Method for calculating solar heat gain coefficient of photochromic glass

Abstract

The invention relates to a method for calculating a solar heat gain coefficient of photochromic glass, which comprises the following steps of: testing a darkening process and a revision process of the photochromic glass to obtain a transmittance-time curve of the darkening process of a photochromic glass sample and a transmittance-time curve of the revision process of the photochromic glass sample; obtaining sunlight range spectrums at the darkening end moment and the revision end moment through testing, calculating the solar heat gain coefficients at the darkening end moment and the revision end moment according to the sunlight transmittance and the sunlight reflectance,. The method is simple and practical. The solar heat gain coefficient can be well applied to evaluation of the energy consumption performance of the photochromic glass in actual buildings, and engineering application and popularization of the photochromic glass are facilitated.

Description

Technical field [0001] The present invention relates to a method of calculating photoelectric discoloration glass solar energy-sensitive coefficients, and more particularly to a calculation process and method of a photointed glass solar energy to be used for energy consumption calculation. Background technique [0002] Photochromic glasses, referred to as photoelectric glass, that is, after light irradiation, coloring, after the light stops, it can restore it to the original state for a period of time. Since the light transmittance can vary with the change in radiation light intensity, it can control the sun entry, so that the chamber has always had a preferred brightness and temperature, effectively reduces the use of air conditioners, and realizes the reduction and consumption of the building. [0003] The solar energy-sensitive coefficient is also known as the total transmission ratio of solar energy, refers to the ratio of the amount of heat and the amount of sun radiation on...

AI Technical Summary

Problems solved by technology

[0004] However, because the solar transmittance of photochromic glass changes from time to time under the action of light, there is currently no method to calculate the solar heat gain coefficient in the actual environment, which makes it impossible to evaluate the energy-saving performance of photochromic glass in buildings. What type of building is suitable for installing photochromic glass, it is impossible to accurately determine

This undoubtedly hinders the process of large-scale production of photochromic glass, which greatly limits the application and promotion of photochromic glass in actual buildings.

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