Method and equipment for testing shading performance of coated glass, filmed glass or film-coating glass

Abstract

The invention relates to a method and equipment for testing the shading performance of coated glass, filmed glass or film-coating glass. The equipment for testing the shading performance comprises a base, a weigh box, a light source system, a fan and a signal acquisition device. A xenon long-arc lamp of which the spectrum most approaches to the solar spectrum serves as a light source, and radiation intensity can be regulated; a variable-frequency axial flow fan is utilized to simulate natural wind speed; data, such as the temperature and the heat flux density of the inner surface plate of a test piece as well as the radiation intensity, air temperature and the like in the weigh box can be collected on line; and the shading performance of the coated glass, the filmed glass or the film-coating glass can be comprehensively analyzed and evaluated. According to the equipment, the service condition of the coated glass, the filmed glass or the film-coating glass can be simulated under an actual working condition, the equipment has strong operability, the obtained data are comprehensive and visual, are easily accepted by architects and provide a feasible detection scheme for evaluating the shading effect of the coated glass, the filmed glass or the film-coating glass.

Description

Technical field: [0001] The invention belongs to the field of material performance testing, and relates to the detection of the sun-shading performance of coated, film-attached or coated glass, in particular to a test for the sun-shading performance of coated, film-attached or coated glass under simulated actual working conditions by using xenon lamps, fans, metering boxes, etc. Methods and equipment. Background technique: [0002] At present, the shading performance of coated, filmed or coated glass is mainly tested by ultraviolet-visible light-infrared spectrophotometer. The glass is cut into samples and placed in the optical path of the photometer, and the transmittance of different wavelength light intensities is tested. Integral, the shading coefficient of the glass is measured. This method can be used to detect the sun-shading performance of the sample under ideal conditions, but in actual use, the use environment of glass is more complicated, and it will absorb heat ...

AI Technical Summary

Problems solved by technology

This method can be used to detect the sun-shading performance of the sample under ideal conditions, but in actual use, the use environment of glass is more complicated, and it will absorb heat under sunlight for a long time and produce secondary radiation. The main method of existing photometer detection The problem is that the secondary radiation after the glass itself absorbs heat cannot be measured, and it is difficult to evaluate the impact of different climatic conditions on its sun-shading performance. It lacks intuitive detection data and is difficult to be accepted by architects.

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