教室光环境统一眩光值影响因素的研究

Research on Influencing Factors of UGR in Classroom Light Environment

研究了标准教室场景中统一眩光值(UGR)的干扰因素,通过DIALux改变输入条件,如灯具的安装位置、反射比、光通量、配光曲线等,同时设置不同的UGR测点位置,经模拟优化,发现UGR并非单一与灯具参数,比如配光曲线、光通量等有关,还与安装的环境参数有关。上照光通量由0增加至与下照光通量相等时,UGR下降19.7%;按照国标限值改变环境反射系数,UGR下降24.1%。

This paper focuses on the interference factors of the Unified Glare Rating(UGR) in the standard classroom scene. For example, the installation position, reflectance, luminous flux and light distribution curve of luminaire, and different UGR measuring points were set at the same time. Through DIALux simulation and optimization, it is found that UGR is not only related to lamp parameters, such as light distribution curve and luminous flux, but also related to installation environment parameters. The UGR decreased by 19.7% when the upward luminous flux increased from 0 to be equal to the downward luminous flux, and by 24.1% when the environmental reflection coefficient was changed according to the national standard.