天然光利用的技术要求

Technical Requirements about Application of Natural Daylight

详细讲解《全国民用建筑工程设计技术措施——电气节能专篇》“天然光的利用”一节的相关规定,包括:天然光的利用要求;对日光有较高要求的场所宜采用主动式导光系统,一般场所采用被动式导光系统;天然光导光、反光系统只能用于普通照明,不可用于应急照明;应避免将采光部分布置于阴影区内;不宜采用矩形、梯形、多边形断面的导光管;反射材料反射率不宜低于95%;宜减小天然光导光系统的长度和转弯次数;光导系统照度估算;当照度要求均匀且层高较高时,宜采用水平布置,一般情况应采用垂直布置;除特殊需要外,导光部件不宜采用光导纤维等。

Abstract The paper presents detaily regulations of application of natural daylight in national technical measures for design of civil construction electrical energy saving special topic, including： application requirements; active tubular skylight system is suitable to high requirements on sunlight, ordinary situation may adopt reactive one; natural daylight collecting and reflection system is only suitable to ordinary lighting, not to emergency lighting; avoding collecting daylight part set in shadow zone; collecting pipeline may not adopt rectangle-shaped, laddershaped and polygon-shaped sector; reflection ratio may not low 95%; length and swirled-times of tubular skylight system may reduce; illuminace of tubular skylight system is estimated; in common situation, vertical setting should adopt except requiring illuminace uniform and higher ceiling, in this case, horizontal setting is suitable; except special needs, optical fiber is not selected as collecting daylight part.