摘要
灯具利用系数是隧道照明设计、参数优化中计算路面水平照度的一个重要参数,提高灯具利用系数有利于提高路面的平均照度。但目前使用该参数时,多数采用灯具利用系数曲线或设为定值,造成计算误差。为了得到能根据灯具配光数据和布灯参数变化的利用系数,建立了隧道照明灯具利用系数计算模型,并依据此模型,分析了利用系数与布灯高度、布灯横向偏移距离及布灯仰角的变化规律。仿真算例表明,所建利用系数模型正确,用于布灯参数优化时,比利用系数取定值时的结果更准确,照明系统也更节能。此模型适用于中央布灯、拱顶侧偏布灯、交错布灯和对称布灯形式灯具利用系数的计算。
Utilization factor（UF） of luminaire is an important parameter in calculating horizontal illuminance of tunnel road surface in the process of tunnel lighting design or parameters optimization of tunnel lighting,increase of UF is conducive to the average illuminance of road surface.However,UF was usually set as a fixed value or get from UF curve of luminaire,which caused calculation errors.An UF model of tunnel lighting luminaire was made to get the real UF in accordance with light distribution data of adopted luminaire and luminaire installation parameters.Based on the model,the relationships between UF and luminaire installation height,crosswise offset distance and elevation angle were analyzed.A simulation example showed that the UF model is correct,when the UF model is applied to optimization of luminaire installation parameters,more accurate optimized parameters and more energy-saving lighting system can be gotten than that of UF set as a fixed value.The UF model is suitable for calculation of UFs of central luminaire distribution,offset-of-vault luminaire distribution,stagger luminaire distribution and symmetric luminaire distribution.
出处
《照明工程学报》
2017年第1期97-101,共5页
China Illuminating Engineering Journal
基金
国家自然科学基金项目资助(项目编号:61463015)
关键词
隧道照明
利用系数
布灯参数
tunnel lighting
utilization factor
luminaire installation parameters
