Calculation of Maintenance Factor and Maintained Average Illuminance

SUN Wenhua MA Jianfen（China Automobile Industry Engineering Corporation，Luoyang 471039，He’nan Province，China）

 

    Abstract Through analysis on the maintained average illuminance and maintenance factor，this paper points out the problem in value selection of the maintenance factor in the current standards and calculates the maintenance factor of several common maintenance schemes with reference to the current frequently-used light parameters to provide calculation basis for maintained average illuminance.

    Key words　Maintained average illuminance Maintenance factor Light lumen maintenance factor （LLMF） Light survival factor（LSF） Luminaire maintenance factors （LMF） Room surface maintenance factor（RSMF）

 

    摘 要 通过对维持平均照度与维护系数的分析，指出现行照明设计标准中维护系数取值存在的问题；结合目前常用光源的参数，计算出几种常见维护方案的维护系数，为维持平均照度提供计算依据。

    关键词 维持平均照度 维护系数 光源的光通维持率系数LLMF 光源的使用寿命系数LSF 灯具的维护系数LMF 房间表面维护系数RSMF

 中图分类号：TU88 文献标识码：A