and abundant in reserves. If there is a technology that can fully convert solar energy into other energy needed by human beings, then theoretically solar energy can meet the world's energy needs. Despite the huge utility value of solar energy, the contribution of solar energy to global energy supply is still negligible at this stage. [0003] Solar thermal power generation technolog...

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 Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 赵豫红冯结青段晓悦何才透
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