CN-121999928-A - Construction method, prediction method and system of cooling coating property prediction model

CN121999928ACN 121999928 ACN121999928 ACN 121999928ACN-121999928-A

Abstract

The application provides a construction method, a prediction method and a prediction system of a cooling coating property prediction model, which are suitable for the technical field of cooling coating optical property prediction, wherein the construction method of the prediction model comprises the steps of correcting absorption efficiency factors and scattering efficiency factors of scattering particles in a cooling coating to obtain dependent absorption efficiency factors and dependent scattering efficiency factors of the scattering particles, constructing a radiation transfer equation of dependent scattering, constructing a double-pass model related to forward and backward radiation intensity based on semi-isotropic intensity of the cooling coating, obtaining a forward and backward radiation energy calculation formula according to the double-pass model, determining unknown coefficients in the radiation energy calculation formula based on boundary conditions, constructing the cooling coating property prediction model, and having the beneficial effects of accurately reflecting actual physical processes under high concentration conditions and remarkably improving calculation accuracy of cooling coating properties.

Inventors

XIAO PENG
ZHU MENGZHOU
CHEN DABING
WANG ZHEN
CHEN JIE
CHEN ZHEN
JIA JUN
Zou Zhaoxiao
You Zijing
ZHAO XIAODONG
YANG LIHENG
TAO JIAGUI

Assignees

国网江苏省电力有限公司电力科学研究院
东南大学
江苏省电力试验研究院有限公司
国网江苏省电力有限公司

Dates

Publication Date: 20260508
Application Date: 20260122

Claims (12)

1. The construction method of the cooling coating property prediction model is characterized by comprising the following steps: correcting the absorption efficiency factor and the scattering efficiency factor of the scattering particles in the cooling coating to obtain the dependent absorption efficiency factor and the dependent scattering efficiency factor of the scattering particles; constructing a radiation transfer equation of dependent scattering based on the dependent absorption efficiency factor and the dependent scattering efficiency factor; based on the semi-isotropic intensity of the cooling coating, constructing a double-flux model about forward and backward radiation intensity according to a radiation transfer equation of dependent scattering; Obtaining forward and backward radiation energy calculation formulas according to the dual-flux model; Determining unknown coefficients in the forward and reverse radiant energy calculation formulas based on the boundary conditions; And constructing a cooling coating property prediction model through a forward and reverse radiation energy calculation formula.
2. The method for constructing a cooling coating property prediction model according to claim 1, wherein the method is characterized in that the absorption efficiency factor and the scattering efficiency factor of the scattering particles in the cooling coating are corrected to obtain the dependent absorption efficiency factor and the dependent scattering efficiency factor of the scattering particles, and specifically comprises the following steps: absorption efficiency factor correction formula for scattering particles in cooling coating according to absorption efficiency factor Correcting to obtain the non-independent absorption efficiency factor of the scattering particles ; The absorption efficiency factor correction formula is: ; in the formula, , The dimensional parameters are represented by a number of dimensions, Indicating the diameter of the scattering particles, Indicating the wavelength of the incident light, Representing the near field correction factor, , Representing the surface emissivity of the scattering particles; correction of scattering efficiency factor for scattering particles in a cooling coating according to the scattering efficiency factor correction formula Correcting to obtain the dependent scattering efficiency factor of the scattering particles ; The scattering efficiency factor correction formula is: ; in the formula, , , The solid angle is represented by the angle of the solid, Indicating the scattering angle, which is the angle between the direction of incidence and the direction of scattering, Representing scattered light amplitude and phase dependence A scatter amplitude function of the varying relationship, The form factor is represented by a factor of the shape, , , Representing the volume fraction of the scattering particles, R represents the dimensionless radial distance, R represents the linear distance from the center scattering particle centroid to a certain point in space, The ratio of the number of particles at a distance R from the center scattering particle centroid to the average number density of the temperature-reducing coating per unit volume is shown.
3. The method for constructing a predictive model of a properties of a cooling coating according to claim 2, wherein the non-independently scattered radiation transfer equation is: ; in the formula, Indicating the direction of propagation of the radiation, Indicating that the thickness of the cooling coating is At and along the radiation propagation direction Is used for the radiation intensity of the (c) radiation, 、 Respectively indicating the direction of propagation of the scattered particles along the radiation A dependent scattering coefficient, a dependent absorption coefficient, , , Indicating the direction of propagation of the radiation Is scattered in a certain direction Is a function of the probability of (1), As a function of the phase of the scattering, Indicating a certain incident direction Is scattered into the direction of radiation propagation Is a probability of (2).
4. The method for constructing a predictive model of a property of a cooling coating according to claim 3, wherein the constructed dual-flux model for forward and reverse radiation intensities is: in the formula, Is shown in The sum of all radiant energies propagating in the forward direction at the location, Is shown in The sum of all radiant energy propagating in the opposite direction at the location, 、 Respectively represents the dependent effective scattering coefficient and the dependent effective absorption coefficient of scattering particles in the cooling coating, , , , Representing the probability of photons scattered into the opposite hemisphere during a single scattering time.
5. The method for constructing a predictive model of a properties of a cooling coating according to claim 4, wherein the obtaining the forward and reverse radiant energy calculation formulas according to the dual-flux model comprises: Obtaining a normal differential equation set comprising a forward normal differential equation and a reverse normal differential equation through a double-flux model; the normal differential equation is: ; The inverse ordinary differential equation is: ; Solving the ordinary differential equation set to obtain a forward radiation energy calculation formula and a reverse radiation energy calculation formula; The forward radiant energy calculation formula is: ; the inverse radiant energy calculation formula is: ; in the formula, As a result of the unknown coefficient, 。
6. The method of claim 5, wherein the unknown coefficients in the forward and reverse radiant energy calculation formulas are: ; ; ; ; in the formula, Indicating the thickness of the cooling coating.
7. The method for constructing a predictive model of a property of a temperature-reducing coating according to claim 6, wherein the property of the temperature-reducing coating comprises transmittance And reflectivity (R) The cooling coating property prediction model is constructed as follows: ; ; in the formula, 。
8. A system for constructing a cooling coating property prediction model is characterized by comprising a module for realizing the method for constructing the cooling coating property prediction model according to any one of claims 1-7.
9. A method for predicting properties of a cooling coating, comprising: the parameters of the cooling coating are obtained, including the thickness of the cooling coating Volume fraction of scattering particles Diameter of scattering particles ; The property parameters of scattered ions, the parameters of the cooling coating and the wavelength of incident light in the radiation refrigeration coating Inputting a property prediction model, wherein the property prediction model is constructed by the construction method of the cooling coating property prediction model according to claim 7; calculating through a property prediction model to obtain the transmittance of the cooling coating And reflectivity (R) 。
10. A temperature-reducing coating property prediction system comprising a module that implements the temperature-reducing coating property prediction method of claim 9.
11. An electronic device, comprising: A memory; processor, and A computer program; Wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of constructing a predictive model of a properties of a cooling coating according to any one of claims 1 to 7 and/or to implement the predictive method of properties of a cooling coating according to claim 8.
12. A computer-readable storage medium, having stored thereon a computer program, the computer program being executable by a processor to implement the method of constructing a model for predicting properties of a cooling coating according to any one of claims 1 to 7, and/or to implement the method of predicting properties of a cooling coating according to claim 8.

