本文件规定了测定反射和反射的试验和计算方法 用于确定热舒适性和视觉舒适性性能等级的传动特性 EN 14501:2021中规定的外部百叶窗、内部百叶窗和百叶窗。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document defines test and calculation methods for the determination of the reflection and transmission characteristics to be used to determine the thermal and visual comfort performance classes of external blinds, internal blinds and shutters, as specified in EN 14501:2021.All current amendments available at time of purchase are included with the purchase of this document.