Description

Construction method, prediction method and system of cooling coating property prediction model Technical Field The application relates to the technical field of prediction of optical properties of cooling coatings, in particular to a construction method, a prediction method and a prediction system of a cooling coating property prediction model. Background The radiation refrigeration coating is a novel material with revolutionary cooling capability, and has great application potential in the aspects of energy conservation, emission reduction and global warming response. In the development process of the radiation refrigeration coating, the optical property of the cooling coating prepared by the radiation refrigeration coating needs to be predicted so as to determine the effect of the radiation refrigeration coating, and the coating is convenient to adjust according to the predicted optical property so as to meet the use requirement. At present, the optical property research of the cooling coating is generally based on an independent scattering prediction model constructed by an independent scattering theory, and the theory assumes that no electromagnetic interaction exists among scattering particles in the cooling coating prepared from the radiation refrigeration coating, and scattered waves are incoherent, so that the optical property of the cooling coating is simplified into linear superposition of individual properties of all the scattering particles. Although the method has simple model and convenient calculation, the inherent limitation is that the real physical process in the high-concentration coating and the scattering particle close-packed cooling coating cannot be accurately described. In the cooling coating made of the high-concentration coating, the reduction of the inter-particle distance can cause obvious non-independent scattering effect, electromagnetic coupling effect exists among particles, and the existing independent scattering prediction model can continuously overestimate the light attenuation capacity of the cooling coating along with the increase of the concentration of scattering particles, so that the prediction result deviates from an actual value. Disclosure of Invention In order to solve one of the technical defects, the application provides a construction method, a prediction method and a prediction system of a cooling coating property prediction model. According to a first aspect of the present application, there is provided a method for constructing a predictive model of properties of a cooling coating, comprising: correcting the absorption efficiency factor and the scattering efficiency factor of the scattering particles in the cooling coating to obtain the dependent absorption efficiency factor and the dependent scattering efficiency factor of the scattering particles; constructing a radiation transfer equation of dependent scattering based on the dependent absorption efficiency factor and the dependent scattering efficiency factor; based on the semi-isotropic intensity of the cooling coating, constructing a double-flux model about forward and backward radiation intensity according to a radiation transfer equation of dependent scattering; Obtaining forward and backward radiation energy calculation formulas according to the dual-flux model; Determining unknown coefficients in the forward and reverse radiant energy calculation formulas based on the boundary conditions; And constructing a cooling coating property prediction model through a forward and reverse radiation energy calculation formula. According to a second aspect of the present application, there is provided a system for constructing a model of a predictive model of a properties of a cooling coating, comprising modules implementing a method for constructing a model of a predictive model of a properties of a cooling coating as described above. According to a third aspect of the present application, there is provided a method for predicting properties of a cooling coating, comprising: the parameters of the cooling coating are obtained, including the thickness of the cooling coating Volume fraction of scattering particlesDiameter of scattering particles; The property parameters of scattered ions, the parameters of the cooling coating and the wavelength of incident light in the radiation refrigeration coatingInputting a property prediction model, wherein the property prediction model is constructed by the construction method of the cooling coating property prediction model; calculating through a property prediction model to obtain the transmittance of the cooling coating And reflectivity (R)。 According to a fourth aspect of the present application there is provided a temperature-reducing coating property prediction system comprising a module implementing a temperature-reducing coating property prediction method as described above. According to a fifth aspect of the present application, there is provided an electronic de